# Chronos Revived: an Android client for the recovered smart disc BLE protocol

> Chronos Revived replaces the discontinued Android companion app for the Chronos smart disc using its recovered Bluetooth LE protocol. It handles notifications, steps, battery status and gestures, and can flash firmware supplied from the user's original APK. The protocol notes map GATT services, status bits, commands and device hardware identified from firmware analysis.

- Type: Case study
- Targets: Firmware · Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-08
- Original resource: <https://github.com/chartmann1590/chronos-revived>
- Primary source: <https://github.com/chartmann1590/chronos-revived/blob/5a64ac54de931f7da2e7a8ff963aea5146ca6f3b/README.md>
- Catalog page: <https://awesomerea.org/resources/chronos-revived-case/>
- Record JSON: <https://awesomerea.org/resources/chronos-revived-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/chronos-revived-case/index.md)

## Requirements & limits

- **Prerequisites:** Android 8.0 or newer, Bluetooth LE and a Chronos smart disc are required.
- **Prerequisites:** Firmware installation requires the user's copy of the original Chronos APK.
- **Limits:** The app currently supports Android only.
- **License:** MIT license.

## Primary sources

1. <https://github.com/chartmann1590/chronos-revived/blob/5a64ac54de931f7da2e7a8ff963aea5146ca6f3b/README.md>
2. <https://github.com/chartmann1590/chronos-revived/blob/5a64ac54de931f7da2e7a8ff963aea5146ca6f3b/PROTOCOL.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.