Mobile Apps

Keeping a Mobile App Fast as It Grows

Abishek BimaliFounder & EngineerJune 4, 20262 min read
Keeping a Mobile App Fast as It Grows

Almost every app is fast on day one. The slowdown creeps in as features pile up, each adding a little startup time and memory. Keeping an app fast is a habit, not a one-time fix.

Protect startup time

First launch impression matters most. Defer work that is not needed immediately, and avoid loading everything before the first screen appears.

Watch the usual offenders

  • Large images and uncompressed assets.
  • Long lists that render every item at once.
  • Heavy work on the main thread that blocks taps.

Measure on the phones people own

A flagship device hides problems. Test on a mid-range phone, which is what most of your users actually carry, and optimise for that.

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Abishek Bimali

Founder & Engineer

Abishek founded SiteCraft Innovation and leads its engineering. He writes about building web and mobile products that hold up in production, for teams in Nepal and abroad.