RestTally

See your recent sleep debt, plan tonight's recovery window, and keep the estimate useful with Apple Health or quick manual entries.

RestTally is a sleep debt calculator and rest planning app designed for people who want a clearer view of recent sleep balance.

With permission, RestTally reads Apple Health sleep, HRV, and resting heart rate summaries. When Health data is missing, you can add a manual sleep entry. RestTally estimates recent sleep debt and turns it into a simple tonight plan with target duration, bedtime, wake time, and practical repayment steps.

Main features:

• Sleep debt balance
• Apple Health sleep context
• Manual sleep entry
• Tonight repayment plan
• Optional AI explanation
• English and Chinese language switch

Disclaimer: RestTally provides general sleep planning guidance only. It does not provide medical diagnosis, treatment advice, or professional medical services.

Sleep guidance sources shown in the app:

• CDC: About Sleep, https://www.cdc.gov/sleep/about/index.html
• American Academy of Sleep Medicine and Sleep Research Society consensus recommendation, https://jcsm.aasm.org/doi/10.5664/jcsm.4758