# UMi Mount vs Zenith Annotation

The clearest difference is in-app purchases: UMi Mount at none against Zenith Annotation's 2. UMi Mount also leads on iOS requirement (12.0 vs 15.0). Zenith Annotation's advantage is update cadence (daily vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Zenith Annotation sells 2 in-app purchases, starting at $24.99 per year. UMi Mount asks for nothing beyond the download.

UMi Mount ships an update every 4 months, Zenith Annotation daily. Both last shipped on October 6, 2026.

## The numbers

| Metric | UMi Mount | Zenith Annotation |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Size | 46 MB | 47 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [昊刚 李](https://appshunter.io/developer/1687019696) | [Eduardo Martinez Gomez](https://appshunter.io/developer/6790600757) |

## What reviewers say

### UMi Mount

[App page](https://appshunter.io/ios/app/umi-mount/id6503953666)

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

**In-app purchases:** none


### Zenith Annotation

[App page](https://appshunter.io/ios/app/zenith-annotation/id6816010913)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annotation Studio with Trial | $24.99 | per year |
| Annotation Studio Annual | $24.99 | per year |


## Frequently asked questions

### Is UMi Mount free?

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

### Is Zenith Annotation free?

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

### Do UMi Mount or Zenith Annotation have ads?

Neither UMi Mount nor Zenith Annotation shows ads.

### Which is updated more often, UMi Mount or Zenith Annotation?

UMi Mount ships an update every 4 months, and Zenith Annotation daily. Most recently, UMi Mount was updated on October 6, 2026 and Zenith Annotation 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.*