# Caliper Calculator vs Pocket,Ruler

The clearest difference is ads: Caliper Calculator at none against Pocket,Ruler's shown. Caliper Calculator also leads on iOS requirement (8.0 vs 16.6). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Caliper Calculator ships an update every 9 days, Pocket,Ruler fortnightly. The most recent releases landed on November 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Caliper Calculator | Pocket,Ruler |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Fortnightly |
| Size | 12 MB | 6 MB |
| Requires iOS | **8.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Manfred Pilhar](https://appshunter.io/developer/662990787) | [旭 王](https://appshunter.io/developer/1536252900) |

## What reviewers say

### Caliper Calculator

[App page](https://appshunter.io/ios/app/caliper-calculator/id1053038909)

**In-app purchases:** none


### Pocket,Ruler

[App page](https://appshunter.io/ios/app/pocketruler/id6741355487)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Caliper Calculator free?

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

### Is Pocket,Ruler free?

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

### Do Caliper Calculator or Pocket,Ruler have ads?

Pocket,Ruler shows ads; Caliper Calculator does not.

### Which is updated more often, Caliper Calculator or Pocket,Ruler?

Caliper Calculator ships an update every 9 days, and Pocket,Ruler fortnightly. Most recently, Caliper Calculator was updated on November 2, 2026 and Pocket,Ruler on October 6, 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.*