Comparison

Sleep Time vs Backlogged

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

Head to head
About

Sleep Time

This app helps you fall asleep, stay asleep, and wake up refreshed with advanced sleep cycle analysis and a smart alarm. It offers detailed sleep tracking, soundscapes, and integration with Apple Health.

Highlights
  • Smart alarm clock with single gesture setting
  • Sleep cycle analysis
  • Soundscapes and white noise for falling asleep
  • Detailed monthly and weekly sleep graphs
  • Apple Health integration
  • Instant Heart Rate integration
  • Cloud backup and restore
Features
Read full description

Fall asleep, stay asleep, and wake up refreshed! Sleep Time is a complete sleep tracker and smart alarm clock. Place your phone on the bed and Sleep Time analyzes your sleep cycles through the night, then wakes you during your lightest sleep within your chosen window — so you start the day rested instead of groggy. Trusted by over 35 million users, Sleep Time is an award-winning sleep app. ------------------ 5/5 “I finally understand why I wake up tired some mornings. Sleep Time showed me my sleep cycles, and the smart alarm has made my mornings so much easier — I haven’t hit snooze in weeks.” 5/5 “I’ve tried several apps that log sleep duration and stages, and the interface of Sleep Time is the best by far. It’s easy to understand and simple to use.” 5/5 “Fascinating results. It works remarkably well providing helpful information.” Featured on: TechCrunch, Mashable, Lifehacker, 148apps, eHealth, and many others. ----------------- MAIN FEATURES √ Set the alarm clock with a single gesture √ Fall asleep to soothing soundscapes and white noise √ Alarm rings even in silent mode √ Choose from 20 built-in alarm sounds √ Wake up to your favorite song from your music library √ Sleep Lab™ with light, deep, and REM sleep analysis √ Detailed daily, weekly, and monthly graphs √ Smart wake-up window for a gentler start to the day √ Full history makes night-to-night comparison easy √ Cloud backup and restore for your sleep data √ Clear, easy-to-read interface √ Apple Health integration We build Sleep Time for our users and would love your feedback. Tell us what you think so we can keep improving the app. Upgrade to Premium for unlimited soundscapes, advanced sleep insights, priority support, and an ad-free experience with an auto-renewable subscription. We offer auto-renewable subscriptions with the following terms: - Payment will be charged to your iTunes account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - No cancellation of the current subscription is allowed during active subscription period - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication - Our privacy policy and terms of use: https://www.azumio.com/page/privacypolicy Sweet Dreams, Azumio Team

About

Backlogged

This app helps you understand and reduce your sleep debt for increased energy and focus. It provides a single, clear number for your sleep debt, personalized insights, and actionable targets to improve your sleep habits. All your data is securely stored on your device and privately backed up.

Highlights
  • Automatic sleep data import from Apple Health
  • Single Sleep Debt Number visualization
  • Understandable sleep debt charts
  • Personalized targets for sleep debt reduction
  • Dynamic sleep debt calculation options
  • Private iCloud sync across devices
Features
Read full description

Ever wake up tired, even after a full night's sleep? It’s not just about last night. It’s your sleep debt catching up with you. Backlogged helps you understand and reduce this debt so you can reclaim your energy and focus. Stop guessing how tired you are and start knowing. Backlogged transforms the complex science of sleep into one simple, powerful number: your Sleep Debt. By tracking the difference between the sleep you need and the sleep you get, our app provides clear, personalized insights to help you get back on track. YOUR PRIVACY IS PARAMOUNT We believe your health data belongs exclusively to you. All your sleep information is securely stored only on your device and privately backed up in your personal iCloud account. We never access, analyze, or share your data. KEY FEATURES: - Effortless Tracking: Automatically import your sleep data from Apple Health. No tracker? No problem. Manually add sleep sessions or naps anytime. - Your Sleep Debt Number: Get a clear picture of how behind you really are on sleep with a single, easy-to-read number. Our visual system shows whether you’re on track or falling behind, helping you understand your current state without confusing metrics or guesswork. - Easily Understandable Charts: Visualize your complete sleep debt journey with intuitive charts and graphs. Analyze patterns over weeks and months to see how your sleep habits affect your energy levels and make informed changes. - Smart Targets: Don’t just see the problem; start solving it. Backlogged gives you clear, realistic targets to help reduce your sleep debt. You’ll know exactly how much extra sleep you need each night, and for how long, to return to a well-rested state. - Dynamic Calculations: Choose how your debt is calculated. Use a rolling window of 7, 10, or 14 days and enable our weighted calculation that gives more importance to recent nights, providing a more accurate reflection of how you feel today. - iCloud Sync: Your data and settings are seamlessly and privately synced across all your devices using your personal iCloud account. Download Backlogged today and start your journey to better energy and clearer days. ------ Privacy Policy: https://backloggedapp.neocities.org/#privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ SUBSCRIPTION INFORMATION: Backlogged offers a 1-week free trial for new users. After the trial period, your subscription will begin and renew automatically unless canceled at least 24 hours before the end of the current period. You can manage your subscription and turn off auto-renewal at any time through your Apple ID Account Settings.

