UBIKON.ioMobile
React Native App Development
Typical engagement: $8k–$45k · 4–12 weeks
What this is
Ubikon builds React Native apps in the specific cases where the framework genuinely wins — an existing React/TypeScript team that will maintain the app, a brownfield React Native codebase worth extending, or heavy code sharing with a React web app. Builds run $8k–$45k across 4–12 weeks, the same mobile band as our Flutter work, because the framework choice does not change the price. Our default recommendation is still Flutter, and we say so before quoting.
What you get
Concrete deliverables, not a vague promise.
- —A written framework recommendation — React Native or Flutter — with the reasoning, before any quote
- —A TypeScript-strict React Native codebase your existing React team can maintain without us
- —Business logic, validation and API clients extracted into shared TypeScript packages your React web app can import
- —App Store and Google Play submissions, including store listing copy and responding to review rejections
- —Private Git repository, full commit history, 100% IP transfer, and a written handover doc for the maintaining team
How we build it
Stack and architecture for a typical build.
React Native with TypeScript in strict mode — Expo where it covers the need, the bare workflow where custom native modules force it — shared TypeScript packages when there is a React web app to share logic with, and the same FastAPI + PostgreSQL backend we pair with our Flutter builds.
Pricing
Where the number comes from.
The $8k–$45k range above is priced from real delivery data across 300+ completed projects — not a day rate multiplied by a guess. A full itemized breakdown by phase is available on a scoping call, or get a rough one now from the calculator below.
Open the cost calculator →The honest comparison
React Native vs Flutter — how we actually decide
We build with both and recommend per project. Flutter is the default; these are the criteria that flip the decision to React Native — and the rows where Flutter simply wins.
| React Native | Flutter (Ubikon default) | |
|---|---|---|
| Your maintaining team's background | React/TypeScript devs are productive in it from week one | Dart is a new language for most in-house teams |
| Code sharing with a React web app | Real — logic, validation and API clients ship as shared TypeScript packages | None — Dart shares no code with a React web codebase |
| Performance-critical, animation-heavy UI | Good — though heavy animation still crosses the JS-to-native boundary | Stronger — its own rendering engine, no JS-to-native hop |
| You already have a React Native codebase | Extend it — a working brownfield app rarely justifies a rewrite | Means a full rewrite; rarely the honest recommendation |
| Hiring pool if you staff it yourself | Larger — every React developer is most of the way there | Smaller, though this matters less if Ubikon maintains the app |
Process
4–12 weeks, start to launch.
Framework fit check
Your team's background, any existing RN codebase, and how much logic a React web app could share — the framework call is made and written down with reasoning before scope is priced.
Fixed quote, 48 hours
Line-item pricing by screen and feature — the same mobile band whichever framework wins, because the framework does not change the price.
Weekly builds
An installable build, a video walkthrough and a written changelog every week — for takeovers, from the first week inside your existing codebase.
Handover your team can run
Both store submissions handled, plus a handover doc written for the React team that will maintain the app after us.
Straight answers
What buyers ask about this service
Should I pick React Native or Flutter? +
Flutter, unless one of three things is true: the team maintaining the app writes React/TypeScript, you have an existing React Native codebase worth extending, or you need heavy code sharing with a React web app. Those are the criteria we apply on the scoping call, and the recommendation is written down with reasoning before we quote. If none apply, we will tell you Flutter serves you better — it is our default for a reason.
Can you take over an existing React Native app? +
Yes — a codebase audit against our published standards comes first, so you know what you are inheriting before we quote further work. After that the process is identical to a greenfield build: a fixed line-item quote within 48 hours, weekly builds with a video walkthrough and changelog, and full IP transfer including work delivered mid-engagement.
How much does a React Native app cost? +
The same as our Flutter builds: $8,000–$45,000 across 4–12 weeks, because the framework does not change the pricing band — screen count, integrations and design complexity do. The quote is fixed and line-item, delivered within 48 hours of a 30-minute scoping call. Below $5,000 the fixed-quote model does not work and a freelancer will serve you better.
Why is your default Flutter if you build React Native too? +
Because for a team with no existing React investment, Flutter's single codebase and rendering engine usually produce the better app for the same budget. React Native earns its place when a React/TypeScript team will maintain the app or a React web app has logic to share — absent that, recommending it would be recommending your second-best option. We build with both and decide per project on your team, target platforms and performance requirements.
One call. One fixed number.
Tell us about your react native development project.
30 minutes, no deck. A fixed quote follows within 48 hours.