Comparison

Image Ruler vs ONETILL

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

ONETILL

Features
Read full description

ONETILL helps you focus on what matters — one task, one moment, one streak. Set a single intention, block distractions, and stay committed until it’s done. ONETILL turns focus into a habit, not a struggle. Why ONETILL? • Focus on one task at a time • Block distracting apps while you work • Build and track your daily streak • Protect your progress with Streak Freeze • Clean, minimal, distraction-free design Progress doesn’t come from doing more. It comes from finishing what matters. ONETILL. One task. Till it’s done. End User License Agreement (EULA) ONETILL: https://docs.google.com/document/d/1cdQdAgNzJblhi1nog_zWXmjD9d-Ugw9yg8YLlD7V_CI/edit?usp=sharing

Screenshots

Image Ruler4 screens
ONETILL4 screens

Verdict

The call

The clearest difference is ads: ONETILL at none against Image Ruler's shown. Image Ruler's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (15.1 vs 26.2). On price, 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. Image Ruler sells 5 one-off in-app purchases and ONETILL sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Image Ruler ships an update every 3 weeks, ONETILL every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Image Ruler versus ONETILL: the parameters behind the verdict, then further details
ParameterImage RulerONETILL
PriceFreeFree
Rating1.6 (45 ratings) — better—
Positive reviews17.6% of reviews—
Number of ratings45 — better—
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better26.2
Further details — not scored
Size47 MB5 MB
Age rating4+4+
DeveloperMartin SchurmannSteve Winter

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
4 purchases

ONETILL

Subscriptions1
  • ONETILL Pro Monthly$0.991 Month
One-time3
  • Streak Freeze$1.99
  • App Blocker$2.99
  • Pro LifeTime$19.99

Questions

Is Image Ruler free?
Image Ruler is free to download, with in-app purchases available.
Is ONETILL free?
ONETILL is free to download, with in-app purchases available.
Do Image Ruler or ONETILL have ads?
Image Ruler shows ads; ONETILL does not.
Which is updated more often, Image Ruler or ONETILL?
Image Ruler ships an update every 3 weeks, and ONETILL every 2 months. Most recently, Image Ruler was updated on October 24, 2026 and ONETILL on October 25, 2026.

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