Screenshots

Sleep Time4 screens
Backlogged4 screens

Verdict

The call

The clearest difference is ads: Backlogged at none against Sleep Time's shown. Backlogged also leads on review sentiment (100% vs 76%) and rating (5.0 vs 4.7). Sleep Time's advantage is ratings volume (5.4K vs 3). On price, update cadence, in-app purchases and monetization model 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. Sleep Time sells 8 in-app purchases, starting at $4.99 per month and Backlogged sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Backlogged holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Sleep Time has 5.4K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 76% of Sleep Time's written reviews are positive against 100% of Backlogged's.

UpkeepUpdate frequency

Sleep Time ships an update monthly, Backlogged every 2 weeks. The most recent releases landed on October 23, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
Sleep Time versus Backlogged: the parameters behind the verdict, then further details
ParameterSleep TimeBacklogged
PriceFreeFree
Rating4.7 (5.4K ratings)5.0 (3 ratings) — better
Positive reviews75.7% of reviews100.0% of reviews — better
Number of ratings5.4K — better3
Update frequencyMonthlyEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better17
Further details — not scored
Size185 MB3 MB
Age rating4+4+
DeveloperAzumio Inc.Aaron Dunn

Customer experience

Sleep Time

All ratings5,371 ratings
Positive93.6%
Neutral1.3%
Negative5.2%
Written reviews1,467 reviews
Positive75.7%
Neutral7.0%
Negative17.3%

Backlogged

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Sleep Time

Reported bugs

4 issues
  • Alarm not playing sound
  • App crashes when trying to view sleep history
  • Unable to change alarm time
  • Sleep data not recording properly

Requested features

4 requests
  • Allow alarm to play through headphones
  • Provide more sleep sound options in free version
  • Add ability to manually input sleep time
  • Improve ad placement and volume control

Backlogged

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Sleep Time

Subscriptions8
  • Premium$4.991 Month
  • Premium$8.991 Month
  • Premium$9.991 Month
Show 5 more
  • Premium7 Days trial2 variants$9.991 Month
  • Premium$19.993 Months
  • Premium$29.991 Year
  • Premium1 Month trial2 variants$29.991 Year
  • Premium$39.991 Year
2 purchases

Backlogged

Subscriptions2
  • Backlogged Monthly7 Days trial$3.991 Month
  • Backlogged Annual7 Days trial$19.991 Year

Questions

Is Sleep Time free?
Sleep Time is free to download, with in-app purchases available.
Is Backlogged free?
Backlogged is free to download, with in-app purchases available.
Which has better reviews, Sleep Time or Backlogged?
Backlogged is rated higher. Sleep Time averages 4.7 out of 5 from 5.4K ratings, while Backlogged averages 5.0 from 3 ratings.
Do Sleep Time or Backlogged have ads?
Sleep Time shows ads; Backlogged does not.
Which is updated more often, Sleep Time or Backlogged?
Sleep Time ships an update monthly, and Backlogged every 2 weeks. Most recently, Sleep Time was updated on October 23, 2026 and Backlogged on October 9, 2026.

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