# Anchor Alert — The Anchor App you can Trust! > Boat anchor monitoring and marine weather forecasting app. (iPhone/iPad app by PredictWind Limited.) - Source: https://appshunter.io/ios/app/anchor-alert/id1628786449 (this page in markdown: same URL + `.md`) - Developer: [PredictWind Limited](https://appshunter.io/developer/477048590) - Category: Navigation, Weather - Price: Free with in-app purchases - Rating: 4.60/5 from 10 App Store ratings · 66 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 174 MB - Languages: American English - Released: 2023-03-28 - Data updated: 2026-08-31 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/anchor-alert/id1628786449/reviews.md ## What is Anchor Alert? Get the best and newest Anchor App developed by the trusted world leaders in marine forecasting - PredictWind Monitor your boat from anywhere on your phone. Set alerts & monitor your boat at anchor, view live N2K data and weather forecasts, on or off the boat. Customise your alerts, then relax knowing your boat is in good hands, with Anchor Alert. * Monitor your Anchor and Boat Position - Set your anchor position and preferences in quick or advanced mode, then monitor your vessel and position history on the map. Can be used with just your Phone or connected to your N2K backbone and a PredictWind DataHub. * 3 Modes, Simple, Advanced or Datahub linked - Use Simple Mode to quickly drag the anchor into position and set a safe radius. Advanced allows you to manually enter data for increased accuracy. DataHub Link reads your N2K data and fills in the relevant info, then input how much chain you’ve let out, and you’re done! * Set Up Alerts - Use our preset alerts or customise your own real-time and forecast alerts. The DataHub allows Anchor Alert to read your boat’s N2K network and alert you when conditions move outside your specified safe limits. * Works On & Off The Boat - Monitor your vessel and receive alerts onboard via the DataHub’s Wi-Fi network, or head ashore and stay connected over your vessel's existing internet connection. The DataHub is compatible with the Iridium GO! exec and other satellite connections to keep you connected literally anywhere on earth. * Get PredictWind Weather forecasts - Know exactly what weather is headed your way, with highly accurate marine forecasts by PredictWind. View world-leading weather data with Daily Briefing, Tables and Graphs. * Find the best spots to Anchor with Local Knowledge - See anchorage ratings and reviews from other users to get the top tips and advice. Leave your Boat in Good hands with Anchor Alert by PredictWind. Terms & Conditions: The Anchor Alert App is not error or bug free. You agree to use the Anchor Alert App carefully and at your own risk. We disclaim all representations and warranties of any kind, expressed or implied, including, without limitation, the warranties of merchantability and fitness for a particular purpose. We are not liable for damages, direct or consequential, resulting from your use of the Anchor Alert App. You agree to defend, indemnify and hold us harmless from any claims, losses, liability costs and expenses (including, but not limited to, legal fees) arising from any such use. You acknowledge that you have only a limited, non-exclusive, non-transferable license to use the Anchor Alert App. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.predictwind.com/about-us/privacy-policy/ ## Key features - Anchor and boat position monitoring - Customizable real-time and forecast alerts - N2K DataHub integration - PredictWind marine weather forecasts - Local anchorage knowledge and reviews - Works on and off the boat ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Anchor Pro 3 monthly | $29.00 | per 3 months | | Anchor Pro Yearly | $99.00 | per year | | Anchor Pro 1 monthly | $15.00 | per month | ## Recent user reviews (10 of 66) All indexed reviews: https://appshunter.io/ios/app/anchor-alert/id1628786449/reviews.md ### 5/5 — Great App *2026-08-17, version 2.0.5* Does exactly what it’s supposed to do- I highly recommend this app for any boaty 👌 ### 5/5 — Does what it promises *2026-08-13, version 2.0.5* Using this we now sleep better at night knowing we will be woken by the alarm if necessary. ### 5/5 — Easy to use & peace of mind *2026-08-12, version 2.0.5* Super easy to set up and the fact we can get alerts when away from the boat has been a game changer. Also helpful that the alerts can be customized. Definitely feel more at ease when ashore! ### 5/5 — Love it! *2026-08-12, version 2.0.5* I feel safe knowing the app is watching my boat. With many alert options, I know I’ll never miss an important warning. Great peace of mind! ### 5/5 — Super application *2026-08-12* Cette application est très utile. Je la recommande **Developer response:** Bonjour ! C'est formidable d'entendre que vous trouvez l'Anchor Alert app utile et recommandable ! Merci infiniment pour vos commentaires positifs ! ⚓️ - PredictWind Support Team ### 5/5 — Excellent app *2026-08-12, version 2.0.5* We highly recommend PWs Anchor alert. It’s user-friendly and gives peace of