HDZap

HDZap is a manual lap timer for FPV drone racing.

Tap the LAP button as your pilot crosses the finish line — the split time instantly appears on their Digital FPV Goggle OSD via the M5StickS3 Bluetooth bridge.

No hardware? No problem. HDZap works as a standalone lap timer — race history, best laps, and pace tracking all work without any external device.

FEATURES • One-tap lap recording • Live lap time on Digital FPV Goggle OSD via ESP-NOW • Race history with best lap and lap averages • Share race results as an image • Flight battery voltage and percentage from backpack telemetry • Adjustable OSD layout • Low-latency BLE connection

OPTIONAL HARDWARE (for OSD display) • M5StickS3 (ESP32-S3) flashed with HDZap firmware • Digital FPV Goggle with ELRS backpack

The firmware and setup guide are available at the support link below.

HDZAP PREMIUM (OPTIONAL SUBSCRIPTION) Swap the default iOS voice for natural AI announcer voices powered by AWS Polly and Microsoft Azure — 30 voices in English and Japanese.

• HDZap Premium Monthly — JPY 450 / month • HDZap Premium Yearly — JPY 4,000 / year

Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in Settings → Apple ID → Subscriptions. Payment is charged to your Apple ID account at confirmation of purchase.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://saqoosha.github.io/HDZap/privacy/