# Ultra Precision Compass vs Mini Altimeter

The clearest difference is ads: Mini Altimeter at none against Ultra Precision Compass's shown. Mini Altimeter also leads on update cadence (every 6 days vs every 4 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Ultra Precision Compass ships an update every 4 weeks, Mini Altimeter every 6 days. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Ultra Precision Compass | Mini Altimeter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 weeks | **Every 6 days** |
| Size | 100 MB | 3 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [주식회사 강남토끼](https://appshunter.io/developer/1860442522) | [Woodenshark LLC](https://appshunter.io/developer/1236101386) |

## What reviewers say

### Ultra Precision Compass

[App page](https://appshunter.io/ios/app/ultra-precision-compass/id6796186415)

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

**In-app purchases:** none


### Mini Altimeter

[App page](https://appshunter.io/ios/app/mini-altimeter/id6804417354)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Ultra Precision Compass free?

Ultra Precision Compass is free to download, with no in-app purchases.

### Is Mini Altimeter free?

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

### Do Ultra Precision Compass or Mini Altimeter have ads?

Ultra Precision Compass shows ads; Mini Altimeter does not.

### Which is updated more often, Ultra Precision Compass or Mini Altimeter?

Ultra Precision Compass ships an update every 4 weeks, and Mini Altimeter every 6 days. Most recently, Ultra Precision Compass was updated on October 3, 2026 and Mini Altimeter on October 2, 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.*