The problemThe average app project costs $90,780 and takes eleven months.
Custom Mobile App Development: One App for iPhone and Android, at a Fixed Price
In shortCustom mobile app development from Pixel & Oak means one React Native app for iPhone and Android, built from a written scope at a fixed price and released to the App Store and Google Play under your own accounts. A first version with sign-in, one core workflow and the store listings starts at $8,000 and takes 6–12 weeks.
Most people who look for a custom mobile app development company already have a few quotes, and they do not line up. One says $150,000, another says $5,000, and none explains what the difference buys. Price follows scope: how many screens, how many kinds of user, what the app connects to, and whether it must work offline or in real time.
We build in React Native with Expo, so one code base runs on iPhone and Android, and we price a first version that does one job well before anything else. We are an agency of one: Haider Ali directs the AI agents that write and test the code and signs off every release. Our own two apps, a rides marketplace and an AI résumé builder, are live on Google Play.
What founders and business owners ask before they hire anyone, often in exactly these words.
Every quote for my app is different, from $5,000 to $150,000
With nothing to compare them by, owners either pay for features nobody asked for or take the cheapest offer and pay again to rebuild it a year later.
What we doA written scope first: every screen, type of user and integration, priced once. If something is not on the list, it is not in the price, and you can see that before you sign.
Do I need two apps, one for iPhone and one for Android?
Two native apps mean two code bases, two sets of bugs and close to double the cost to build and maintain, for features most business apps never use.
What we doOne React Native code base for both platforms, with native code only where a feature truly needs it, such as a payment SDK or background location.
Our developer disappeared and we cannot update the app
Without the source code, the signing keys and the store accounts, nobody can ship even a one-line fix. Founders lose months of paid work this way.
What we doThe repository, signing keys, Expo account and store developer accounts are set up in your name before we write any code, and you can see every commit as it lands.
Google Play wants 12 testers for 14 days before we can launch
Personal developer accounts created after November 13, 2023 must run a closed test with at least 12 testers opted in for 14 days in a row, then wait for review. Many founders find out in launch week.
What we doWe plan the closed test into the schedule from the first build, or publish under your company's organization account, which the rule does not cover.
The store rejected our app and the email does not say how to fix it
A rejection sends the release back to the queue. Common causes are missing login details for the reviewer, permissions the app cannot justify and a privacy policy that does not match the listing.
What we doReviewer notes, a demo account and privacy answers are ready before the first submission. When Google Play rejected one of our own releases over a privacy-policy mismatch, we fixed it the same day.
This is for you if
✓You need an app your customers or staff install from the App Store or Google Play
✓You want one code base for iPhone and Android instead of paying for two apps
✓You have quotes you cannot compare, or a freelancer who went quiet
✓You want the code, the store listings and the developer accounts in your own name
This is probably not for you if
✕A website that works well on phones would do the job. It costs less, and we will tell you so
✕Your app is really a 3D game. That is a game build, and we quote it as one
We would rather tell you now than take the project and disappoint you.
Custom mobile app development at a glance
Starts from
$8,000 for a first version: sign-in, one core workflow and the store listings
Typical timeline
6–12 weeks from signed scope to store release
Platforms
iPhone and Android from one React Native code base
Built with
React Native, Expo and TypeScript, with Supabase or your own API behind it
What you own
Code, signing keys, developer accounts and store listings, all in your name
Store fees
Apple charges $99 a year and Google Play $25 once, paid to them directly
Yearly upkeep
Budget 15–20% of the build cost a year for updates and new phone software
Who builds it
Haider Ali directing AI agents. He signs off every release
Proof so far
Two React Native apps of our own, live on Google Play
Worth knowing: Published price guides do not agree. Clutch's app pricing guide, updated September 2026, puts the average app project at $90,780 over about 11 months, yet most projects reviewed there fall between $10,000 and $49,999. A first version that does one job costs far less than a full product, which is why we price it on its own. One honest limit: our own two apps are live on Google Play and neither is on the App Store yet. iPhone builds come from the same code and reach your testers through Apple's TestFlight before release.
What you get
Written scope and fixed price
Every screen, type of user and integration listed and priced once. Changes are quoted before anyone builds them.
Design for both platforms
Screens that follow iPhone and Android conventions, checked on small and large phones.
One code base
React Native with Expo and TypeScript, with native modules only where a feature needs them.
Backend and sign-in
Accounts, data and file storage on Supabase or your own API, with access rules enforced on the server.
Crash reporting
Errors reach us with the device, the app version and the steps that caused them, from the first build.
Testing before launch
A Google Play closed test and TestFlight builds for your team, with the 12-tester rule planned in.
Store listings and review
Screenshots, descriptions, privacy answers and reviewer notes for both stores, and replies to any rejection.
