How I Built CatPulse, a Private Offline Cat Care App That Speaks 19 Languages

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Building software for cat care creates an unusual design problem. People want structure, reminders, and useful records, but the app must never pretend to replace a veterinarian. They may need to capture subtle changes in behavior, prepare for an appointment, brief a sitter, or find essential information during an emergency. At the same time, those records can contain sensitive details about routines, medication history, and household life.

CatPulse grew from that tension.

I wanted to build an Android app that could help people organize everyday cat care without requiring an account, an internet connection, or the surrender of personal data to a remote service. The result is CatPulse, a published Google Play app that works offline, stores user data in a local database on the device, supports 19 languages, and includes right to left interface support for Arabic.

The premise sounds simple. Keep cat care information on the phone and...

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