Comparison

Anchor Alarm vs Protractor for Angle Measuring

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Anchor Alarm

This app provides real-time updates on your anchor's location and sends instant notifications if it drifts beyond set parameters. It offers detailed stay analysis, location tracking, and a history of anchoring trips, all within a user-friendly interface.

Highlights
  • Real-time anchor location updates
  • Instant drift notifications
  • Customizable distance and time settings
  • Detailed anchor stay analysis
  • Location history tracking
  • Anchor trip history
  • User-friendly interface
Features
Read full description

Ensure Your Peace of Mind with the Ultimate Anchor Alarm Dropping the anchor shouldn't mean dropping your guard. When you are resting in a quiet bay or navigating unpredictable offshore currents, you need an anchor monitoring app you can trust with your life and your vessel. Welcome to the most modern, reliable, and battery-efficient boat anchor tracker designed for sailors, yacht owners, and maritime enthusiasts. Why We Are the Modern Alternative: Legacy apps often suffer from complex interfaces, map loading errors, and most dangerously, background process failures. We built this gps anchor watch from the ground up using the latest iOS technologies to ensure your boat alarm never goes to sleep when you do. No more waking up to a closed app. This is the yacht anchor system you’ve been waiting for. Key Features That Keep You Safe: Precision Anchor Track & Setting: Set your exact anchor location with a single tap. The highly accurate anchor pointer draws a precise geofence (safety radius) around your boat. It’s the easiest boat mooring app you will ever use. Instant Anchor Drift Alarm: Receive immediate, unmissable notifications if your boat drags outside the safety zone. Our anchor position alarm is designed to wake you up immediately, giving you crucial seconds to react to changing winds or tides. 100% Reliable Background Monitoring: Your vessel anchor monitor runs flawlessly in the background. Even if your screen is locked, the anchor drop alert and tracking remain fully active without draining your battery unnecessarily. Real-Time Anchor Tracking: Visualize your boat’s movement history directly on a fluid, modern map. The yacht anchor track helps you understand how wind and current are affecting your boat over time. Smart Mooring Alert: Not just for anchoring out! Use the mooring tracker to ensure your dock lines or mooring ball hold strong during storms or heavy weather nights. Built for Every Type of Vessel: Whether you need a heavy-duty yacht anchor monitor for a large catamaran, a reliable nautical anchor system for offshore sailing, or a simple digital anchor watch for weekend fishing trips, this app scales perfectly to your needs. It outperforms standard tools by offering a highly responsive, modern user interface. Your Dedicated Ocean Watch: Don't leave your boat's safety to chance. From setting the perfect perimeter with a quick anchor setting alarm to receiving a critical marine anchor watch notification, every feature is engineered for your safety. Join the growing community of sailors who trust our smart anchor alert to protect their most valuable asset. Download the ultimate boating anchor app today. Sleep soundly, knowing your boat is exactly where you left it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Protractor for Angle Measuring

Transform your iPhone into a precision angle measurement tool. Effortlessly assess angles in real-time using touch and camera modes, measure multiple angles simultaneously, and customize your tools for accuracy and simplicity. Ideal for quick, reliable on-the-go assessments.

Highlights
  • Real-time angle measurement
  • Touch and camera modes
  • Simultaneous measurement of unlimited angles
  • Plumb bob pendulum for tilt determination
  • Tool color customization
  • Measure angles in photos
Features
Read full description

Your pocket angle expert! Transform your iPhone into a precision tool for real-time angle measurement. Simply tap, snap, and assess angles effortlessly with our intuitive touch and camera modes. Measure unlimited angles simultaneously, customize tools, and enjoy the perfect blend of accuracy and simplicity. Ideal for architects or anyone seeking quick, reliable measurements. Embrace the power of Protractor for fast, on-the-go angle assessments! Key Features: • Touch Measure: Tap the screen to set angles (use the camera view). • Plumb Bob Pendulum: Perfect for determining tilt (calibrate for accuracy). • Angle Measurement in Photos and from Camera. • Simultaneous Measurement of Unlimited Angles. • Tool Color Customization for Visual Convenience. Privacy Policy: https://appliks.com/privacy-policy ​​Terms of Use: https://appliks.com/terms-of-use

