Offline Currency Converter

Offline Currency Converter is a privacy-focused currency converter that works completely offline. No account, no tracking, no analytics — just exchange rates in your pocket.


Sync rates from the free Frankfurter API (European Central Bank) and convert 160+ currencies entirely offline. Configure sync intervals (6h, 12h, 24h, 48h, weekly, or manual only) and let WorkManager handle background updates.


Features:

• Favorites — star your most-used currencies for quick access


• Multi-currency view — see conversions to all your favorites at once


• Rate trend charts — 90-day interactive charts with touch tooltips and date range tabs


• Home screen widget — Material You dynamic colors, works with any currency pair


• Sync status — colored badge shows how fresh your rates are


• 160+ currencies — all ECB reference rates


• Offline-first — all conversions happen on device


• Privacy first — no accounts, no tracking, no network permissions at runtime


• Material Design 3 — modern UI with dynamic theming


• 13 languages — ar, de, es, fr, hi, it, ja, ko, nl, pl, pt, ru, zh

Free and open source (AGPLv3).

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