Comparison

Eight Sleep vs Solius

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

Head to head
About

Eight Sleep

This intelligent sleep system actively manages your sleep environment by adjusting temperature and elevation. It tracks detailed sleep metrics and provides personalized insights to help you wake up feeling refreshed. The system supports individual sleep profiles for multiple users.

Highlights
  • Personalized temperature control
  • Automatic elevation adjustments
  • Sleep stage tracking
  • Heart rate and HRV monitoring
  • Snoring detection
  • Gentle wake-up alarms
  • Dual sleep profiles
Read full description

Introducing Pod 6. The setup is as effortless as your sleep. Guided Hub setup gets you paired in minutes, a live priming screen decodes your Pod's lights in real time so you're never guessing, and Solo Pod owners get a path built just for them. Your best sleep starts tonight. The Eight Sleep Pod is the intelligent sleep system that gives you up to one hour more of sleep every night. It cools. It heats. It elevates. PERSONALIZED SLEEP WITH AUTOPILOT Autopilot is the intelligence behind the Pod. It adjusts your temperature and elevation to perfect your sleep experience. LEARN ABOUT YOUR SLEEP AND HEALTH View your sleep stages, time slept, heart rate, HRV, and snoring. Plus, receive personalized insights and recommendations. WAKE UP REFRESHED With customizable chest-level vibration and a gradual thermal change, you will wake up gently and feel fully refreshed. TWO SLEEP PROFILES PER POD Autopilot creates a profile for up to two individuals on the same Pod and refines overtime. Have questions? We’re here to help. Email us at support@eightsleep.com. Terms of Use: - www.eightsleep.com/app-terms-conditions/ - www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Solius

This app pairs with a UVB light therapy device to deliver personalized doses of UVB light based on your skin tone. It offers guided sessions, reminders, and progress tracking for year-round health benefits. The device is FDA-cleared and requires no prescription.

Highlights
  • Personalized UVB dosing based on skin tone
  • FDA-cleared over-the-counter device
  • Short weekly sessions (approx. 5 minutes)
  • Guided session setup and safety checks
  • Weekly reminders and progress tracking
  • Therapy history and trends
Features
Read full description

A smarter, safer way to stimulate the UVB health benefits of the sun is finally here. Solius is the only FDA-cleared over-the-counter UVB light therapy device that analyzes your unique skin tone to deliver a precise, optimal dose of UVB light, activating the natural health benefits of the sun with less than 1% of the total UV risk. The Solius app pairs with a Solius device, which is required for use and is sold separately at solius.com. PERSONALIZED DOSING FOR YOUR SKIN Solius scans your skin with a built-in sensor and automatically calculates a dose designed for your unique tone, so every session delivers an optimal dose of UVB light therapy. FDA-CLEARED, NO PRESCRIPTION NEEDED Solius is the only UVB light therapy device cleared by the FDA for over-the-counter use, reviewed under the Class II medical device pathway for safety, performance, and quality. APPROXIMATELY FIVE MINUTES, ONCE A WEEK A single short session, once per week, is designed to maintain the UVB light-driven benefits your body relies on year round, regardless of season, weather, or where you live. GUIDED SESSION FLOW Step-by-step in-app guidance walks you through positioning, session length, and safety checks to ensure you get the full benefit of each dose without guesswork. STREAKS AND WEEKLY REMINDERS Smart reminders nudge you when it's time for your next dose. Weekly streaks and progress views help consistency turn into results and whole body benefits. THERAPY HISTORY AND TRENDS Review every session at a glance: date, duration, dose, and therapy timespan. SAFETY The Solius dosing sensor calculates an optimal safe dose. A full year of weekly Solius therapy adds up to less total UV than about five minutes of natural midday sun. HOW IT WORKS 1. Download the Solius app and create an account, allowing you to pair with your Bluetooth® connected Solius device to complete set up and control your device. 2. Set up anytime, anywhere: Solius is easy to set up, no mounting or installation required. 3. Personalize your dose: The Solius app guides you through smart skin analysis to calculate your optimal dose. 4. Repeat therapy weekly: Use Solius for approximately five minutes a week to maximize year-round benefits. INDICATION FOR USE Solius is an over-the-counter (OTC) light panel intended to stimulate production of Vitamin D in people 22 years and older. CONTRAINDICATIONS FOR USE Do not use Solius if: - You have a history of underlying photosensitivity. - You currently use any of the following photosensitizing medications orally or topically on the therapy area (back of torso from waist to neck): anti-convulsant, amiodarone, doxycycline, hydrochlorothiazide, methotrexate, naproxen, sulfa antibiotics, tetracycline, or tretinoin. - You have been or become diagnosed with sensitivity or allergies to light affecting your skin, including but not limited to: actinic prurigo, chronic actinic dermatitis, lupus erythematosus, photodermatitis, polymorphous light eruption, protoporphyria, solar urticaria, UV-sensitive syndrome, vitiligo, or xeroderma pigmentosum. DISCLAIMER Solius is clinically proven to stimulate the production of vitamin D. References to the benefits of sunlight, UVB light, and vitamin D are based upon published, peer-reviewed research. The Solius device is not intended to diagnose, treat, cure, or prevent disease, except for the indications for use described in the user manual for your applicable region. Solius does not provide specific medical advice to users. Users should seek advice from a qualified physician or healthcare provider. This app does not establish a doctor-patient relationship. For detailed product information please consult the User Manual prior to use. Have questions? We’re here to help. Email us at support@solius.com. Privacy Policy: solius.com/legal/privacy-policy

