UBIKON.ioMobile
Flutter Mobile App Development
Typical engagement: $8k–$45k · 4–12 weeks
What this is
Ubikon builds iOS and Android apps from a single Flutter codebase — one engineering team, one release cadence, native performance on both platforms. A typical build runs $8k–$45k across 4–12 weeks depending on scope, and ships with authentication, payments, offline sync, push notifications and store submission handled, not left as a follow-up phase.
What you get
Concrete deliverables, not a vague promise.
- —Private Git repository, full commit history, 100% IP transfer on work delivered
- —CI/CD pipeline running lint, typecheck and tests on every merge
- —App Store and Google Play submissions, including store listing copy and screenshots
- —API documentation for every backend endpoint the app depends on
- —A written handover doc: architecture decisions, environment setup, and how to deploy an update
How we build it
Stack and architecture for a typical build.
Flutter and Dart for the app itself, Firebase for auth/push/crash reporting on simpler builds, a custom FastAPI backend when the product needs more than a BaaS can comfortably do, and Razorpay or Stripe for payments depending on the primary market.
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
Flutter vs native for a typical product build
Native has real advantages in specific cases — here is where each one actually wins.
| Flutter (Ubikon default) | Native (Swift + Kotlin) | |
|---|---|---|
| Team size to maintain | One team, one codebase | Two teams, two codebases |
| Time to ship both platforms | In parallel, same timeline | Effectively double, unless staffed for both |
| Access to brand-new platform APIs | Usually within weeks of release | Day one |
| Best fit | Most product apps: content, commerce, booking, internal tools | Apps leaning hard on platform-specific hardware or AR/VR |
Process
4–12 weeks, start to launch.
Scoping call
30 minutes to describe the product; screens, platforms and integrations get listed, not guessed at.
Fixed quote, 48 hours
Line-item pricing by screen and feature, plus a milestone plan.
Weekly builds
A real build you install on your own phone every week, from week one.
Store submission
Both stores handled, including responding to review rejections.
Straight answers
What buyers ask about this service
How much does a Flutter app cost? +
Most builds run $8,000–$45,000 depending on screen count, integrations and design complexity. A booking or content app sits at the lower end; an app with payments, real-time chat and an admin panel sits higher.
Why Flutter instead of building native iOS and Android apps separately? +
One Flutter codebase covers both platforms with native-level performance, which roughly halves ongoing maintenance cost versus two separate native codebases. We reach for native only when a product genuinely needs day-one access to brand-new platform APIs or heavy AR/hardware integration.
Do you handle App Store and Google Play submission? +
Yes — store listings, screenshots, and responding to review rejections are part of every mobile engagement, not a separate line item.
Can you take over an existing Flutter app someone else built? +
Yes. We start with a codebase audit against our published standards before quoting further work, so you know what you are inheriting before we touch it.
What backend do you pair with the app? +
Firebase for simpler builds where a BaaS covers the need; a custom FastAPI + PostgreSQL backend once the product needs real business logic, complex queries, or data ownership a BaaS makes awkward.
Related
Other services worth a look
One call. One fixed number.
Tell us about your mobile app development project.
30 minutes, no deck. A fixed quote follows within 48 hours.