# Ruler+ Utility vs Sophi

The clearest difference is in-app purchases: Sophi at none against Ruler+ Utility's 1. Sophi also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 40 months). Ruler+ Utility's advantage is iOS requirement (13.0 vs 17.0). On price and device support there is nothing between them.

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

Ruler+ Utility ships an update every 40 months, Sophi every 3 weeks. The most recent releases landed on October 14, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Ruler+ Utility | Sophi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/ruler-plus-utility/id1017729457/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 46.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 40 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 41 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kyungjin Lee](https://appshunter.io/developer/572393811) | [Ikatech Solutions](https://appshunter.io/developer/1652070810) |

## What reviewers say

### Ruler+ Utility

[App page](https://appshunter.io/ios/app/ruler-plus-utility/id1017729457)

Transform your smartphone into a versatile measuring tool. Instantly measure the length of objects using your phone's screen, with options for fixed or scroll modes. Save your measurements and choose between centimeters or inches for precise results.

**Highlights:** Smartphone ruler, Fixed and scroll measurement modes, Save measurements, Centimeter and inch support, Fine-tune scale, Intuitive interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Sophi

[App page](https://appshunter.io/ios/app/sophi/id6738584574)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ruler+ Utility free?

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

### Is Sophi free?

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

### Do Ruler+ Utility or Sophi have ads?

Ruler+ Utility shows ads; Sophi does not.

### Which is updated more often, Ruler+ Utility or Sophi?

Ruler+ Utility ships an update every 40 months, and Sophi every 3 weeks. Most recently, Ruler+ Utility was updated on October 14, 2026 and Sophi on September 18, 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.*