Tarc's Android app is built from the same codebase as the web app, using Capacitor to wrap the web app for native distribution.
Because both the web and Android apps share one source tree, course content, lessons, XP, gems, streaks, quests, and achievements all work identically between them — there's no separate "Android-only" or "web-only" feature set for the core learning experience.
Google sign-in behaves differently for a technical reason: Google's OAuth screen doesn't allow itself to load inside a generic in-app browser view, so the Android app opens the system browser (Chrome Custom Tabs) for Google sign-in and returns via a deep link — see Google Login for detail. Email sign-in works the same way on both platforms.
Signing in with the same account on Android and the web keeps your progress in sync via Cloud Sync — there's no separate Android-only account system.
The Android app is available for install as a standard Android application package. Once installed, it behaves like any native Android app (its own icon, runs independently of a browser tab).
No — it's built from the same source tree, wrapped with Capacitor for native Android distribution, so core features behave identically.
Google's OAuth screen blocks itself from loading inside embedded in-app browser views, so the Android app opens the system browser and returns via a deep link, unlike the web app's direct redirect.
Yes — signing in with the same account on both keeps your progress in sync via Cloud Sync.