# AnchorBase - Anchor Alarm — Sleep safer at anchor

> Sleep safer at anchor (iPhone/iPad app by Ronald Gijsel.)

- Source: https://appshunter.io/ios/app/anchorbase-anchor-alarm/id6762142484 (this page in markdown: same URL + `.md`)
- Developer: [Ronald Gijsel](https://appshunter.io/developer/1892312513)
- Category: Utilities, Navigation
- Price: Free
- Age rating: 4+
- Requires: iOS 16.1 · 26 MB
- Languages: English
- Released: 2026-06-12
- Data updated: 2026-07-31
- User reviews in markdown: https://appshunter.io/ios/app/anchorbase-anchor-alarm/id6762142484/reviews.md

## What is AnchorBase?

AnchorBase is a reliable anchor alarm for sailors, cruisers, and boat owners who want peace of mind at anchor.

Drop your anchor point, set a safe swing radius, and AnchorBase keeps watch using your device’s GPS position. Whether you are relaxing onboard, cooking, leaving the boat briefly, or sleeping overnight, AnchorBase helps alert you if your boat starts to move outside your chosen safe zone.

WAKE UP WHEN IT MATTERS
AnchorBase is designed to give clear, urgent alerts when your boat may be dragging. A loud alarm and simple warning screen help you respond quickly, even at night.
The app can continue monitoring in the background using your device location, so your anchor watch keeps running when the screen is off or the app is not open.

SMARTER DRAG DETECTION
AnchorBase is built to reduce unnecessary false alarms while still warning you when movement becomes concerning.
It checks more than just distance. By looking at position, movement, speed, bearing, and GPS behaviour together, AnchorBase helps separate normal swinging from possible anchor drag.
It can also detect slower movement over time, helping catch gradual dragging rather than only sudden break-outs.
A clear status panel shows how AnchorBase sees your boat, with plain-language risk levels and explanations instead of confusing technical data.

CLEAR ANCHOR WATCH DISPLAY
See your anchor point, safe swing circle, live boat position, and recent movement directly on the map.
AnchorBase gives you a clear view of where your boat is in relation to your safe zone, helping you understand what is happening at a glance.

SHARE YOUR ANCHOR WATCH
Share a live link with crew, family, or friends so they can follow your boat’s position in real time.
You can also monitor your anchor watch from a second device, making it easier to keep an eye on the boat from onboard or nearby.

USEFUL ANCHORAGE TOOLS
AnchorBase includes helpful extras for life at anchor, including tide awareness, wind advisories, and an anchor session logbook.
Your sessions and tracks can be saved, giving you a useful record of where you anchored and how your boat moved.

START IN SECONDS
No account is needed to begin. Start as a guest, set your anchor alarm, and create an account later if you want to save and continue your session.

BUILT FOR TRUST
Your position stays private unless you choose to share a live link. You stay in control of who can see your boat’s location.

AnchorBase is built to be clear, calm, and easy to use when it matters most. Made by sailors for sailors

IMPORTANT

AnchorBase is designed as a sailing aid. It should not replace proper anchoring technique, regular checks, weather awareness, seamanship, or onboard navigation and safety equipment.


## Version history (last 5 releases)

### 2.1.4 — 2026-07-29

Drop Anchor now responds instantly, every time. If GPS needs a moment, the app keeps working on it and drops the anchor the second a trustworthy fix lands — you'll never be asked to "try again."
Point & Set now corrects your compass bearing for magnetic declination automatically and accounts for your bow offset, so the projected anchor position is noticeably more accurate.
The suggested alarm radius is now based on how much rode you actually laid out — no more one-size-fits-all default.
A watch you can trust overnight

The anchor watch now runs at full strength while you use other parts of the app — browsing History or the Logbook no longer affects monitoring or triggers false alerts.
Sailing solo? Backup alerts now reach your own phone if the app is ever killed overnight, and the "watch stopped" warning repeats until you've seen it.
Anchored somewhere without signal? The watch now stays armed through connection gaps.
New warnings that actually wake you: Low Power Mode detection mid-watch, a louder low-battery alert, and battery warnings that tell you how many hours of watch you really have left.

### 2.1.3 — 2026-07-14

Setting up AnchorBase is now faster and friendlier.

• Quicker setup — just your name and your boat, and you're ready to drop anchor. Trying it out? Skip setup and start watching in a single tap.
• Meet your boat — name it and watch it come to life on the water as you type.
• Learn as you go — a new "How AnchorBase works" guide and a 10-second demo are always a tap away, from the anchor screen and Settings → Help. Reviewing them never changes your boat or your history.
• Test the alarm, for real. Tapping "Test the alarm" now plays the exact sound at the exact volume that fires if your boat drags — and it sounds even when your phone is on silent, just like the real alarm. No more guessing whether it'll wake you.
• Cleaner crew sharing and a better-framed Logbook map.
• Rock-solid setup — onboarding now loads instantly and works fully offline, so you can get ready even without a signal.
• Plus fixes and refinements to keep your anchor watch running smoothly.

### 2.1.2 — 2026-07-13

This update strengthens the anchor watch's safety net and makes anchor setup faster.

Fixed crew notifications not reliably reaching iPhones during a drag alert.
Improved detection when GPS signal drops during a watch, both on your phone and for anyone watching remotely.
Added a "Test the alarm" button so you can hear and feel the alarm anytime, without ending your watch.
Redesigned rode and depth entry in Point & Set with smooth, tactile scroll wheels — no keyboard needed.
Faster, smoother compass dial when setting your anchor position.
Various reliability and stability improvements.

### 2.1.1 — 2026-06-14

• More accurate anchor setup: drop and arm now reliably use your true position.
• Fewer false alarms from GPS drift while at anchor.
• Instant, offline-ready interface: icons and text load right away, even with no signal.
• Improved low-battery warnings (refresh on reopen, now dismissible).
• Shared watch links now lead to the App Store, plus a one-tap share prompt after a notable watch.
• Fixed screens that could get stuck loading, and gave the widget a calmer color scheme.

Thanks for using AnchorBase.

### 2.1 — 2026-06-12

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-31.*