Contact person: App Development (Basic Calculator) & Closed Testing

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Location: CHENNAI, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"A lightweight Android calculator that performs the four basic arithmetic operations is all that’s required, but it must feel polished and bug-free before it reaches Google Play.

Core build
• Native Android code in Kotlin or Java—whichever you’re most comfortable with.
• Addition, subtraction, multiplication and division calculations must be instant and accurate, with clear error handling (divide-by-zero, overflow, etc.).
• Interface stays intentionally simple and clean: a single primary screen, large buttons, and legible results that adapt to phones and small tablets.

Closed testing phase
Once the first APK/AAB is ready, we’ll run it through an internal test track. I’ll supply up to ten tester emails; you’ll push the build, gather crash logs, and apply any necessary fixes before final sign-off.

Deliverables
• Complete, well-commented source code and build files.
• Signed release APK/AAB ready for Play Console upload.
• One concise test report outlining issues found and resolutions applied.

With a tidy codebase, a minimal interface, and solid closed-test results, the project is done." (client-provided description)