Web application development
Customer portals, dashboards, marketplaces and internal tools, written in TypeScript with React and Next.js on Node.js and NestJS back ends. One codebase your next team can read.
Custom Software Development Services
4.6 on Clutch · 15 verified client reviews
IvorySoft is a custom software development company: we design and build web applications, native iOS and Android apps, React Native cross-platform products and AI features for startups and small and mid-sized businesses. The six stages below are how every engagement runs, from the first call through business analysis, UI/UX design, development and quality control, with the people responsible for each stage named beside it. Pick a stage to see what you get at the end of it.
AI services, human-guided
LLM features, AI agents and retrieval over your own data, added to the product you already run — without a rewrite.
How we work with AI
- AI-assisted build — senior engineers review every merge.
- Standard providers — no proprietary wrapper in between.
- You own everything — code, prompts and provider accounts stay yours.
Discovery Phase
- Why do you need it?Most products that fail were built for nobody, or from a feature list nobody had tested on a real user. Discovery is the one to two weeks that stop that: we take your one business problem, not the feature list, and turn it into a product that can be estimated, scheduled and built, with the risks written down before anyone writes code. Our product discovery services cost a fixed $2,700, credited toward the build. You leave with a plan you own either way: what version one contains, what comes after launch, what it costs and when it ships.
- Our processDiscovery is the first step of our software development process. Three people work with you: a project manager who does the analysis, a tech lead and a designer, in three to five meetings over one to two weeks, with the rest settled asynchronously. You get the requirements document with the version one and version two scope, an estimate with a minimum and a maximum per epic, the release plan, the list of risks and open questions, wireframes of the key screens in Figma, and the task structure in Jira the team builds from.
What the Discovery phase includes
1. Idea analysis
You bring the problem; we work out what the product has to do about it. Together we write the software requirements specification: the user roles, the main scenario from the first screen to the last, the features version one needs and the ones it does not. We ask early about the payment model and the launch geography, because those two decisions shape the architecture more than any screen. Every requirement gets a priority, so when something has to give later, nobody argues about what.2. Market research
We look at who already solves this problem for your users: direct competitors, the workaround people use today, and the apps your users will compare you with. The result is a list of what your product must match, what it can skip, and the one thing it has to do better.3. Moodboard
Before any screen is designed, we agree on how the product should feel: colours, typography, tone and a few reference apps your users already trust. The moodboard is a one-page agreement the designer works from, and it saves the rounds of "not quite what I imagined" that cost real design hours.4. Technology and development tools
We pick the stack for the product you are building, not the one we like most: web, native iOS and Android or a cross-platform app, the database, the hosting region, the third-party services for maps, payments, messaging or AI. Each choice is written down with its reason, and the accounts for hosting, the stores and third-party services are registered to your company from day one.
Business Analysis
- Why do you need it?A clear requirement is cheaper than a clever fix. Our business analysis services turn what you know about your business into requirements the team can estimate and test, and catch the gaps while they are still a sentence in a document rather than a feature in production. Projects stretch on undocumented integrations, decisions waiting on several people and scope added mid-release; this is where we find those risks early.
What business analysis covers
Working out requirements
We interview you and, where possible, the people who will use the product every day, in one or two requirements workshops. What they do today, where it breaks and what a good day looks like become the requirements; the technical details follow from them.Requirements planning and management
Every requirement gets an ID, a priority and an owner. Must items block the release; Should items can move to the next version without a meeting. Changes go through a change request with its estimate, approved in writing, instead of silent scope growth.Requirements review and documentation
Requirements are written so a tester can check them: the screen, the action, the expected result. Business rules such as pricing, statuses and permissions live in their own appendix, because they change more often than the screens do.Sharing of requirements
You get the whole document in one place, with the open questions listed by deadline, and we present the estimate and the plan to you on a call. Nothing goes into the build until you have approved it.Product development and validation
Business analysis does not end at kick-off, because business rules change more often than screens. On a recent taxi app, discovery agreed on one city and payment by bank transfer; during development the client extended the service to the whole district and moved to card payments through a bank. Nothing was cut: both became change requests with their estimates, and the release moved by about a month. The analyst keeps the document current, so the specification you receive at the end describes the product you actually have.
