# sleep² sleeptracker & analysis vs Chi Trainer

The clearest difference is in-app purchases: Chi Trainer at none against sleep² sleeptracker & analysis's 4. Chi Trainer also leads on iOS requirement (13.0.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. sleep² sleeptracker & analysis sells 4 in-app purchases, starting at $9.99 per month. Chi Trainer asks for nothing beyond the download.

## The numbers

| Metric | sleep² sleeptracker & analysis | Chi Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (37 ratings)](https://appshunter.io/ios/app/sleep-sleeptracker-and-analysis/id1629426238/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 61.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 110 MB | 20 MB |
| Requires iOS | 15.0 | **13.0.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nukkuaa](https://appshunter.io/developer/1629426240) | [Chi Trainer LLC](https://appshunter.io/developer/1895032062) |

## What reviewers say

### sleep² sleeptracker & analysis

[App page](https://appshunter.io/ios/app/sleep-sleeptracker-and-analysis/id1629426238)

This app acts as a personal guide to better sleep, combining innovative sleep training with precise sleep tracking and analysis. It offers an EU-approved medical device program for acute sleep disorders like insomnia, providing personalized recommendations and sleep training based on your data.

**Highlights:** Sleep tracking and analysis, Sleep training programs, Personalized recommendations, Interactive chatbot, Data import (Polar sensor, Apple Health), Manual sleep diary entry

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| sleep² PRO | $9.99 | per month |
| sleep² PRO | $79.99 | per year |
| sleep² intensive program | $39.99 | one-time |
| sleep² intensive program | $99.99 | one-time |


### Chi Trainer

[App page](https://appshunter.io/ios/app/chi-trainer/id6762829005)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is sleep² sleeptracker & analysis free?

sleep² sleeptracker & analysis is free to download, with in-app purchases available.

### Is Chi Trainer free?

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

### Do sleep² sleeptracker & analysis or Chi Trainer have ads?

Neither sleep² sleeptracker & analysis nor Chi Trainer shows ads.

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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.*