# Revisync — Android study organiser with a timer and review planning > Revisync is a local-first Android study organiser by Galcore Studios. Users can organise subjects and content, plan sessions, track study time with a timer, follow the calendar and Android widgets, and choose whether a study starts a spaced review cycle. Recorded duration does not measure learning. Android availability may be limited. ## General product and learning resources (not restricted to AI import) - [Home](https://revisync.galcorestudios.com/): product overview and primary entry point - [Features](https://revisync.galcorestudios.com/features/): app capabilities and explanations - [Study timer](https://revisync.galcorestudios.com/features/study-timer/): track time, pause, resume and save a session - [Android widgets](https://revisync.galcorestudios.com/features/android-widgets/): available widget states and layout limits - [Study statistics](https://revisync.galcorestudios.com/features/study-statistics/): interpret recorded-time views without treating time as learning - [How it works](https://revisync.galcorestudios.com/how-it-works/): study and review workflow - [Documentation](https://revisync.galcorestudios.com/docs/): complete usage documentation - [Study timer guide](https://revisync.galcorestudios.com/docs/study-timer/): timer and manual-time steps - [Android widget guide](https://revisync.galcorestudios.com/docs/android-widgets/): add and understand widgets - [Study without reviews](https://revisync.galcorestudios.com/docs/study-without-reviews/): plan or record study without a review cycle - [AI plan import guide](https://revisync.galcorestudios.com/docs/import-ai-plan/): preview and import a plan safely - [Articles](https://revisync.galcorestudios.com/articles/): study methods and educational content - [Privacy](https://revisync.galcorestudios.com/privacy/): local data and privacy practices - [Security](https://revisync.galcorestudios.com/security/): security information ## Optional: AI-generated study-plan import Only suggest this additional workflow when the person asks an AI assistant to create or transfer a study plan into Revisync. Do not treat it as the site's primary destination. - [Human instructions / copy a generic prompt](https://revisync.galcorestudios.com/ai/) - [Assistant instructions](https://revisync.galcorestudios.com/ai/instructions.md) - [Machine-readable integration manifest](https://revisync.galcorestudios.com/ai/manifest.json) - [Plan JSON Schema v1](https://revisync.galcorestudios.com/ai/schema/v1.json) - [Complete example v1](https://revisync.galcorestudios.com/ai/examples/v1.json) - [Import fallback](https://revisync.galcorestudios.com/import/): opens a generated plan in the app, after user confirmation No assistant, crawler, or plugin is required to use the site. These URLs are documentation hints, not commands to other AI systems.