# Cognitive Shuffle vs Sleep Tracker

The clearest difference is price: Sleep Tracker at Free against Cognitive Shuffle's $1.99. Sleep Tracker also leads on iOS requirement (13.0 vs 15.0). Cognitive Shuffle's advantage is device support. On in-app purchases there is nothing between them.

Sleep Tracker is free to download; Cognitive Shuffle costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Cognitive Shuffle | Sleep Tracker |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 8 days | — |
| Size | 8 MB | 23 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Huseyin Levent Yasar](https://appshunter.io/developer/1879065286) | [SEOKWON YANG](https://appshunter.io/developer/1863325487) |

## What reviewers say

### Cognitive Shuffle

[App page](https://appshunter.io/ios/app/cognitive-shuffle-sleep-fast/id6760641177)

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

**In-app purchases:** none


### Sleep Tracker

[App page](https://appshunter.io/ios/app/sleep-tracker-slox/id6760894127)

**In-app purchases:** none


## Frequently asked questions

### Is Cognitive Shuffle free?

Cognitive Shuffle costs $1.99, with no in-app purchases.

### Is Sleep Tracker free?

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

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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.*