Comparison

Eight Sleep vs Source Performance

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

Source Performance

This app provides personalized workout programs and tracks your fitness journey. Monitor workouts, nutrition, habits, and measurements with coach support. Achieve your health goals with guided exercises and progress tracking.

Highlights
  • Access and track training plans
  • Follow exercise and workout videos
  • Track meals and food choices
  • Monitor daily habits
  • Set and track health goals
  • Message your coach in real-time
  • Track body measurements and progress photos
Features
Read full description

With the Source Performance App, you will have access to workout programs designed specifically to help you reach your fitness and health goals! You can follow & track your workouts, your nutrition, your lifestyle habits, measurements and results–all with the help of your coach. FEATURES: - Access training plans and track workouts - Follow along to exercise and workout videos - Track your meals and make better food choices - Stay on top of your daily habits - Set health and fitness goals and track progress towards your goals - Gain milestone badges for achieving new personal bests and maintaining habit streaks - Message your coach in real-time - Track body measurements and take progress photos - Get push notification reminders for scheduled workouts and activities - Connect your Apple Watch to track workouts, steps, habits, and more right from your wrist - Connect to other wearable devices and apps like the Apple Health App, Garmin, Fitbit, MyFitnessPal, and Withings devices to track workouts, sleep, nutrition, and body stats and composition Download the app today!

Screenshots

Eight Sleep4 screens
Source Performance4 screens

Verdict

The call

The clearest difference is review sentiment: Source Performance at 100% against Eight Sleep's 28%. Source Performance also leads on in-app purchases (none vs 4) and rating (5.0 vs 4.8). Eight Sleep's advantage is update cadence (every 4 days vs every 2 months) and ratings volume (17K vs 9). On price and ads 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. Source Performance asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Source Performance 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 9, 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 Source Performance's.

UpkeepUpdate frequency

Eight Sleep ships an update every 4 days, Source Performance every 2 months. The most recent releases landed on September 29, 2026 and September 18, 2026 respectively.

Scorecard8 real differences · 2 level
Eight Sleep versus Source Performance: the parameters behind the verdict, then further details
ParameterEight SleepSource Performance
PriceFreeFree
Rating4.8 (17K ratings)5.0 (9 ratings) — better
Positive reviews27.6% of reviews100.0% of reviews — better
Number of ratings17K — better9
Update frequencyEvery 4 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod, Apple Watch — better
Requires iOS17.015.1 — better
Further details — not scored
Size245 MB180 MB
Age rating12+4+
DeveloperEight Sleep, IncSource Performance LLC

Customer experience

Eight Sleep

All ratings17,407 ratings
Positive94.4%
Neutral1.4%
Negative4.3%
Written reviews779 reviews
Positive27.6%
Neutral11.4%
Negative61.0%

Source Performance

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 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

Source Performance

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

Source Performance

No in-app purchases

Questions

Is Eight Sleep free?
Eight Sleep is free to download, with in-app purchases available.
Is Source Performance free?
Source Performance is free to download, with no in-app purchases.
Which has better reviews, Eight Sleep or Source Performance?
Source Performance is rated higher. Eight Sleep averages 4.8 out of 5 from 17K ratings, while Source Performance averages 5.0 from 9 ratings.
Do Eight Sleep or Source Performance have ads?
Neither Eight Sleep nor Source Performance shows ads.
Which is updated more often, Eight Sleep or Source Performance?
Eight Sleep ships an update every 4 days, and Source Performance every 2 months. Most recently, Eight Sleep was updated on September 29, 2026 and Source Performance on September 18, 2026.

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