Sleep Ledger: Debt Tracker
Bedtime Calculator & Diary
About
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.
What's New in Sleep Ledger
1.20
November 4, 2026
What's New in v1.20 NEW - Sleep Score: every morning, last night gets a 0–100 score with its breakdown — duration, bedtime consistency and interruptions — right on the Dashboard. Free for everyone with Apple Watch sleep data. - History shows your average score and a score chart; the weekly summary adds the week's average. - Premium: choose Sleep score under Settings → Sleep Debt to let nights with an irregular bedtime or many interruptions count a little less (up to −20%). The score is calculated by SleepLedger from Apple Health sleep stages. It is not Apple's Sleep Score and the two can differ. Questions or ideas? Settings → Contact reaches us directly.
MoreSubscriptions & In-App Purchases
SleepLegder Premium (3Months)
Full access to all features, billed every 3 months
Developer apps
FAQ
What is Sleep Ledger?
Sleep Ledger is a health and fitness app that 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.
How does Sleep Ledger calculate sleep debt?
Sleep Ledger calculates sleep debt by analyzing your past 14 days of sleep history from Apple Health. It uses a quality-weighted score that considers sleep stages like Deep, REM, and Core, as well as interruptions, to determine the effectiveness of your sleep.
Can I use Sleep Ledger without an Apple Watch?
Yes, Sleep Ledger works with or without an Apple Watch. Your nights are logged automatically from Apple Health, but you can also add, edit, or delete any night manually in the sleep diary.
What are the premium features of Sleep Ledger?
Premium features include 3-month, 6-month, and 1-year trend charts, a detailed day-by-day recovery plan with a target zero-debt date, quality-weighted debt scoring based on sleep stages and HRV, and CSV data export.
What is the pricing for Sleep Ledger?
Sleep Ledger is free to download with core features available. Premium features are available through subscription plans: Monthly at $4.99, 3-Month at $11.99, and Annual at $29.99, which includes a 14-day free trial.
What devices is Sleep Ledger compatible with?
Sleep Ledger is available for iPhone and Apple Watch, leveraging Apple Health data for its sleep tracking and analysis features.
How often is Sleep Ledger updated?
The latest version of Sleep Ledger is 1.20, and it was last updated on November 4, 2026. This indicates a relatively frequent update schedule.
Does Sleep Ledger have ads?
No, Sleep Ledger does not contain advertisements. The app is free to download and offers premium features through optional subscriptions.
