Don't treat mobile app development like building a web app

If you treat mobile app development like building a web app, you're going to have a bad time. Web frameworks love to promise "write once, run everywhere". This is fine in theory, but it can be painful in practice because mobile apps are not web apps.

Web mindset (what we're used to).

• Your app will be online
• When users refresh, they get the latest code

Mobile apps are different.

• Offline is normal
• Version fragmenting is real
• Device constraints exist

That changes everything.

Mobile apps are distributed systems, sometimes running on unreliable internet, with code that may be months old, and you can’t easily force an update. Once you accept that, everything changes.

Your API is now a public contract

On the web, you deploy once and move on. On mobile, old versions can stick around for months. Users can delay updates for weeks, while others never update.

✅ Design for backward compatibility
✅ Avoid breaking changes
✅ Expect multiple active versions in production

Offline is not an edge case

On the web: no internet = no app.
On mobile: no internet = your problem.

Networks can be slow, flaky, or nonexistent. If something fails silently, users blame you, not the network.

✅ Retry intelligently (not infinitely)
✅ Tell users what happened
✅ Distinguish retryable vs unrecoverable errors
✅ Persist user intent (don’t lose actions)

Consistency is nice, but platform expectations are better.

Yes, you want a unified experience across web and mobile. But mobile users have muscle memory.

✅ Respect platform UX conventions
✅ Don’t blindly reuse web UI patterns
✅ Design for touch, not mouse

⚠️ And please...

Do not blindly trust the emulator. Emulators are amazing... until they aren't. Test on real devices.

At the end of the day, mobile development isn’t necessarily harder than web development... It's different. It requires a mindset shift, so if you approach it with a web mindset, as we said before, you're going to have a bad time.