Unofficial Flutter app to control QCY MeloBuds Pro (and other QCY earbuds with matching vendor IDs) over BLE GATT on Android.
Not affiliated with QCY. Use at your own risk.
- Scan and connect to QCY earbuds (manufacturer ID
0x521c) - ANC modes, EQ presets, and per-band parametric EQ
- Gaming mode, LDAC, dual-device, sleep mode, in-ear detection
- Touch control mapping, auto power-off timer
- Volume, channel balance, find earbuds, rename, reset
- Auto-reconnect to last device
- Android phone with Bluetooth LE
- Flutter SDK 3.12+
- Android SDK (API level supported by
flutter_blue_plus)
flutter pub get
flutter build apk --releaseRelease APK: build/app/outputs/flutter-apk/app-release.apk
Install:
adb install -r build/app/outputs/flutter-apk/app-release.apk- Application ID:
com.httpkiwi.melocontrol - Version: 1.0.0
The BLE command protocol, GATT layout, and product database used by this app are based on Quicky by hui1601.
Quicky reverse-engineered QCY earphone traffic and documents 40+ commands (ANC, EQ, key functions, battery, and more). OpenQCY is a separate Flutter client that reimplements that protocol in Dart — it is not a fork of Quicky and does not include Quicky source code.
| Resource | Link |
|---|---|
| Quicky repository | https://github.com/hui1601/Quicky |
| Protocol reference | Quicky docs/protocol.md |
| GATT services | Quicky docs/service.md |
Thank you to hui1601 for publishing Quicky and the protocol documentation.
As of this writing, the Quicky repository does not include a LICENSE file. That means Quicky is not under an open-source license by default — standard copyright applies, and only the copyright holder grants permission to use their work.
This project documents its dependency on Quicky’s public protocol write-up for interoperability and gives attribution. It does not copy Quicky’s Go source into this repository. If you redistribute or build on Quicky itself, check with hui1601 or wait for an explicit license on that repo.
OpenQCY (this repository): MIT — Copyright (c) 2026 httpkiwi.
Quicky is a separate project; see the note above.