# Image Ruler vs ONETILL

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.

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.

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.

## The numbers

| Metric | Image Ruler | ONETILL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.6 (45 ratings)](https://appshunter.io/ios/app/image-ruler-measures/id1474481911/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 17.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 47 MB | 5 MB |
| Requires iOS | **15.1** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Martin Schurmann](https://appshunter.io/developer/1469819101) | [Steve Winter](https://appshunter.io/developer/1868001153) |

## What reviewers say

### Image Ruler

[App page](https://appshunter.io/ios/app/image-ruler-measures/id1474481911)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| imageRulerPro | $0.99 | one-time |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Big Tip | $4.99 | one-time |
| Big tip | $4.99 | one-time |


### ONETILL

[App page](https://appshunter.io/ios/app/onetill/id6758265955)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ONETILL Pro Monthly | $0.99 | per month |
| Streak Freeze | $1.99 | one-time |
| App Blocker | $2.99 | one-time |
| Pro LifeTime | $19.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*