Comparison

Shift Adapt vs Absolute Rest

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Shift Adapt

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
Read full description

Log into your SH//FT training from anywhere with the Shift Adapt app! Log your workouts, track your performance, and enjoy daily breath practices inside the app. Expand your experience! If you enjoy the Shift Adapt app we'd really appreciate your taking a second to leave a nice review to help us improve and get the word out. Thank you!

About

Absolute Rest

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
Read full description

Transform Your Sleep with Clinical Precision Absolute Rest combines the capabilities of a professional sleep laboratory with the precision of sleep science to deliver the first and only comprehensive sleep management program directly to your home. Utilizing an innovative FDA-cleared testing system, designed to detect sleep patterns through the autonomic nervous system with cutting-edge technology, you'll get a comprehensive analysis of your sleep quality and personalized insights to help you achieve your best rest. Key Features: Comprehensive Sleep Assessment: Absolute Rest transforms your fingertip into a clinical sleep lab, measuring every movement, heartbeat, and breath throughout the night. Detect and analyze a wide range of sleep problems and disorders, including insomnia, sleep apnea, hyperarousal, hyperactivity, and much more with unmatched depth and clarity. Cutting-Edge Autonomic Nervous System Testing: Gain insights from your autonomic nervous system while you sleep, with precise measurements of sympathetic fragmentation, deep parasympathetic restoration, sleep-disordered breathing including apneas, hypopneas, and RERAs, the only objective and FDA cleared sleep quality index (SQI), and much more. Personalized Insights and Expert Support: Receive detailed, actionable recommendations based on your unique sleep data. Your dedicated team, including a sleep clinician, clinical psychologist, and behavioral sleep expert, tailors solutions to your specific needs. Your team actively monitors nightly data to provide real-time, personalized guidance and comprehensive management to improve your sleep health and daytime performance. User-Friendly App Interface: The Absolute Rest app makes it simple to track meaningful sleep metrics and understand your unique patterns and trends with intuitive visuals and reports available on our companion web app. Continuous Monitoring: Unlike laboratory-based sleep studies, Absolute Rest continuously monitors multiple sleep parameters over time, providing ongoing insights and adjustments to help you optimize your sleep, and energize your life. Why Choose Absolute Rest? Millions suffer from poor sleep quality, leading to fragmented sleep, fatigue, and many associated health issues. Absolute Rest goes beyond traditional sleep trackers, offering a comprehensive, clinical-grade assessment to help you uncover the root causes of your particular sleep problems. With personalized insights and expert support, you can finally achieve the deep, restorative sleep you need to perform your best every day.

Screenshots

Shift Adapt4 screens
Absolute Rest3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Shift Adapt versus Absolute Rest: the parameters behind the verdict, then further details
ParameterShift AdaptAbsolute Rest
PriceFreeFree
Rating5.0 (2 ratings) — better3.7 (3 ratings)
Positive reviews100.0% of reviews—
Number of ratings23 — better
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.0 — better16.0
Further details — not scored
Size80 MB41 MB
Age rating4+4+
DeveloperUnscared IncAbsolute Rest, Inc

Customer experience

Shift Adapt

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Absolute Rest

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

Shift Adapt

No in-app purchases

None

Absolute Rest

No in-app purchases

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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