Comparison

Image Ruler vs Advisory Notices

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

Head to head
About

Image Ruler

This app allows you to measure objects directly on photos. Simply take a picture, mark a known object for reference, and then draw measurements on other items within the same image. It supports both metric and imperial units and offers intuitive editing tools.

Highlights
  • Measure objects on photos
  • Use a known object as a reference
  • Supports metric and imperial units
  • Intuitive editing interface
  • Organize photos easily
  • Zoom for precision
Features
Read full description

Measure anything in any photo. Take a photo or import one from your library, place a reference object you already know the size of, and instantly calculate real-world measurements — lengths, angles, and areas — directly on the image. How it works Set a reference line on a known object in your photo. From there, every measurement you draw is automatically calculated in real scale. What you can measure Ruler — measure distances and lengths Arrow — annotate with directional measurements Angle — measure the angle between any two lines Area — tap points to outline a surface and calculate its area Built for precision Works entirely offline — no internet required Metric and imperial units Pinch to zoom for precise point placement Undo and redo any change Hide or show your reference line at any time Tips for accurate results For best accuracy, make sure your reference object and the object you're measuring are in the same plane, and that the camera was parallel to both when the photo was taken. Perspective distortion affects results. Measurements are estimates based on the reference you provide.

About

Advisory Notices

Read full description

The centralised platform allows vessels and managers to view and distribute advisory notices, covering multiple Flag States and Classification Societies. Management companies can upload company or fleet-specific notices, and an alert system notifies users when new notices are available. Users can view the notices or access their sources, pin notices for easy future reference, and feed advisory notices into the Maritime Accident Investigation Reports for the Management Report application, which in turn connects to the Ephemeris Safety Committee Meeting application. The application is free to download, but requires a subscription to access its features. Included in the Subscription: Centralised Notice Management: - View and distribute advisory notices across multiple Flag States and Classification Societies. Customised Notice Uploads: - Management companies can upload company or fleet-specific notices. Notification System: - Receive alerts for newly available notices. Notice Viewing and Accessibility: - Access notices and their sources directly. - Pin important notices for easy future reference. Integration with Other Applications: - Feed advisory notices into the Maritime Accident Investigation Reports for the Management Report application. - Connect notices to the Ephemeris Safety Committee Meeting application. For terms of use see https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Image Ruler4 screens
Advisory Notices4 screens

Verdict

The call

The clearest difference is ads: Advisory Notices at none against Image Ruler's shown. Image Ruler's advantage is device support (3 vs 1). On price, update cadence, in-app purchases and iOS requirement 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. Image Ruler sells 5 one-off in-app purchases and Advisory Notices sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Image Ruler ships an update every 3 weeks, Advisory Notices every 6 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
Image Ruler versus Advisory Notices: the parameters behind the verdict, then further details
ParameterImage RulerAdvisory Notices
PriceFreeFree
Rating1.6 (45 ratings) — better—
Positive reviews17.6% of reviews—
Number of ratings45 — better—
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better16.0
Further details — not scored
Size47 MB75 MB
Age rating4+4+
DeveloperMartin SchurmannEphemeris

In-app purchases

5 purchases

Image Ruler

One-time5
  • imageRulerPro$0.99
  • Small Tip2 variants$0.99
  • Medium Tip2 variants$2.99
Show 2 more
  • Big Tip$4.99
  • Big tip$4.99
2 purchases

Advisory Notices

Subscriptions2
  • Monthly6 Months trial$8.991 Month
  • Yearly6 Months trial$89.991 Year

Questions

Is Image Ruler free?
Image Ruler is free to download, with in-app purchases available.
Is Advisory Notices free?
Advisory Notices is free to download, with in-app purchases available.
Do Image Ruler or Advisory Notices have ads?
Image Ruler shows ads; Advisory Notices does not.
Which is updated more often, Image Ruler or Advisory Notices?
Image Ruler ships an update every 3 weeks, and Advisory Notices every 6 weeks. Most recently, Image Ruler was updated on November 3, 2026 and Advisory Notices on October 30, 2026.

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