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Shahzaib Hassan
Services
Build a new app

Flutter app development for startups and product teams

Plan your new app

The problem

A first version built quickly and carelessly gets expensive fast. Features start breaking each other, releases slow down, and within a year someone suggests a rewrite.

Who it's for

Founders with an idea or designs and no mobile team, companies adding a mobile product, and agencies that need a senior Flutter developer for a client build.

What I do

I turn your designs or spec into a production Flutter app for iOS and Android from one codebase. I plan the architecture first: how state is managed, how the app talks to your backend, and where integrations like payments or real-time chat fit. Then I build in milestones you can install and test, and take the app through App Store and Google Play review.

How it runs

  1. 1Scope call: what ships first, what waits, how we'll measure it
  2. 2Architecture and a milestone plan
  3. 3Builds on TestFlight and Google Play internal testing as features land
  4. 4Store submission, review fixes, and launch
  5. 5Handover with documentation, or straight into maintenance

What you get

A production app on both stores, a clean repository you own, setup notes for your next developer, and a codebase that won't need rewriting when you grow.

Why experience matters here

The expensive mistakes in a new app are made in the first two weeks: state management choices, API structure, how subscriptions are verified. I've lived with those decisions long after launch, so I make them carefully.

Related case studies

Questions

Do you design the app too?

I build from your designs, usually in Figma. If you don't have designs, I can work with a designer you choose or recommend one.

Who owns the code?

You do, from the first commit. The code lives in your repository, and the app is published under your developer accounts.

Do you handle App Store and Google Play submission?

Yes, including store listings, review guidelines, and fixing rejections until the app is approved.

Is Flutter the right choice for my app?

For most products that need iOS and Android, yes: one codebase, native performance, and faster releases. If your app depends heavily on platform-specific features, I'll tell you before we start.

What time zone do you work in?

Pakistan, UTC+5. That overlaps with European working hours and US mornings. We agree on shared hours at the start of each project.

Planning a new app?

Plan your new app