Daven with less friction
AndDaaven
Davening, always on the right page.
A siddur for Android that keeps up with the calendar. AndDaaven knows when it's Shabbos or Yom Tov and quietly adjusts the tefillos for you — so you open the app and land exactly where you're meant to be, without flipping or second-guessing.
Coming soon to Google PlayOpen to the right place, every time
Two text engines power the app. The personal flavor uses a structured JSON schema with typed when/then/else conditions — no fragile inline markers. The public flavor preserves the legacy .utf8 layout from the original 2012 Java app.
A single section-rules engine drives both: it decides which sections to show or hide based on the Hebrew calendar date, sunset time, and the day's liturgical requirements. GPS sunset detection via USNO for accurate day-boundary calculation.
Calendar-aware prayer engine
Key features
Shabbos & Yom Tov aware
The app follows the Jewish calendar and shifts the davening to match the day — weekday, Shabbos, or Yom Tov — so the right nusach is already in front of you.
Clean Hebrew text
Normalized Hebrew encoding: base consonants + combining marks, no presentation forms. Two parallel text engines — structured JSON and legacy .utf8 — both driven by the same section-rule system.
Works offline
The full siddur lives on your device — no signal, no data. Built in Flutter with GPS sunset detection. The tefillos are there whenever and wherever you daven.
Two flavors, one codebase
AndDaaven is built in Flutter with two compile-time flavors (isPersonalFlavor in flavor_config.dart). The Public flavor is a faithful rewrite of the 2012 Java original with static text and legacy file layout. The Personal flavor adds GPS sunset detection, dynamic prayer text via the structured JSON engine, a sefiras haomer screen, and a test date bar — intended for weekday and Rosh Chodesh/Chol HaMoed use only (never on Shabbos or Yom Tov).