HoldFast Anchor Alarm

Anchor drag alarm for sailors

Free · In‑App Purchases

Anchor with confidence. HoldFast watches your boat's GPS all night and sounds a loud alarm the instant it starts to drag — so you can actually sleep. Anchor with confidence — and actually sleep. HoldFast keeps a constant GPS watch on your boat and sounds a loud alarm the instant it starts to drag — even with the screen off. The core anchor alarm is free, built by sailors for sailors. SET IT. FORGET IT. SLEEP. • Drop anchor — tap your position, or offset to the exact bow location • Set your swing — adjust the watch radius from 5m to 200m • Rest easy — HoldFast keeps watch in the background while you sleep TRUSTED ANCHOR MONITORING — FREE ROCK-SOLID BACKGROUND TRACKING — An optimized GPS engine stays awake with the screen off. If your boat moves, you'll know. NO FALSE ALARMS — You set the GPS-signal-loss threshold, from 30 seconds to several minutes. No more 3 AM "ghost" alerts. PROGRESSIVE ALARMS — A gentle nudge as you near the boundary, then a loud emergency alarm if you've truly broken free. You're warned early, not too late. NIGHT-VISION DARK MODE — Keeps your cockpit dark and your night vision intact. HOLDFAST PREMIUM Unlock the extras when you're ready — choose an annual plan, or pay once for lifetime access. CUSTOM ALARM ZONES — Draw a shape around rocks, shallows, or moorings instead of a plain circle. REMOTE WATCH — Share a private live link so family or crew ashore can track your position in real time from any web browser. GPS TRACK HISTORY — Replay exactly how your boat swung through the night on a colour-coded track. CUSTOM ALARM TONES — Choose a piercing tone that's guaranteed to wake you. PRIVATE BY DESIGN No account to create. No data collection. No internet required for core alarm functions — the watch runs entirely on your device. Download HoldFast and take the stress out of the anchorage. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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• New: "Have a code?" — redeem a discount or membership code right inside the app. Just tap it on the Premium screen. • More reliable unlocking: premium features now activate promptly after a purchase or code redemption. • Stability improvements and minor refinements. Fair winds and secure holding. Thanks for using HoldFast!

Version 1.0.7

The developer, Adam Harvey, 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 Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location

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
  • Adam Harvey
Size
  • 48.5 MB
Category
  • Navigation
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPad
    Requires iPadOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
Location
  • This app may use your location even when it isn’t open, which can decrease device battery life.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
  • HoldFast Premium $4.99
  • HoldFast Anchor Alarm $9.99
  • Learn More
Copyright
  • © 2026 Adam Harvey
  • Developer Website
  • Privacy Policy

    • More by Adam Harvey

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