Screenshots

Anchor Alarm4 screens
Protractor for Angle Measuring4 screens

Verdict

The call

The clearest difference is review sentiment: Anchor Alarm at 100% against Protractor for Angle Measuring's 48%. Anchor Alarm also leads on ads (none vs shown) and monetization model (free vs free with in-app purchases). Protractor for Angle Measuring's advantage is rating (4.5 vs 4.0) and ratings volume (1.1K vs 11). On price, update cadence, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Anchor Alarm sells 1 in-app purchase, starting at $2.99 per month and Protractor for Angle Measuring sells 5 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Protractor for Angle Measuring holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Protractor for Angle Measuring has 1.1K ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 100% of Anchor Alarm's written reviews are positive against 48% of Protractor for Angle Measuring's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Anchor Alarm ships an update every 2 weeks, Protractor for Angle Measuring every 3 weeks. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.

Scorecard6 real differences · 4 level
Anchor Alarm versus Protractor for Angle Measuring: the parameters behind the verdict, then further details
ParameterAnchor AlarmProtractor for Angle Measuring
PriceFreeFree
Rating4.0 (11 ratings)4.5 (1.1K ratings) — better
Positive reviews100.0% of reviews — better48.1% of reviews
Number of ratings111.1K — better
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better18.6
Further details — not scored
Size18 MB120 MB
Age rating4+4+
DeveloperSerdar PercinAppLiks Sp. z O.O.

Customer experience

Anchor Alarm

All ratings10 ratings
Positive80.0%
Neutral20.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Protractor for Angle Measuring

All ratings1,066 ratings
Positive88.6%
Neutral4.5%
Negative6.8%
Written reviews79 reviews
Positive48.1%
Neutral5.1%
Negative46.8%

Bugs and requests

Anchor Alarm

Not enough reviews yet to summarise bugs or requests.

Protractor for Angle Measuring

Reported bugs

2 issues
  • Protractor tool is hard to use and requires multiple tries
  • Angle measurements do not match real-world angles

Requested features

3 requests
  • Add more instructions and guidance for using the protractor tool
  • Improve the zoom functionality when measuring angles in photos
  • Enhance the accuracy of angle measurements

In-app purchases

1 purchases

Anchor Alarm

Subscriptions1
  • Premium7 Days trial$2.991 Month
5 purchases

Protractor for Angle Measuring

Subscriptions5
  • Weekly Access$0.997 Days
  • Weekly Access with Trial3 Days trial$1.997 Days
  • Weekly Access$1.997 Days
Show 2 more
  • Yearly Access$3.991 Year
  • Yearly Access$4.991 Year

Questions

Is Anchor Alarm free?
Anchor Alarm is free to download, with in-app purchases available.
Is Protractor for Angle Measuring free?
Protractor for Angle Measuring is free to download, with in-app purchases available.
Which has better reviews, Anchor Alarm or Protractor for Angle Measuring?
Protractor for Angle Measuring is rated higher. Anchor Alarm averages 4.0 out of 5 from 11 ratings, while Protractor for Angle Measuring averages 4.5 from 1.1K ratings.
Do Anchor Alarm or Protractor for Angle Measuring have ads?
Protractor for Angle Measuring shows ads; Anchor Alarm does not.
Which is updated more often, Anchor Alarm or Protractor for Angle Measuring?
Anchor Alarm ships an update every 2 weeks, and Protractor for Angle Measuring every 3 weeks. Most recently, Anchor Alarm was updated on November 3, 2026 and Protractor for Angle Measuring on November 12, 2026.

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