# Super Ruler vs Calipers Tape Measure

The clearest difference is price: Super Ruler at Free against Calipers Tape Measure's $1.99. Super Ruler also leads on iOS requirement (11.0 vs 17.0). Calipers Tape Measure's advantage is ads (none vs shown) and update cadence (every 3 months vs every 109 months). On in-app purchases and device support there is nothing between them.

Super Ruler is free to download; Calipers Tape Measure costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Super Ruler ships an update every 109 months, Calipers Tape Measure every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Super Ruler | Calipers Tape Measure |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[4.3 (26 ratings)](https://appshunter.io/ios/app/calipers-tape-measure/id6445826923/reviews)** |
| Number of ratings | — | **26** |
| Positive reviews | — | 77.8% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 109 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 8 MB | 6 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hany Elmehy](https://appshunter.io/developer/959484887) | [Jacob Parker](https://appshunter.io/developer/1153284524) |

## What reviewers say

### Super Ruler

[App page](https://appshunter.io/ios/app/super-ruler/id1182697242)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calipers Tape Measure

[App page](https://appshunter.io/ios/app/calipers-tape-measure/id6445826923)

Measure objects of any size with your phone. Features a 5-meter tape measure for larger items and a precision caliper mode for measuring small objects down to a tenth of a millimeter. Offers highly accurate readings tested across various devices and settings.

**Highlights:** 5-meter tape measure, Precision caliper mode, Measure to 0.1mm accuracy, Spirit level functionality, Accurate measurement testing

**In-app purchases:** none


## Frequently asked questions

### Is Super Ruler free?

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

### Is Calipers Tape Measure free?

Calipers Tape Measure costs $1.99, with no in-app purchases.

### Do Super Ruler or Calipers Tape Measure have ads?

Super Ruler shows ads; Calipers Tape Measure does not.

### Which is updated more often, Super Ruler or Calipers Tape Measure?

Super Ruler ships an update every 109 months, and Calipers Tape Measure every 3 months. Most recently, Super Ruler was updated on November 2, 2026 and Calipers Tape Measure on November 3, 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.*