Comparison

Absolute Rest vs Dirt Factor

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

Head to head
About

Absolute Rest

This app provides a comprehensive sleep management program using an FDA-cleared testing system to analyze sleep patterns. 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.

About

Dirt Factor

Features
Read full description

Your race. Your fitness. Your training plan. Training for Leadville, Unbound, or your first gravel or mountain bike race? Dirt Factor analyzes the demands of your goal race, compares them with your current fitness, and builds a personalized training plan to help you get ready. Stop guessing. Start training with a purpose. NEEDED VS. CURRENT Pick a race and a goal: a finish time, or a place in your age group from past results. Dirt Factor models every climb, descent and surface on the course and gives you one honest answer: the power your goal takes against the power you have now. WHERE IS THE GAP? See the watts each climb and section takes, compared with your own race file. Know whether it's the climbs, the descents or the last three hours. BUILT FOR DIRT - Surface by segment, from pavement and gravel road to rough singletrack - A 1-5 technical trail scale: rough trail sets its own speed, whatever your watts - Altitude: the same watts feel harder at race elevation than where you train - Your descending, cornering and pacing, learned from your race files A PLAN BUILT BACK FROM RACE DAY - Blocks that work one intensity at a time, with your biggest gap as the training focus - Fits your riding days, hours, and indoor or outdoor riding - Race rehearsals before the big day, then a real taper - Every session explained: when to use it, how it feels and why it's in your plan - Targets in power, heart rate and feel, with trainer files to export CONNECTIONS Bring in your FTP, power curve and recent riding from Intervals.icu, Strava or Wahoo, and send your sessions to Intervals.icu or your Wahoo ELEMNT. Featured races include Big Sugar, Mid South, Unbound, SBT GRVL, Leadville and more, or upload your own course GPX. DIRT FACTOR PREMIUM The free version gives you one race goal and the first two weeks of a plan. Premium adds unlimited race goals with pacing, gap and section targets, custom training plans through race day, your race files and riding style in every plan, and workouts sent to Intervals.icu or your Wahoo. Premium is an auto-renewing monthly or yearly subscription with a free trial. Payment is charged to your Apple Account, and it renews automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel in your App Store account settings. Terms of Use: https://dirtfactor.app/terms/ Privacy Policy: https://dirtfactor.app/privacy/

Screenshots

Absolute Rest3 screens
Dirt Factor4 screens

Verdict

The call

The clearest difference is rating: Dirt Factor at 5.0 against Absolute Rest's 3.7. Dirt Factor also leads on update cadence (every 2 days vs monthly). Absolute Rest's advantage is in-app purchases (none vs 2). On price, ratings volume, ads and device support 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. Dirt Factor sells 2 in-app purchases, starting at $12.00 per month. Absolute Rest asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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

UpkeepUpdate frequency

Absolute Rest ships an update monthly, Dirt Factor every 2 days. The most recent releases landed on November 8, 2026 and November 13, 2026 respectively.

Scorecard3 real differences · 7 level
Absolute Rest versus Dirt Factor: the parameters behind the verdict, then further details
ParameterAbsolute RestDirt Factor
PriceFreeFree
Rating3.7 (3 ratings)5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings3 — better2
Update frequencyMonthlyEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size41 MB28 MB
Age rating4+17+
DeveloperAbsolute Rest, IncKaizen Endurance

Customer experience

Absolute Rest

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

Dirt Factor

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Absolute Rest

No in-app purchases

2 purchases

Dirt Factor

Subscriptions2
  • Dirt Factor Premium Monthly7 Days trial$12.001 Month
  • Dirt Factor Premium Yearly7 Days trial$99.001 Year

Questions

Is Absolute Rest free?
Absolute Rest is free to download, with no in-app purchases.
Is Dirt Factor free?
Dirt Factor is free to download, with in-app purchases available.
Which has better reviews, Absolute Rest or Dirt Factor?
Dirt Factor is rated higher. Absolute Rest averages 3.7 out of 5 from 3 ratings, while Dirt Factor averages 5.0 from 2 ratings.
Do Absolute Rest or Dirt Factor have ads?
Neither Absolute Rest nor Dirt Factor shows ads.
Which is updated more often, Absolute Rest or Dirt Factor?
Absolute Rest ships an update monthly, and Dirt Factor every 2 days. Most recently, Absolute Rest was updated on November 8, 2026 and Dirt Factor on November 13, 2026.

Other comparisons