HDZap

FPV Lap Timer with Goggle OSD

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

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/

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HDZap Premium — a new optional subscription that swaps the default iOS voice for natural AI announcer voices for lap-time call-outs. • Choose from 30 voices across AWS Polly and Microsoft Azure • Both English and Japanese supported, with per-language voice picker • Cancel anytime in Settings → Apple ID → Subscriptions Free tier is unchanged — the iOS system voice continues to work offline.

Version 1.1.0

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

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

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

Information

Seller
  • Tomohiko Koyama
Size
  • 2.5 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.
  • Apple Vision
    Requires visionOS 2.0 or later.
Languages
  • English and Japanese
Age Rating
4+
In-App Purchases
Yes
  • HDZap Premium Monthly $4.99
  • HDZap Premium Yearly $44.49
  • Learn More
Copyright
  • © 2026 Saqoosha
  • Developer Website
  • Privacy Policy

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