# Beyond MST Explorer vs Sleep Mate

The clearest difference is ads: Beyond MST Explorer at none against Sleep Mate's shown. Sleep Mate's advantage is update cadence (every 3 days vs every 27 months). 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.

Beyond MST Explorer ships an update every 27 months, Sleep Mate every 3 days. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Beyond MST Explorer | Sleep Mate |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 27 months | **Every 3 days** |
| Size | 158 MB | 88 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Palo Alto Veterans Institute for Research](https://appshunter.io/developer/1292950620) | [seongho park](https://appshunter.io/developer/6801357251) |

## What reviewers say

### Beyond MST Explorer

[App page](https://appshunter.io/ios/app/beyond-mst-explorer/id1610165151)

**Features:** Vision Pro support

**In-app purchases:** none


### Sleep Mate

[App page](https://appshunter.io/ios/app/sleep-mate-sleep-tracker/id6801357249)

**In-app purchases:** none


## Frequently asked questions

### Is Beyond MST Explorer free?

Beyond MST Explorer is free to download, with no in-app purchases.

### Is Sleep Mate free?

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

### Do Beyond MST Explorer or Sleep Mate have ads?

Sleep Mate shows ads; Beyond MST Explorer does not.

### Which is updated more often, Beyond MST Explorer or Sleep Mate?

Beyond MST Explorer ships an update every 27 months, and Sleep Mate every 3 days. Most recently, Beyond MST Explorer was updated on November 3, 2026 and Sleep Mate on November 10, 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.*