The article
You know what the app has to do: clients log in and see their own data, staff approve what used to sit in email, and the numbers land on one screen. What you do not know yet is what it should cost, how the work runs and what you will own at the end. In October 2026 I opened the four company pages that came up on Google for "web app development company" to see how they answer that.
One publishes figures, starting at $30,000 for a focused internal tool or MVP. One sends you to a cost calculator. Two name no price at all, and only one says in writing that the source code goes to the client when the project ends. Four pages prove nothing about a whole market, but they show which answers you may have to dig for.
I have worked in software development for 18 years. 26 Lines of Code, the company I founded in 2017, now has 70+ specialists and 150+ delivered projects across healthcare, fintech, logistics and e-commerce. Below are our answers to the same questions, and the monthly costs that a quote from any web app development agency, ours included, should name next to the build.
The short version
| Question | Our answer |
|---|---|
| What we build | Customer portals, SaaS products and dashboards, marketplaces and internal tools |
| Price | A first version from $5,000; a larger scope gets its own estimate, free, before any work |
| How the work runs | Two-week sprints, and a demo of the working app at the end of each |
| Who does it | One team designs, develops, tests, deploys and supports the app |
| The contract | Signed with our US company; we sign an NDA first if you need one |
| What you own | The code written for your app, once it is paid for |
A website or a web application
You need a web application when people log in to get something done: place an order, approve a request, follow their own numbers, run a part of your business. When they come to read, compare and then call you, a website does the job, and ours starts at $499. Many products are both: a public site that sells and an application behind the login.
Taking payments does not turn a site into an application. A site can take bookings and payments as add-ons; accounts, roles and data that people change every day are where an application begins. And if a subscription tool already covers your process, an app may not be worth building at all: the page on custom web applications shows how to put numbers on that choice.
Which kind of web app you need
Four situations cover most of the web app development services people ask us for:
| Your situation | What you need | Where the price starts |
|---|---|---|
| Users should add the app to the home screen from a link, open it offline and get notifications, with no app store | A progressive web app | A first version from $5,000 |
| Your process does not fit any tool you can buy | A custom web application | A first release from $5,000 |
| Many departments, roles, an audit trail and links to the systems you already run | An enterprise web application | An estimate from your systems, roles and reports, free |
| You want real users to test the idea before you pay for the rest | An MVP built to grow into the product | A web MVP from $5,000 |
Each has its own page: progressive web apps, enterprise web apps and web apps for startups, next to the custom one above. If people also need it as a phone app, we build the iPhone and Android versions on the backend the web app already uses: that is mobile app development.
What one team delivers
Our web application development services take an app from its first written requirement to the server it runs on:
- Discovery: what the app must do, how it will look and how it will be built, settled before the build starts.
- The interface people work in, designed for the phone and for the desk.
- The backend, the data, and an admin where your team runs the content and the data.
- Sign-in, payments, text messages and connections to your own systems through their APIs.
- A check on every task and a final QA by our tester before each release.
- Deployment, then support and the next features from the same team.
You know who works on your app by name, and you reach them without a go-between.
What we build it on
We choose the stack from what the app has to do and from who will look after it once it is live:
| The app needs | What we reach for | Why |
|---|---|---|
| Business data, roles and an admin from day one | Django with PostgreSQL | Django comes with an admin and a data layer, so the work starts at your logic |
| An API for other apps, devices or AI models | FastAPI | It is made for APIs and documents each one as it is written |
| Your own team already writes PHP | Laravel | Your people can keep working in it after launch |
| Many interactive screens | React or Vue | Both are widely used, so the people you hire later already know them |
| Public pages that search engines should read | Next.js | It renders pages on the server, so they arrive ready to index |
| Reports, imports and notifications that take time | Redis with background workers | The long work runs in the background, so screens stay fast |
Payments go through Stripe, text messages through Twilio and sign-in through Auth0 when that serves you better than building your own. The stack changes from app to app; who owns the code does not.
How a project runs
The start takes five steps, and each leaves you something in hand:
- Initial call. We learn the goal, the users and the deadline, and check that we are the right fit. Your part: describe the job the app does and who does it today.
- Questions and a rough estimate, free. You get a ballpark of time and cost to plan the next step. Your part: answer our questions in writing.
- Agreement. The contract with our US company fixes the scope, the budget and the dates. Your part: choose hourly billing or a fixed price.
- Discovery. The final requirements, the design and the technical approach. Your part: sign off the plan and the look of the main screens.
