HDZap

FPV Lap Timer with Goggle OSD

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Instant lap times on your Digital FPV Goggle OSD — one tap, no wires. 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.

Ratings & Reviews

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• Spoken countdown ("ten, nine, ...") and "Final lap!" cue near the session end (toggleable in Settings). • Press-down haptic on the large action buttons (LAP / STOP / RESET / SHARE / READY), paired with the existing release-edge haptic and a soft press-dim. • Larger Elapsed and Remain readouts on the session bar — easier to read at a glance mid-race. • Optional M5StickS3 bridge — pair directly with the goggle's ESP32 backpack if you prefer not to relay through the StickS3. • Audio session stability fixes around TTS playback and BLE notifications. • Flight-battery telemetry now reflects pack voltage from the very first lap.

Version 1.0.1

The developer, Saqoosha, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases

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Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Tomohiko Koyama
Size
  • 2 MB
Category
  • Sports
Compatibility
Requires iOS 18.0 or later.
  • iPhone
    Requires iOS 18.0 or later.
  • Mac
    Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
Languages
  • Japanese
Age Rating
4+
Copyright
  • © 2026 Saqoosha
  • Developer Website
  • Privacy Policy