# Screen Ruler vs Maindrop

The clearest difference is in-app purchases: Maindrop at none against Screen Ruler's 2. Maindrop also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Screen Ruler sells 2 one-off in-app purchases. Maindrop asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Screen Ruler | Maindrop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (26 ratings)](https://appshunter.io/ios/app/screen-ruler-measure-length/id1174757735/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 54.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 6 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [向阳 杨](https://appshunter.io/developer/1174757734) | [Atlas Engion SL](https://appshunter.io/developer/1809833713) |

## What reviewers say

### Screen Ruler

[App page](https://appshunter.io/ios/app/screen-ruler-measure-length/id1174757735)

Turn your iPhone or iPad into a precise measuring tool. Easily measure lengths in centimeters or inches with features like magnifier mode and haptic feedback. Ideal for daily tasks, office use, DIY projects, and on-the-go measurements.

**Highlights:** Dual units (cm/inches), Precision calibration, Magnifier mode, Haptic feedback, Clean interface, Save and label measurements

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ads-free experience | $1.99 | one-time |
| Support for a cup of coffee | $2.99 | one-time |


### Maindrop

[App page](https://appshunter.io/ios/app/maindrop/id6744902681)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Screen Ruler free?

Screen Ruler is free to download, with in-app purchases available.

### Is Maindrop free?

Maindrop is free to download, with no in-app purchases.

### Do Screen Ruler or Maindrop have ads?

Screen Ruler shows ads; Maindrop does not.

### Which is updated more often, Screen Ruler or Maindrop?

Screen Ruler ships an update every 3 months, and Maindrop every 3 months. Most recently, Screen Ruler was updated on October 26, 2026 and Maindrop on October 28, 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.*