Sleep Ledger: Debt Tracker
Pay Off Sleep Debt Daily
About
This app analyzes your sleep data from Apple Health to calculate your sleep debt and provides a personalized daily plan to help you recover. It offers insights into sleep quality and a clear path to reaching your sleep goals.
What's New in Sleep Ledger
1.14
September 20, 2026
What's New in v1.14 — Quality Counts NEW - Quality-Weighted Debt Score (Premium): your sleep debt can now be weighted by how well you actually slept. Each night with Apple Watch stage data is credited against your own 14-day baseline — more deep sleep and higher HRV than usual count for more, a rough night counts for less (±20% at most). - Turn it on from the debt card or Settings → Sleep Debt. The card shows the duration-only figure and the quality adjustment side by side, and everything else — recovery plan, bedtime, widgets, Apple Watch, Siri — follows the same number. - A new "How quality weighting works" sheet explains what is measured and how far it can move. GOOD TO KNOW - Nothing changes until you opt in. It needs at least 5 nights with sleep stages in the last 14 days; until then the card shows how many it has collected. Nights without stage data and naps count exactly as before. Questions or ideas? Settings → Contact reaches us directly.
MoreSubscription plans
Monthly
Full access to all premium features, billed monthly.
In-App Purchases
$79.99
Lifetime
One-time purchase. Unlock all premium features forever.
Developer apps
FAQ
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, along with HRV data in the premium version, to determine the effectiveness of your sleep.
What is the recovery plan in Sleep Ledger?
The recovery plan is a personalized, day-by-day schedule generated by Sleep Ledger. It provides recommended bedtimes to help you pay back your accumulated sleep debt and reach zero debt by a target date, which is visible in the premium version.
Can I see my sleep debt without opening Sleep Ledger?
Yes, Sleep Ledger offers Lock Screen widgets, Home Screen widgets, and Apple Watch complications. These allow you to view your current sleep debt balance and tonight's recommended bedtime at a glance, without needing to open the app.
Is my sleep data kept private with Sleep Ledger?
Sleep Ledger is designed with privacy in mind, processing all sleep, heart rate, and HRV data entirely on your device. It does not require account creation, uses no analytics SDKs, and has no advertising or third-party trackers.
What features are available for free in Sleep Ledger?
The free version of Sleep Ledger includes sleep debt calculation with a 14-day rolling window, recommended bedtimes, manual sleep entry, Lock Screen widgets, Apple Watch complications, bedtime reminders, and Siri Shortcuts.
What are the benefits of the premium version of Sleep Ledger?
The premium version unlocks advanced features such as 14-day debt trend charts, a detailed day-by-day recovery plan with a target zero-debt date, quality-weighted debt scoring using sleep stages and HRV, and sleep stage breakdown charts.
How often is Sleep Ledger updated?
Sleep Ledger was last updated on May 26, 2026, with version 1.10.1. This indicates a recent update, suggesting ongoing development and support for the application.
What devices does Sleep Ledger support?
Sleep Ledger is available for iPhone and Apple Watch. The app is designed to leverage the capabilities of both devices for a comprehensive sleep tracking and analysis experience.