# Ruler vs SoftKey

The clearest difference is in-app purchases: SoftKey at none against Ruler's 1. SoftKey also leads on iOS requirement (13.0 vs 15.1). Ruler's advantage is update cadence (monthly vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Ruler sells 1 one-off in-app purchase. SoftKey asks for nothing beyond the download.

Ruler ships an update monthly, SoftKey every 4 months. The most recent releases landed on October 5, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Ruler | SoftKey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 4 months |
| Size | 90 MB | 27 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [xita apps](https://appshunter.io/developer/1461041968) | [ENTRYPHONE COMPANY LIMITED(THE)](https://appshunter.io/developer/1179069245) |

## What reviewers say

### Ruler

[App page](https://appshunter.io/ios/app/ruler-measuring-tape/id1639869883)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove_Ads_Show_History | $4.99 | one-time |


### SoftKey

[App page](https://appshunter.io/ios/app/softkey/id6759150334)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ruler free?

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

### Is SoftKey free?

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

### Do Ruler or SoftKey have ads?

Both Ruler and SoftKey show ads.

### Which is updated more often, Ruler or SoftKey?

Ruler ships an update monthly, and SoftKey every 4 months. Most recently, Ruler was updated on October 5, 2026 and SoftKey on October 9, 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.*