- Build and release. The work runs in two-week sprints, each closing with a demo of the working app; then come deployment and support. Your part: come to the demo and say what to change.
Every step in more detail: from first call to first release.
What the price depends on
A first version starts at $5,000, and the screens, the roles and the integrations set the rest. The estimate form on our pricing page asks about exactly what moves the number: accounts and roles, payments or subscriptions, an admin, chat or real-time updates, AI features, a CRM, an ERP or other APIs, maps, buyers and sellers on a marketplace, analytics dashboards, compliance needs and languages. Every box you tick means more screens, rules and tests.
You pay in one of two ways, agreed before the work starts:
- Hourly: an invoice every two weeks for the hours worked, which suits a scope that will change as you learn.
- A fixed price, paid by milestones: the agreed scope has a ceiling, so if we underestimated it, the difference is our cost. New work is estimated and approved by you before anyone builds it.
A first version can start at $5,000 because a person works in a pair with AI agents. We do not train AI on our clients' code; we give our agents the best practices my team has worked out over the years. The routine code and the checks go fast, an engineer reads the code before it goes further, and the decisions stay with people.
Web apps we worked on
- PBM Source, compliance software for pharmacy benefit managers. These companies answer to a steady flow of new laws and rules, and someone used to read the bills to find what applied. Now the platform does the reading: each new requirement becomes a task with a short summary, its jurisdiction and its dates, filtered by line of business so a team sees only its own. We delivered the alerts, the dashboard and the team workspace, plus the public home page and a pricing page for the subscriptions.
- RxPhoto, photo records for clinics. Doctors photograph patients at every visit, and each photo has to match the last one, stay private and be ready for the consultation or the insurer. Our part was the backend, the web front end and the API the mobile app talks to, along with custom patient reports, and we keep supporting the clinics that use it. The platform was designed for HIPAA work, with an audit log that shows administrators who opened which record and when. Per rxphoto.com, it holds 80m+ before-and-after photos.
- Raina Music, background music for hotels and restaurants. Venues get DJ-curated music on a small player, managed zone by zone from a phone. We reworked the streaming backend to serve many venues at once, built the mix that carries one track into the next like a live DJ, and tied the players, the app and the backend together over a two-way WebSocket, so a change on the phone reaches the room right away.
The bill after launch
A build quote prices the work up to launch. After that the app runs every month, and none of the four pages I read lists what running it costs. Budget for these lines; their prices depend on the provider and on how much the app is used, so ask each vendor to estimate them for your app:
| Line | What drives the cost | Whose account it should sit in |
|---|---|---|
| Hosting on AWS, Azure or Google Cloud | Traffic, and how many copies of the app run | Your company's cloud account |
| The database and file storage | How much data and how many files the app keeps | The same cloud account |
| Backups | How often copies are made, how long they are kept, where | Your account; cloud backup is a service of its own |
| Payments | A fee on every transaction | Your Stripe account |
| Text messages and email | A price for each message sent | Your Twilio or email service account |
| Sign-in | The number of active users; many providers charge past a free tier | Your Auth0 or identity provider account |
| AI features | Every call to a model, or the server that runs your own | Your account with the model provider, or your servers |
| Upkeep | Framework updates, fixes, outside APIs that change | Priced from the code, under web app maintenance |
| New features | What users ask for next | Estimated one by one, before the work |
Forward the table to whoever owns the budget. Whether you compare a freelancer with a web application development agency or two agencies with each other, ask each to estimate these monthly lines next to the build: a cheaper build on an expensive setup is not cheaper.
What a web app development company should leave with you
Whoever pays for the code should own it, and with us that is the rule: the code written for your app is yours once it is paid for. Many developers never hand the code over. Then every later fix stays with them, at their price, and if they close, the app goes with them.
The rest is housekeeping that is easiest on day one: the repository and the service accounts in the table above in your company's name, and a written list of who can log in where. We keep that list on every project, so a new developer starts from it, and so does the day you change teams.
Who answers, and where to start
26 Lines of Code is a web application development company in the USA: you sign with our company in Miami, and the delivery center near Kyiv is usually seven hours ahead, so the first hours of your working day overlap with the last hours of ours. On weekdays from 9 am to 6 pm Miami time, a new request gets an answer within 30 minutes. Clients rate us 5.0 on Clutch from 26 verified reviews as of September 2026, and not one of the reviews is negative.
If your own team should run the work with our developers inside it, that is staff augmentation, from $35 an hour depending on the role. Otherwise, write a few lines about the job the app should do and who will use it. The first call and the rough estimate are free.
