About Open Call Shield

OpenCallShield English** · Español · Português · Français · Deutsch · Русский · 中文 · 日本語 · 한국어 Open source (MIT) Android app that **blocks SPAM calls** using CallScreeningService (Android 10+), with a local Room database, a detection rules engine and sync with a public collaborative list hosted on GitHub. A privacy-first, decentralized alternative to Truecaller. ⬇️ Download **Google Play:** https://play.google.com/store/apps/details?id=com.jhonsu01.opencallshield **Direct APK:** download the .apk from **Releases**. 📱 Screenshots Screenshots in every language are in playstore/screenshots/. ✨ Features **Automatic blocking** through CallScreeningService (reject or silence). **Rules engine:** known contact → allow; reported number → block; blacklisted prefix → block; number not in contacts → optional. **Block by country** with one tap on the flag (no prefixes to type). **Local Room database** of reported numbers. **Sync** with a public JSON on GitHub (daily via WorkManager + manual). **Reports** and history of filtered calls (add / remove numbers with one tap). **9 languages:** English, Español, Português, Français, Deutsch, Русский, 中文, 日本語, 한국어 — pick one from the 🌐 icon in the app or from Android's per-app language settings. **UI** in Jetpack Compose (Material 3). 🏗️ Stack Kotlin · Jetpack Compose (Material 3) · Room · WorkManager · AppCompat (per-app language) · MVVM ·…

Release archive