# Screen Ruler vs PolyPro

The clearest difference is in-app purchases: PolyPro at none against Screen Ruler's 2. PolyPro also leads on ads (none vs shown) and update cadence (every 2 days vs every 3 months). Screen Ruler's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 26.4). On price there is nothing between them.

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

Screen Ruler ships an update every 3 months, PolyPro every 2 days. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Screen Ruler | PolyPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (25 ratings)](https://appshunter.io/ios/app/screen-ruler-measure-length/id1174757735/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 54.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 5 MB |
| Requires iOS | **15.0** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [向阳 杨](https://appshunter.io/developer/1174757734) | [Bencapsulate Designs](https://appshunter.io/developer/451954064) |

## 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 |


### PolyPro

[App page](https://appshunter.io/ios/app/polypro/id6770562114)

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

**In-app purchases:** none


## Frequently asked questions

### Is Screen Ruler free?

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

### Is PolyPro free?

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

### Do Screen Ruler or PolyPro have ads?

Screen Ruler shows ads; PolyPro does not.

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

Screen Ruler ships an update every 3 months, and PolyPro every 2 days. Most recently, Screen Ruler was updated on October 24, 2026 and PolyPro on October 7, 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.*