# Wellmo vs Sleep Diary by Psyktest

The clearest difference is update cadence: Sleep Diary by Psyktest at every 3 weeks against Wellmo's every 2 months. On price, ads, 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.

Wellmo ships an update every 2 months, Sleep Diary by Psyktest every 3 weeks. The most recent releases landed on September 23, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Wellmo | Sleep Diary by Psyktest |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 21 MB | 56 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Mobile Wellness Solutions MWS Oy](https://appshunter.io/developer/636533206) | [Lavamilk AS](https://appshunter.io/developer/1832836684) |

## What reviewers say

### Wellmo

[App page](https://appshunter.io/ios/app/wellmo/id636533203)

**Features:** Vision Pro support

**In-app purchases:** none


### Sleep Diary by Psyktest

[App page](https://appshunter.io/ios/app/sleep-diary-by-psyktest/id6749919068)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Wellmo free?

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

### Is Sleep Diary by Psyktest free?

Sleep Diary by Psyktest is free to download, with no in-app purchases.

### Do Wellmo or Sleep Diary by Psyktest have ads?

Neither Wellmo nor Sleep Diary by Psyktest shows ads.

### Which is updated more often, Wellmo or Sleep Diary by Psyktest?

Wellmo ships an update every 2 months, and Sleep Diary by Psyktest every 3 weeks. Most recently, Wellmo was updated on September 23, 2026 and Sleep Diary by Psyktest on September 8, 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.*