# sleep² sleeptracker & analysis vs Impact Athletics

The clearest difference is update cadence: sleep² sleeptracker & analysis at every 3 weeks against Impact Athletics's every 3 months. On price, ads, in-app purchases 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 and Impact Athletics sells 1 in-app purchase, starting at $50.00 per month. Whichever you choose, the download price is not the number that matters.

sleep² sleeptracker & analysis ships an update every 3 weeks, Impact Athletics every 3 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | sleep² sleeptracker & analysis | Impact Athletics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (38 ratings)](https://appshunter.io/ios/app/sleep-sleeptracker-and-analysis/id1629426238/reviews)** | — |
| Number of ratings | **38** | — |
| Positive reviews | 60.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 110 MB | 54 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Nukkuaa](https://appshunter.io/developer/1629426240) | [Jack Ham](https://appshunter.io/developer/1784942656) |

## 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 |


### Impact Athletics

[App page](https://appshunter.io/ios/app/impact-athletics/id6739345891)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Coaching | $50.00 | per month |


## Frequently asked questions

### Is sleep² sleeptracker & analysis free?

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

### Is Impact Athletics free?

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

### Do sleep² sleeptracker & analysis or Impact Athletics have ads?

Neither sleep² sleeptracker & analysis nor Impact Athletics shows ads.

### Which is updated more often, sleep² sleeptracker & analysis or Impact Athletics?

sleep² sleeptracker & analysis ships an update every 3 weeks, and Impact Athletics every 3 months. Most recently, sleep² sleeptracker & analysis was updated on November 7, 2026 and Impact Athletics on October 30, 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.*