Backlogged vs Sleep Ledger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Sleep Ledger
This app helps you understand and manage your sleep debt. It provides a daily sleep score, calculates your ideal bedtime, and offers a personalized recovery plan to help you achieve optimal sleep.
- Sleep debt calculation
- Bedtime calculator
- Daily sleep score
- Sleep diary
- Quality-weighted debt score
- Calendar recovery plan
- Apple Health integration
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Know your sleep debt. Know tonight's bedtime. Sleep Ledger scores last night from 0 to 100, works as a bedtime calculator, and turns the sleep you owe into a day-by-day recovery plan — all from your Apple Health sleep data. WHAT MAKES SLEEP LEDGER DIFFERENT Unlike sleep apps that drown you in data, Sleep Ledger gives you two things: a number (your sleep debt) and a plan (when to go to bed tonight). - Sleep Score, Free Every morning, last night gets a 0–100 score with the breakdown behind it: duration, bedtime consistency, and interruptions. - Bedtime Calculator Set your wake time and Sleep Ledger calculates when to go to bed tonight, based on your current debt. - Sleep Diary & Log Your nights are logged automatically from Apple Health. Add, edit, or delete any night by hand — the diary works with or without Apple Watch. - Quality-Weighted Debt Score Not just hours — Sleep Ledger uses Apple Watch sleep stage data (Deep, REM, Core) to calculate how effective your sleep really was. Six hours of deep, restorative sleep counts differently than eight hours of restless tossing. - Calendar Recovery Plan See exactly when you'll be debt-free. Sleep Ledger generates a day-by-day schedule with recommended bedtimes, adjustable for late nights and per-weekday wake times. HOW IT WORKS 1. Download and grant read access to Apple Health sleep data. 2. Sleep Ledger analyzes your past 14 days of sleep history. 3. See your current sleep debt balance instantly. 4. Follow your personalized recovery plan to reach zero debt. FEATURES Free: - Sleep debt calculation (14-day rolling window) - Recommended bedtime based on your wake time and current debt - Sleep Score: a 0–100 rating of last night (duration, bedtime, interruptions) - Sleep diary: manual sleep entry (add, edit, delete nights) - Lock Screen widgets (debt balance & recovery gauge) - Home Screen widget, Small (debt balance + days to zero) - Apple Watch complications (circular gauge, rectangular, corner) - Bedtime reminder and morning summary notifications - Siri Shortcuts (check debt, get bedtime, last night summary) - Works with or without Apple Watch - English, Japanese, German, French, Korean, and Spanish Premium: - 3-month, 6-month and 1-year trend charts - Day-by-day recovery plan with target zero-debt date - Quality-weighted debt score (sleep stages + HRV) - Sleep stage breakdown (Deep / Core / REM) - Home Screen widget, Medium (debt · last night · bedtime) - Workouts & Sleep — workout timing vs. your sleep (optional permission) - CSV data export (date, duration, stages, HR/HRV) ABOUT SLEEP DEBT Sleep debt is the gap between the sleep your body needs and the sleep you actually get. Research shows that accumulated sleep debt affects energy, mood, focus, and long-term health. The good news: you can pay it back. PRICING Sleep Ledger is free to download. Core features — today's debt balance, tonight's bedtime recommendation, Sleep Score, sleep diary, Lock Screen widgets, Apple Watch complications, and Small Home Screen widget — are always free. Premium unlocks the full recovery plan, sleep trend history, quality-weighted scoring, sleep stage breakdown, Home Screen Medium widget, and CSV data export. Annual plan includes a 2-week free trial. A 3-month plan is offered to returning users. PRIVACY No account creation. Sleep Ledger contains zero analytics SDKs, zero advertising code, and zero third-party trackers. Your sleep, heart rate, and HRV data is processed entirely on your device — it never leaves your iPhone. The only network request is triggered when you tap Settings → Contact to send feedback, and the full diagnostic payload is visible in the form before you send it. We believe your health data belongs to you and only you. Note: Sleep Ledger is a general wellness app. It is not a medical device and is not intended to diagnose, treat, or prevent any disease. Consult a healthcare professional for medical concerns.
Screenshots
Verdict
Backlogged and Sleep Ledger are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Backlogged sells 2 in-app purchases, starting at $3.99 per month and Sleep Ledger sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Backlogged against 5.0 for Sleep Ledger. Both are backed by a comparable volume of ratings — 3 and 2 respectively.
Backlogged ships an update every 2 weeks, Sleep Ledger every 9 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.
| Parameter | Backlogged | Sleep Ledger |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 2 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Requires iOS | 17 — better | 18.0 |
| Further details — not scored | ||
| Size | 3 MB | 8 MB |
| Age rating | 4+ | 12+ |
| Developer | Aaron Dunn | Takumi Kanzaki |
Customer experience
Backlogged
Sleep Ledger
In-app purchases
Backlogged
- Backlogged Monthly7 Days trial$3.991 Month
- Backlogged Annual7 Days trial$19.991 Year
Sleep Ledger
- Monthly$4.991 Month
- SleepLegder Premium (3Months)$11.993 Months
- Annual14 Days trial$29.991 Year
- Lifetime$79.99