UI/UX Design
- Why UI/UX design mattersPeople judge an app in the first minute and do not come back to explain why they left. Our UI/UX design services start from your users' tasks and the real conditions they use the app in, and end with an interface people understand without a tutorial. A flow fixed in Figma costs minutes; the same flow fixed in code costs days.
- Our processWireframes of the key screens come first, in Figma, so you can agree on the flows and the engineers can start from them. The full design of every screen follows. There is no fixed number of revision rounds: we change what needs changing, including during the build when we see a screen can work better. Where the flow is risky, you get a clickable prototype to test with real users first.
Our main approaches to UI/UX design:
1. Identifying the strategy
We start from what the product has to achieve for the business and for the person holding the phone: the one job the first screen must do, the one action that counts as success. Every design decision later is checked against that, not against taste.2. Conducting research
We study the competitors and the apps your users already know, so the familiar patterns stay familiar. Where the product does something new, we test the flow on real people with a prototype and change it before development starts.3. Leaning on deep analysis
Research is only useful if it changes something. After the interviews and tests we go back to the original problem, check whether we understood it correctly, and correct the design brief before the screens are drawn.4. Outlining an idea
From the moodboard and the research the designer draws wireframes for the key screens: the screens, their order and what sits on each. Where the choice matters you see two or three directions, and we agree on one before the full design starts.5. Designing the prototype
The approved wireframes become a clickable prototype in Figma with the real flows and the real content, so you can walk through the product as a user would. We refine it with your feedback, and the engineers build from it.6. Implementing the product
The engineers receive the full design with a UI kit, the colours, typography and spacing as tokens, and every state of every screen. The Figma file belongs to you, and the designer stays on the project to answer questions and review the built screens.
Web Development
- Why build your web application with IvorySoftA web application is where your customers or your team get work done, so it has to fit the job and the people doing it. Our custom web application development starts from your industry's rules and your users' habits, and ends with a product that serves a business goal from the first release.
- Our processOur engineers build web applications for startups and small and mid-sized businesses: customer-facing products, internal tools that replace spreadsheets, and the web panels behind mobile apps. Every two weeks you see the working product at a demo and pay for the sprint you have just seen; the team named after discovery stays with the project.
How we build a web application, step by step
1. Consultancy on efficient MVP product development
If you are starting a product, we help you define what the first release must prove and what it can skip. The usual cuts are admin panels before there is data to manage, social features copied from other apps, and custom design everywhere before the product is proven. That is how a first release fits in one to two months.2. Picking the right tech stack
We choose the stack that fits the product and the team that will maintain it: standard technology with no proprietary layer in between, so another team can pick the code up at any time. Each choice is recorded with its reason.3. Prototyping
Before the full build we model the main flows in Figma and, where the flow is risky, as a clickable prototype you can test with users. Changing a flow here costs minutes; changing it in production costs days.4. Web Engineering
The team builds the application feature by feature in two-week sprints. You get a short update on the work done every working day, the project manager stays in touch about what comes next, and each sprint ends with a demo of the working product.5. CI/CD
Every merge runs the automated checks and deploys to staging on its own; production is deployed by a person after your approval, with a rollback that takes minutes. That keeps new features fast and predictable after launch.6. Code Quality Assurance
Senior engineers review every merge, including the code our AI tools helped write. Manual testing follows written test cases, automated tests cover the logic that costs money when it breaks, such as payments and the API, and a regression run precedes every release.7. Further maintenance
The first two weeks after launch are a warranty period: we watch crashes and errors, fix what breaks and ship hotfixes. After that the same team stays on call by agreement and is paid for the hours it actually works, with no retainer, because the first things to break later are usually a growing hosting bill, a third-party API that changed, and libraries that need security updates.
