Android App Development

Native and cross-platform Android apps built for real device diversity — different screen sizes, OS versions, and hardware, not just a single reference phone.

Mobile

Android App Development

req/s, zero deadlocks
15Kreq/s, zero deadlocks
double-charges in production
0double-charges in production
production systems shipped
10+production systems shipped
years building for clients
7+years building for clients
Sound familiar

Signs you need this now.

Android's device fragmentation is the platform's defining challenge: thousands of device configurations, multiple OS versions in active use, and inconsistent hardware capabilities. An app tested only on a flagship phone often behaves differently on the mid-range devices most of the actual user base carries.

01

The app works on the developer's phone but not on users' devices

Crashes or layout issues show up on specific device/OS combinations that never got tested. Android's fragmentation means the gap between "works for me" and "works for users" is real and easy to underestimate.

02

Play Store review keeps rejecting the app

Google's review process has specific, sometimes non-obvious requirements (permissions justification, target API level, policy compliance) that catch first-time or infrequent submitters off guard.

03

Performance is fine on the emulator, poor on real mid-range devices

Emulators and high-end test devices don't reflect the actual hardware most Android users carry. An app that feels smooth in development can feel sluggish on the devices that make up most of the real market.

Scope

What you get.

Development and testing across real device diversity

Built and tested against the actual range of screen sizes, OS versions, and hardware tiers your users carry, not just a single reference device.

Native or cross-platform, chosen deliberately

Kotlin/Java native development or React Native, picked based on your actual requirements and whether iOS parity is also needed.

Play Store submission handled end to end

Including the policy compliance and permissions justification requirements that commonly trip up first submissions.

Performance tuned for mid-range hardware

Not just the flagship device the app was built on, since that is rarely representative of your actual user base.

Push notifications and background processing done correctly

Android's background execution limits handled properly, so notifications and background tasks work reliably across OS versions.

How it works

Four steps, no mystery.

01

Quick scoping call

A short call (or async over WhatsApp) to understand what you're working with and what "done" actually looks like for you.

02

Fixed scope, no surprises

A clear written plan of what's included and how long it takes, before any work starts.

03

The actual work

Progress you can see, not a black box. You get updates as milestones land, not just a status report at the end.

04

Handover

Everything documented and handed over cleanly, with a walkthrough so your team isn't stuck waiting on me for routine changes.

Related

You might also need.

Questions

Frequently asked.

Depends on whether you also need iOS, your timeline, and whether the app needs deep platform-specific capabilities. We recommend based on your actual requirements, not a default preference.

Start here

Tell me what you're dealing with.

Send a message and get a real reply within 24 hours, not an automated sequence.

Prefer email? info@hasnain.io

Or WhatsApp directly, same link as above