# Sleep Debt: Rest & Recover — Track your sleep deficit

> Track your sleep deficit (iPhone/iPad app by 博志 袁.)

- Source: https://appshunter.io/ios/app/sleep-debt-rest-and-recover/id6772904733 (this page in markdown: same URL + `.md`)
- Developer: [博志 袁](https://appshunter.io/developer/1873841662)
- Category: Health & Fitness, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: American English
- Released: 2026-05-27
- Data updated: 2026-06-01
- User reviews in markdown: https://appshunter.io/ios/app/sleep-debt-rest-and-recover/id6772904733/reviews.md

## What is Sleep Debt?

Sleep Debt turns your Apple Health sleep data into a single, honest number: how many hours of sleep you actually owe yourself.

Most of us lose a little sleep most nights — 30 minutes here, an hour there — and never see the running total. Sleep Debt does the math for you over a rolling 14-day window, weighted toward your most recent nights, and tells you what tonight should look like to start catching up.

WHAT YOU SEE
• Today's sleep balance — how much you're behind (or ahead of) your goal
• An ideal bedtime for tonight, calculated from your goal wake time
• A 14-day history with weekly and daily breakdowns
• Time in each sleep stage when Apple Health has staged data
• A monthly calendar that lets you spot patterns at a glance

HOW IT WORKS
Sleep Debt uses a 14-day rolling window. Each night's deficit (goal minus actual sleep) is weighted exponentially so recent nights count more than older ones. The recommendation for tonight follows published sleep research: roughly a quarter of your accumulated debt can be repaid in a single night, capped at +/- 1.5 hours and held within a healthy 6 to 10 hour range.

You can read the reasoning behind the algorithm inside the app under "How Sleep Debt Works."

A GENTLE BEDTIME REMINDER
Turn on Bedtime Reminder and Sleep Debt will schedule a local notification a few minutes before tonight's recommended bedtime. The reminder time updates as your sleep data changes — no servers, no accounts.

YOUR DATA STAYS ON YOUR DEVICE
• Sleep Debt reads sleep samples from Apple Health (read-only)
• Nothing is uploaded, synced, or shared with any third party
• No accounts, no advertising, no analytics, no tracking
• Revoke access at any time in Settings > Health

REQUIREMENTS
• iPhone running iOS 18 or later
• Sleep data in Apple Health (from Apple Watch, third-party trackers, or manual entry)

Sleep Debt is an awareness and planning tool, not a medical device. It does not diagnose sleep disorders. If you have ongoing concerns about your sleep, please talk to a qualified clinician.


## Version history (last 2 releases)

### 1.0.1 — 2026-06-01

This update refreshes how Sleep Debt presents itself and tidies things under the hood:

• Redesigned App Store screenshots
• Added a privacy manifest for full App Store compliance
• Corrected the in-app support email
• Minor internal cleanup

Sleep well.

### 1.0 — 2026-05-27

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*