Handover
Code, keys, accounts and a plain-language guide to releasing updates, so another developer can take over.
Do you need an app, or a website that works on phones?
Mobile website
React Native app
Two native apps
Install from a store
No, it opens from a link
Yes, App Store and Google Play
Yes
Push notifications
Limited; on iPhone only after adding it to the home screen
Yes
Yes
Camera, location, Bluetooth
Some, through the browser
Yes, through native modules
Yes
Works offline
Partly
Yes
Yes
Code bases to maintain
One
One
Two
Cost of a first version
Lowest
Middle
Close to double the single app
If customers only need to look something up, book or pay, a fast mobile website is cheaper, and we will say so. An app earns its cost when people use it every week, need notifications, or need the camera, location or offline access.
What decides the price of an app?
Price follows scope, and scope is easier to compare than quotes. These six things move it the most:
→Types of user — A customer app is one set of screens. A customer, a driver and an admin are three.
→Integrations — Payments, maps, a CRM or an existing database each add work and testing.
→Real time — Live tracking, chat or bidding need a server that pushes updates as they happen.
→Offline use — Saving work on the phone and syncing it later is one of the costliest features to get right.
→Admin tools — Someone has to manage users, content and refunds, usually in a web dashboard.
→Design — Custom illustration and motion cost more than clean screens built on platform conventions.
What we build apps with
Mainstream tools, so any React Native developer can pick the app up after us.
App
React Native, Expo, TypeScript, Expo Router
Backend
Supabase (Postgres, sign-in, storage), Cloudflare Workers or your own API
Builds and releases
Expo EAS Build and Submit, Google Play Console, App Store Connect
Quality
Sentry crash reports, automated tests, Google Play closed testing and TestFlight
Not sure whether a custom mobile app is what you actually need? Send over what you are trying to fix and we will tell you straight — including if a smaller job would do it.
We agree the one job the app must do, every screen and type of user, and what waits for version two.
2
Fixed quote
One price for the first version, with store fees and running costs estimated, so you know the total.
3
Weekly test builds
You install real builds on your own phone as features land. Haider reviews and signs off each one.
4
Store release
Closed testing, store listings and review, then release in your accounts, with two weeks of fixes included.
Who works on it
AI agents from our Engineering, Quality & Security and Design & Film divisions do the work, in parallel. Haider Ali, founder and CEO, agrees the plan with you and signs off everything before it reaches you.
Our first versions start at $8,000 for one app on iPhone and Android with sign-in, one core workflow and the store listings. Apps with several types of user, payments, real-time features or offline sync are quoted after we write the scope together. Published 2026 guides put most agency projects between $10,000 and $50,000, and complex apps above $150,000.
How long does it take to build an app?
Six to twelve weeks for a first version, from a signed scope to the store release. Add two weeks if a new personal Google Play account must run its 14-day closed test, and allow for store review: Google says its production-access review usually takes seven days or less, and Apple reviews most apps within a day or two.
Do I need separate iPhone and Android apps?
Usually not. React Native runs one code base on both platforms and uses each platform's own interface components, so the app feels at home on both. Separate native apps make sense when the app is built around one deep platform feature, such as advanced augmented reality, which most business apps are not.
Why do you build with React Native?
One TypeScript code base serves both platforms, it shares a language with the websites and back ends we build, and Expo's cloud build service signs and builds both versions. Many developers know it, so you can hire someone else to maintain the app later. When Flutter or native code fits a project better, we say so.
Who owns the app and the code?
You do. The repository, the app signing keys, the Expo account and the Apple and Google developer accounts are created in your name before any code is written. If you stop working with us, you keep everything and can hand it to another developer the same day.
What does it cost to keep an app running?
Apple charges $99 a year for its developer program and Google Play charges $25 once. Servers for a small app cost little at first and grow with use. The larger cost is upkeep: new iPhone and Android versions, library updates and Google Play's yearly target-version rule. Industry guides suggest 15–20% of the build cost a year.
What is Google Play's 12-tester rule?
Personal Google Play developer accounts created after November 13, 2023 must run a closed test with at least 12 testers who stay opted in for 14 days in a row before they can apply for production access. Organization accounts are not covered by that rule. We plan the closed test into the schedule or set the app up under your company account.
Have you built and published apps before?
Yes. Our own two React Native apps are live on Google Play: SafarGB, a rides marketplace in English and Urdu, and an AI résumé builder with a store listing in 21 languages. Neither is on the App Store yet, and we have no client app case studies to publish, so we show you those two apps instead of numbers we cannot back up.
Can you take over an app another developer started?
Often, yes. We start with a paid code review of the versions, libraries, build setup and accounts, then tell you plainly whether to continue, upgrade or rebuild parts of it. If the code or signing keys are missing, we help you recover what you can from the stores and the hosting before deciding.