Mobile Development
- Why build your mobile app with IvorySoftWe build native iOS and Android apps and React Native cross-platform apps for startups and small and mid-sized businesses. Our iOS app development services and Android work start from how your users actually move through the app, on the devices and connections they really have.
- Our processFrom the first prototype to the store release and the updates after it, you work with one team. Our Android app development services and iOS work run in two-week sprints with a demo at the end of each, a short update every working day, and store accounts registered to your company, with our help on the paperwork, including the D-U-N-S number Apple asks for.
How we build a mobile app, step by step
1. Consultancy on efficient MVP product development
A mobile first release has to prove one thing with real users. We help you choose that thing, decide whether it needs iOS and Android at once, and leave the rest for version two. Discovery ends with an estimate per epic and a release date the team can keep.2. Picking the right tech stack
Native Swift and Kotlin, or React Native: our cross platform app development services are the right call when one team should ship both platforms from one codebase, and native is right when the app leans on the camera, background location or heavy animation. We write the decision down with its reason.3. App Engineering
The engineers build the app feature by feature in two-week sprints. You get a short update on the work done every working day and see the app itself at the demo that closes each sprint; the sprint counts as accepted when you have given your feedback and paid for it.4. CI/CD
Every merge runs the automated checks; before the store release the app goes out through TestFlight and the Google Play testing tracks, and we publish from your accounts with the access you grant. New versions reach the stores on a predictable rhythm instead of in a rush before a deadline.5. Code Quality Assurance
Senior engineers review every merge. Manual testing follows written test cases, automated tests cover the critical logic such as payments and the API, and the app is tested on real phones: two or three iPhones of different generations and three or four Android phones from different makers and OS versions, budget models included.6. Further maintenance
The first two weeks after the release are a warranty period: we watch crashes and errors and ship hotfixes when needed. After that you choose support or version two. OS updates, store policy changes and deprecated third-party SDKs are the usual reasons a mobile app needs attention later, and someone has to be watching for them.
Quality Control
- Why do you need it?Testing is how we know the product does what the requirements say before your users find out otherwise. Our QA testing services check every feature against its written requirement and every release against a regression run, and the acceptance protocol you sign at the end lists what was tested and what passed.
At IvorySoft, the QC team performs both functional and non-functional testing:
Functional
- Regression testing
- System testing
- Integration testing
- Release Testing
Non-functional
- GUI Testing
- Usability Testing
- Localization testing
The process:
Based on a classic Agile Software Testing Life Cycle, we do the following:
1. Requirement examination
Testing starts with the requirements document, not with the finished build. Each requirement is read from a tester's point of view: can it be checked, what is the expected result, which business rule does it depend on. Requirements that cannot be tested are rewritten first.2. Test planning
We decide what is tested by hand from test cases, what is automated, and on which devices and browsers, and we put the hours into the estimate, so quality assurance services are part of the plan rather than a line cut when the deadline gets close.3. Design testing
Test cases are written from the requirements and traced back to them, so you can see which requirement each test covers. The checks that must pass before every release become the regression checklist.4. Test Environment Setup
Testing runs on a staging environment that mirrors production, with its own data. For mobile app testing services that means real phones, old and new, from different makers and OS versions, on the slow or dropped connections your users will actually have.5. Test procedures
Every build goes through the automated tests, then through the manual checks for that sprint's features. Defects are logged with steps to reproduce, fixed and retested; nothing is marked done until the test passes.6. Test closure
Before release we run the regression, check the speed of the key screens and the API, and check the basics of security: sign-in, token storage, data access and HTTPS. Then you run user acceptance testing against the agreed protocol: every Must requirement accepted, no critical or major defects open. Our software testing services end with that signed protocol, and it is the definition of done for the release.
Introduction call with
Our BizDev
Talk to our pros and they’ll turn your concept into a feasible project development roadmap!
