Contact person: Business Client

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Location: Delhi, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I have an existing Android APK that needs a quick yet solid tune-up. The current build suffers from noticeable performance issues, so your first task is to profile and optimize the code until the app runs smoothly on mid-range devices.

Once the speed and stability problems are resolved, I also want a small feature added: an “Invoice delete” option inside the app’s billing section. The button should remove the selected invoice entry from local storage (and our remote database if present) and immediately refresh the list without forcing a full reload.

Deliverables
• Optimised, crash-free APK plus updated source code
• Integrated “Invoice delete” feature with clean UI placement and working backend call
• Brief changelog summarising files edited, libraries updated and any gradle tweaks

I will supply the current APK and source on project start. Please work in Android Studio (Java/Kotlin or smali where required) and keep package names intact so users don’t need to reinstall from scratch. A concise walkthrough video or screenshots proving the bug fixes and new option in action will help speed up acceptance." (client-provided description)