Screenshots

Eight Sleep4 screens
Solius4 screens

Verdict

The call

The clearest difference is review sentiment: Solius at 100% against Eight Sleep's 28%. Solius also leads on in-app purchases (none vs 4) and rating (5.0 vs 4.8). Eight Sleep's advantage is ratings volume (17K vs 70) and update cadence (every 4 days vs every 3 weeks). On price, ads, device support and iOS requirement 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. Eight Sleep sells 4 in-app purchases, starting at $10.00 per month. Solius asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Solius holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Eight Sleep has 17K ratings behind it against 70, so its average is the more settled of the two. Written reviews point the same way: 28% of Eight Sleep's written reviews are positive against 100% of Solius's.

UpkeepUpdate frequency

Eight Sleep ships an update every 4 days, Solius every 3 weeks. The most recent releases landed on September 27, 2026 and September 17, 2026 respectively.

Scorecard6 real differences · 4 level
Eight Sleep versus Solius: the parameters behind the verdict, then further details
ParameterEight SleepSolius
PriceFreeFree
Rating4.8 (17K ratings)5.0 (70 ratings) — better
Positive reviews27.6% of reviews100.0% of reviews — better
Number of ratings17K — better70
Update frequencyEvery 4 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size245 MB325 MB
Age rating12+4+
DeveloperEight Sleep, IncSolius Labs, Inc.

Customer experience

Eight Sleep

All ratings17,366 ratings
Positive94.4%
Neutral1.4%
Negative4.3%
Written reviews778 reviews
Positive27.6%
Neutral11.4%
Negative60.9%

Solius

All ratings70 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews30 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Eight Sleep

Reported bugs

5 issues
  • App freezes and loses connection to pod
  • Alarms not working or turning off properly
  • Temperature settings not saving or resetting
  • Sleep data not syncing or displaying accurately
  • Frequent app crashes and performance issues

Requested features

5 requests
  • Apple Watch app integration
  • Offline temperature/alarm controls
  • Customizable sleep tracking and insights
  • Improved alarm snooze/dismiss functionality
  • Nap mode and more sleep schedule flexibility

Solius

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Eight Sleep

Subscriptions4
  • 8+ Standard (Monthly)$10.001 Month
  • 8+ Pro (Monthly)$18.991 Month
  • 8+ Standard (Annual)$96.001 Year
Show 1 more
  • 8+ Pro (Annual)$179.991 Year
None

Solius

No in-app purchases

Questions

Is Eight Sleep free?
Eight Sleep is free to download, with in-app purchases available.
Is Solius free?
Solius is free to download, with no in-app purchases.
Which has better reviews, Eight Sleep or Solius?
Solius is rated higher. Eight Sleep averages 4.8 out of 5 from 17K ratings, while Solius averages 5.0 from 70 ratings.
Do Eight Sleep or Solius have ads?
Neither Eight Sleep nor Solius shows ads.
Which is updated more often, Eight Sleep or Solius?
Eight Sleep ships an update every 4 days, and Solius every 3 weeks. Most recently, Eight Sleep was updated on September 27, 2026 and Solius on September 17, 2026.

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