- CEO
- BizDev
Business Analysis
Contact our business analyst to find out more on the process or to provide more information on your ongoing project with IvorySoft.
- BA
- UI/UX Designer
UI/UX Design
Talk to our UI/UX designer about research, wireframes and prototypes for your product.
- UI/UX Designer
Development
Contact us about web and mobile development for your product.
- CTO
- PMO
- Front-end Lead
- Back-end Lead
Quality Control
Want to know how we test software before a release? Ask our QA team about the checks your product will go through.
- PMO
- BA
At every stage
Our CEO participates in all stages of planning and turning an idea into a real product.
- CEO
What we build
Custom software development services we deliver
Six kinds of work cover almost every project we take on. Each runs through the six stages above, so you always know what happens next.
Mobile app development
Native iOS and Android apps, or one React Native codebase for both stores when the product allows it. You hear which one your product needs before you pay for two.
AI integration
LLM features, AI agents and retrieval over your own data, added to the product you already run. Nothing that works today has to change.
API development and integrations
Payment providers, CRMs, identity and third-party APIs connected with retries, idempotency and monitoring. Integrations that fail loudly, not silently.
Legacy system modernization
Old systems replaced piece by piece behind the running product, using the strangler pattern. No big-bang rewrite and no months without releases.
MVP development
A first release scoped to the one flow your users must complete, live in one to two months and hardened as real users arrive. Built to grow into version one, not to be thrown away.
Industries
Industries we build software for
Most of our projects sit in six industries. Each has its own page with the features, rules and cases that matter in that market.
Fintech
Payments, banking and KYC onboarding for startups and SMBs, with compliance designed in from day one.
Healthcare
Medical and telemedicine apps, patient portals and health platforms, built secure and compliant from the start.
Ecommerce
Custom online stores with the checkout, payments and integrations your business needs to sell more.
HR & recruiting
Custom HR systems for recruitment, onboarding and people management that fit your workflows.
Cybersecurity
Secure authentication, data protection and security features engineered into your web and mobile apps.
Messaging
In-app messengers, team communication tools and real-time chat that work fast on every device.
Engagement & cost
How an engagement works, and what custom software development costs
We do not quote a price range before we understand the product. Every project starts with a fixed-price discovery, so the first number you commit to is a small one.
- Discovery: fixed $2,700, credited toward the build
- First release in 1–2 months
- Projects from $10,000
- 80+ projects since 2018
- 011–2 weeks
Discovery
We analyse the idea, research the market, choose the technology and plan the milestones with you.
You get: a scoped plan with cost estimates and milestones. Fixed $2,700, credited toward the build.
- 021–2 months
Design and build to a first release
Business analysis, UI/UX design, development and quality control as described in the stages above, with regular progress reports along the way.
You get: a first release real users can work with.
- 03Ongoing
Time and materials after launch
Once the first release is live we keep building on time and materials: you set the priorities, we report the work done.
You get: a product that grows with what users actually do, with support packages when you need them.
Under the hood
Technologies we use
We pick well-supported technology on purpose: it is easier to hire for and cheaper to maintain. The reasoning is in how to choose a tech stack for a startup.
See the full stackTypeScript, React, Next.js, Node.js, NestJS, iOS, Android, React Native, OpenAI, Anthropic
- Front end
- TypeScript, React and Next.js for web apps, dashboards and customer portals.
- Back end
- Node.js with NestJS, or Next.js API routes when they are enough; REST APIs and webhooks for integrations.
- Mobile
- Native iOS and Android, or React Native for one codebase across both stores.
- AI
- OpenAI and Anthropic models behind one provider abstraction, retrieval over your own data, agents with human approval steps.
- Cloud and delivery
- AWS and Google Cloud, Docker and CI/CD pipelines.
If your product runs on something else, ask us: the stack follows the product, not the other way round.
Proof
Selected work
Three of the products behind our 80+ projects, each with a result from its case study.