mind. It accurately tracks movement and eliminates stressful false alarms, making it easy to get a good night's sleep ### 5/5 — Great App *2026-08-12, version 2.0.5* Great app, especially the Datahub NMEA connection and boat data that you can see. Very cool and great peace of mind when off the boat. ### 5/5 — Simple security *2026-08-12, version 2.0.5* My new go to app for anchoring. Simple to setup and easy to use, the alerts work even when my phone is out on silent . I haven’t seen others do that ### 5/5 — Sleep easy *2026-08-12, version 2.0.5* With the Anchor Alert App & Datahub combined I rest easy and fully trust that if the anchor moves I’ll know about it. A reliable anchor is one thing but combined with the Anchor Alert my trust is next level which makes me sleep easy at night. No more anchor drag nightmares. ### 5/5 — Newport boater *2026-08-11, version 2.0.5* This is new for me, so far I’m enjoying every aspect that this app offers when it comes to peace of mind at anchor. There’s so many great features that I’m excited to keep working with. ## Frequently asked questions about Anchor Alert ### What does Anchor Alert do? Anchor Alert allows you to monitor your boat's position and anchor status from anywhere using your phone. It provides customizable alerts for anchor drift and changing weather conditions, and integrates with marine weather forecasts. ### How does Anchor Alert monitor my boat? You can set your anchor position and a safe radius on a map. The app then monitors your vessel's position relative to this radius. It can be used with just your phone, or connected to your boat's N2K backbone and a PredictWind DataHub for more advanced data. ### What kind of alerts can I set? You can set up preset or custom real-time and forecast alerts. If your boat moves outside of your specified safe limits, or if conditions change significantly, you will be notified. The DataHub can read your boat's N2K network to trigger these alerts. ### Can I use Anchor Alert when I'm not on my boat? Yes, Anchor Alert is designed to work both on and off the boat. You can monitor your vessel and receive alerts onboard via the DataHub's Wi-Fi network, or stay connected over your vessel's existing internet connection when you are ashore. ### Is Anchor Alert free to use? The app is available for free download, but it offers in-app purchases. These purchases likely unlock advanced features or services, such as access to premium weather data or enhanced monitoring capabilities. ## Version history (last 5 releases) ### 2.0.6 — 2026-08-22 Minor changes to setup screens. ### 2.0.5 — 2026-08-11 New in this version: - Anchor Set Preference 'Advanced' is now 'DataHub' - Default settings for 'DataHub' setup IMPORTANT: Anchor Alert Pro requires DataHub Firmware 4.54 or later. To update your DataHub / DataHub Pro Firmware to 4.54: 1. Go to Services > Settings > Software Updates 2. Click the CHECK button. 3. Follow the prompts to complete the Firmware update. **Anchor Alert Pro Setup Notes** - If you are prompted to update to 4.52, do this first, wait 15 minutes, then reconnect to DataHub Wi-Fi and update your DataHub firmware again. - Ensure the DataHub / DataHub Pro remains powered on. A power loss during a firmware update will permanently damage your DataHub. - If you are updating Anchor Alert on your iPhone or iPad, and your current version is older than version 2.0.3, delete the app and reinstall it. ### 2.0.4 — 2026-08-10 IMPORTANT: To use this version of Anchor Alert required DataHub Firmware 4.53 or later. 1. To update your DataHub / DataHub Pro Firmware: - Go to Services > Settings > Software Updates - Click the ALTERNATE button. - Select 4.53 or later from the drop-down list. - Follow the prompts to complete the Firmware update. IMPORTANT: Ensure the DataHub / DataHub Pro remains powered on. A power loss during a firmware update will permanently damage your DataHub. 2. If Anchor Alert is already installed on your device and it is older than version 2.0.3, delete and reinstall the app before using it. ### 2.0.3 — 2026-08-04 IMPORTANT: 1. Delete the Anchor Alert app from your device first, then reinstall this new version. 2. Update your DataHub or DataHub Pro to firmware version 4.53, found here: Settings > Software Updates > Alternate > 4.53 Some of the things we have been working on are 1. Easier login with Apple, Google and Facebook. Existing users should select Continue with Email. If using Apple, share your real email address so we can link your existing PredictWind account. 2. Faster, simpler installation and setup. 3. More reliable Critical Alert sounds, including when the phone is in Silent Mode, Do Not Disturb, or the volume is set to zero. 4. More reliable communication between the app and DataHub. 5. Clearer and more complete Alert Detail History. 6. Change alert settings without restarting the session when connected to DataHub Wi-Fi or boat Wi-Fi. 7. Zoom controls when setting the anchor position. 8. Standard and Hybrid map views, as well as Satellite. Hybrid is great if you're coastal. Chain rode lengths up to 500 metres. 