# Shift Adapt vs Absolute Rest

The clearest difference is rating: Shift Adapt at 5.0 against Absolute Rest's 3.7. Shift Adapt also leads on iOS requirement (11.0 vs 16.0). Absolute Rest's advantage is update cadence (every 3 weeks vs every 3 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Shift Adapt holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

Shift Adapt ships an update every 3 months, Absolute Rest every 3 weeks. The most recent releases landed on September 14, 2026 and July 31, 2026 respectively.

## The numbers

| Metric | Shift Adapt | Absolute Rest |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/shift-adapt/id6469709048/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/absolute-rest/id6475053795/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 80 MB | 41 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Unscared Inc](https://appshunter.io/developer/1436460208) | [Absolute Rest, Inc](https://appshunter.io/developer/1723237362) |

## What reviewers say

### Shift Adapt

[App page](https://appshunter.io/ios/app/shift-adapt/id6469709048)

Log your workouts and track your performance from anywhere. Access daily breath practices to enhance your training experience. Expand your fitness journey with this comprehensive tool.

**Highlights:** Workout logging, Performance tracking, Daily breath practices, Access training from anywhere, Expand fitness experience

**Features:** macOS Compatibility

**In-app purchases:** none


### Absolute Rest

[App page](https://appshunter.io/ios/app/absolute-rest/id6475053795)

This app provides a comprehensive sleep management program using an FDA-cleared testing system to analyze sleep patterns through the autonomic nervous system. It offers personalized insights and expert support to improve sleep quality and daytime performance.

**Highlights:** Comprehensive sleep assessment, Autonomic nervous system testing, Personalized insights and expert support, User-friendly app interface, Continuous monitoring of sleep parameters

**In-app purchases:** none


## Frequently asked questions

### Is Shift Adapt free?

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

### Is Absolute Rest free?

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

### Which has better reviews, Shift Adapt or Absolute Rest?

Shift Adapt is rated higher. Shift Adapt averages 5.0 out of 5 from 2 ratings, while Absolute Rest averages 3.7 from 3 ratings.

### Do Shift Adapt or Absolute Rest have ads?

Neither Shift Adapt nor Absolute Rest shows ads.

### Which is updated more often, Shift Adapt or Absolute Rest?

Shift Adapt ships an update every 3 months, and Absolute Rest every 3 weeks. Most recently, Shift Adapt was updated on September 14, 2026 and Absolute Rest on July 31, 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.*