Truevo — mobile and web business banking for SMEs
A business management and payments app for small and mid-sized companies, on mobile and web. Over 150 currencies, POS payments and the full set of payment options: widgets, a hosted payment page, plugins and a direct API.
PowerWatts — indoor cycling training app
A training app that logs every second of a ride, with training plans and synchronized video coaching from an expert. Used to coach Chris Froome, Dan Martin and Michael Woods in real time.
Caidr — symptom checker app for iOS and Android
A React Native healthcare app with a guided decision-tree assessment, saved history and nearby doctors and pharmacies. It turns “what is wrong with me?” into a clear next step.
Client reviews
What clients say about working with IvorySoft
Verified Clutch reviews across our web, mobile and custom software work.
5.0
“I have worked with many development firms in the past, and IvorySoft is the best by far.”
Alex StoykovCEO, Olifant Digital
5.0
“Ivorysoft excelled at keeping us up to date on their availability and expected completion.”
Wes JohnsonEngineering Lead, MasterHealth
4.5
“Their mockups results are very promising so we engaged with IvorySoft full-time.”
Mark TosquesPartner & Head Coach, PowerWatts
5.0
“The desire to do the work as professionally as they could was great.”
Sagiv Danielfounder & CTO, GoHeja LTD
FAQ
Custom software development services: frequently asked questions
How much does custom software development cost?
It depends on scope, so we price it in two steps rather than quoting a range before we understand your product. Every project starts with a fixed-price discovery phase: $2,700, credited toward the build if we continue. Discovery ends with a scoped plan, cost estimates and milestones. The build then runs on time and materials, so you pay for the work actually done and see it in regular progress reports. Our minimum project size is $10,000. Whether to build at all is a fair question too: custom software vs off-the-shelf tools compares the total cost of ownership.
How long does it take to build custom software?
Discovery takes one to two weeks. A first release that real users can work with usually follows in one to two months. Larger products grow from there in further releases rather than in one long build. What stretches a timeline is almost always the same: integrations with systems nobody has documented, decisions waiting on several people, and scope added in the middle of a release. Discovery is where we surface those risks, so the date we plan is one we can keep.
What engagement models do you offer?
One model in two steps. First a fixed-price discovery, then development on time and materials. The fixed price covers the part with the most unknowns, where a fixed scope protects you. Time and materials covers the build, where you will learn from users and want to change priorities without renegotiating a contract. You see the work done in regular progress reports.
Who owns the code and the intellectual property?
You do. The code, designs and provider accounts are yours. We build on standard technology with no proprietary wrapper in between, so another team can pick the code up at any time. We sign an NDA on request, before you share the details of your product.
Where is your team, and how do you work with clients in the US and UK?
Our team works from Ukraine and Poland. Kyiv is two hours ahead of London and seven ahead of New York; Warsaw is one hour ahead of London and six ahead of New York. We reply within 24 hours, and you can start a conversation or book a call straight into the founder’s calendar.
Which technologies do you work with?
TypeScript with React and Next.js on the web, Node.js and NestJS on the back end, native iOS and Android or React Native on mobile, and OpenAI and Anthropic models for AI features. We choose well-supported technology on purpose, because it is easier to hire for and cheaper to maintain. The full reasoning is in how to choose a tech stack for your startup.
Do you build MVPs for startups?
Yes. Most of our clients are startups and small and mid-sized businesses. An MVP follows the same path as any project: discovery cuts it down to the one flow users must complete, and the first release ships in one to two months. We build it on the stack we would use for version one, so it can grow instead of being rewritten. If you are comparing agencies for the job, how to choose a custom software development company lists the questions worth asking.
Do you support the product after launch?
Yes. We offer support packages after launch: regular check-ups of the product’s health, plus fixes and updates as your users and platforms change. New features can continue on time and materials whenever you need them. To plan the budget for this phase, see what software maintenance costs after launch.
