# Screen Ruler vs Pipe Math Pro

The clearest difference is price: Screen Ruler at Free against Pipe Math Pro's $9.99. Screen Ruler also leads on update cadence (every 3 months vs every 10 months) and device support (3 vs 1). Pipe Math Pro's advantage is in-app purchases (none vs 2) and ads (none vs shown).

Screen Ruler is free to download; Pipe Math Pro costs $9.99 up front. Screen Ruler sells 2 one-off in-app purchases. Pipe Math Pro asks for nothing beyond the download.

Screen Ruler ships an update every 3 months, Pipe Math Pro every 10 months. The most recent releases landed on October 17, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Screen Ruler | Pipe Math Pro |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[3.7 (24 ratings)](https://appshunter.io/ios/app/screen-ruler-measure-length/id1174757735/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 54.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 4 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [向阳 杨](https://appshunter.io/developer/1174757734) | [Antonio Vitella](https://appshunter.io/developer/1797587730) |

## 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 |


### Pipe Math Pro

[App page](https://appshunter.io/ios/app/pipe-math-pro/id6742253582)

**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 Pipe Math Pro free?

Pipe Math Pro costs $9.99, with no in-app purchases.

### Do Screen Ruler or Pipe Math Pro have ads?

Screen Ruler shows ads; Pipe Math Pro does not.

### Which is updated more often, Screen Ruler or Pipe Math Pro?

Screen Ruler ships an update every 3 months, and Pipe Math Pro every 10 months. Most recently, Screen Ruler was updated on October 17, 2026 and Pipe Math Pro on October 5, 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.*