# Mindzy vs Understanding Sleep

The clearest difference is in-app purchases: Understanding Sleep at none against Mindzy's 5. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Mindzy sells 5 in-app purchases, starting at $9.99 per month. Understanding Sleep asks for nothing beyond the download.

Mindzy ships an update every 9 days, Understanding Sleep fortnightly. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Mindzy | Understanding Sleep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Fortnightly |
| Size | 193 MB | 91 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pica Trebax Inc.](https://appshunter.io/developer/1580547388) | [Avicenna Research Inc.](https://appshunter.io/developer/1137173051) |

## What reviewers say

### Mindzy

[App page](https://appshunter.io/ios/app/mindzy-brain-training/id6478658989)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription 1 month | $9.99 | per month |
| Promo subscription 1 year | $29.99 | per year |
| Subscription 1 year | $39.99 | per year |
| Annual Premium | $49.99 | per year |
| Annual Premium | $59.99 | per year |


### Understanding Sleep

[App page](https://appshunter.io/ios/app/understanding-sleep/id6763775915)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mindzy free?

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

### Is Understanding Sleep free?

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

### Do Mindzy or Understanding Sleep have ads?

Neither Mindzy nor Understanding Sleep shows ads.

### Which is updated more often, Mindzy or Understanding Sleep?

Mindzy ships an update every 9 days, and Understanding Sleep fortnightly. Most recently, Mindzy was updated on October 16, 2026 and Understanding Sleep on October 7, 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.*