8. AIS proximity alerts. 9. Minimum and maximum depth alerts. 10. Improvements to the free-user experience. 11. Improved breadcrumb tracking. Unfortunately, to make way for all these improvements, we have had to temporarily remove the "Use Last Known Anchor Position" and "Edit Chain Rode" features. If you used those frequently, we suggest two workarounds: 1. Use Last Anchor Position - set a waypoint on your chartplotter when dropping the anchor. If you need to restart monitoring, start the session, then tap the Anchor > Tap to Edit and use Custom Coordinates to re-enter the Anchor Position from your marked waypoint. 2. Edit Chain Rode - Edit the Anchor Drag alert radius to add on the same amount of extra anchor chain. ### 2.0.2 — 2026-04-22 ACTION REQUIRED: Update your DataHub Pro firmware to version 4.50 BEFORE updating this app to ensure it connects correctly. What's new in Anchor Alert 2.0.2 This update delivers significantly more reliable DataHub connections, clearer on-screen guidance when things go wrong, and easier sign-in for new users. New Features - Easier sign-in: New users can now sign in with Google, Apple, or Facebook — no separate password to remember. Existing users: tap "Continue with Email" and use your PredictWind account credentials. - Clearer connection status: The radio waves icon (top-left of the Anchor Map) now turns green only when the app is fully connected to the DataHub AND receiving live NMEA data. If login fails, a clear error message is shown. Allow up to 10 seconds for the icon to turn green after opening the app. Improvements & Fixes - Connection reliability: Improved stability when starting and stopping alert sessions, including faster recovery from dropped connections. A new Connect button on the Anchor Map makes it quick to reconnect after a Wi-Fi or password issue. - Session persistence: The app now automatically resumes your session when reopened — even after a force-close, reboot, or phone restart. - N2K data improvements: Wind speed (TWS) conversion fixed and buffer reduced for faster sync with your chartplotter. Auto-refresh every 60 seconds has been added in Remote Mode on the Anchor Map and Dashboard pages. - Drag Alert: Fixed a unit conversion error affecting metric-to-imperial radius calculations. - Clearer error messages: Error messages now explain on-boat and off-boat states more clearly, with Retry buttons added to login and cancel failure prompts. - Remote Mode: Alert Settings are locked when you're away from the boat, with a clear explanation displayed in the app. - Alert display: Fixed text errors in alert messages and the Alert History detail view. - Security: App credentials are now stored securely in the iOS Keychain. - UI polish: Larger tap targets on the "Tap to Edit" screen to reduce mis-taps; Anchor Custom Coordinates updated to handle edge cases correctly. - App stability: Resolved rare crash conditions. Coming in the Next Update - We're actively working on these for the next release: - Wind Direction Alert is not working in this version due. - Enabling or disabling an alert type while a session is active does not work. As a workaround, stop your current session and start a new one to add alert types (e.g. Depth). Changing the value of an active alert (e.g. adjusting depth from 10m to 14m) works as normal. - False alerts when Wi-Fi drops: If the app loses connection to the DataHub while your phone is connected to any Wi-Fi network, it may temporarily fall back to phone GPS and generate false Drag or Swing alerts. To resolve: reconnect your device to Wi-Fi, and the false alerts will stop. ## Apps similar to Anchor Alert | App | Rating | Price | Category | | --- | --- | --- | --- | | [B&G: Companion App for Sailors](https://appshunter.io/ios/app/b-and-g-companion-app-for-sailors/id1477846822) | 4.0 (374) | Free | Navigation | | [Memory-Map for All](https://appshunter.io/ios/app/memory-map-for-all/id1601873836) | 4.9 (10) | Free | Navigation | | [Anchor Alarm / Watch](https://appshunter.io/ios/app/anchor-alarm-watch/id1428485893) | 4.7 (801) | Free | Navigation | | [Anchor Alarm: ZENKOU PRO](https://appshunter.io/ios/app/anchor-alarm-zenkou-pro/id1568849324) | 4.5 (174) | Free | Navigation | | [Aqua Map Boating](https://appshunter.io/ios/app/aqua-map-boating/id919552329) | 4.7 (13,587) | Free | Navigation | | [Sail Fiji Cruising Guide](https://appshunter.io/ios/app/sail-fiji-cruising-guide/id1255708791) | 4.2 (26) | $49.99 | Navigation | ## More apps by PredictWind Limited - [PredictWind — Marine Forecasts](https://appshunter.io/ios/app/predictwind-marine-forecasts/id477048487) - [PredictWind Race Tracker](https://appshunter.io/ios/app/predictwind-race-tracker/id569052528) - [PredictWind Offshore Weather](https://appshunter.io/ios/app/predictwind-offshore-weather/id1068677891) - [AIS Explorer](https://appshunter.io/ios/app/ais-explorer/id1670774413) - [PredictChat](https://appshunter.io/ios/app/predictchat/id6448483269) All apps by PredictWind Limited: https://appshunter.io/developer/477048590 --- *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 2026-08-31.*