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Curated collection

Best sleep tracker apps that explain what they measure

Compare iPhone apps for the situation in this guide: sleep tracker apps that explain what they measure. Review the listed features, purchase notes, and limitations, then confirm current details on each app's official store page.

What this shortlist covers

This collection is organized around one use case: sleep tracker apps that explain what they measure. The app cards below provide the available feature descriptions, purchase notes, limitations, and source links so you can compare candidates against your own requirements.

How to use the comparison

Treat each listing as a candidate, then verify the requirement that matters most to you against its official store page. Greatooly labels researched listings separately from hands-on tests; inclusion here is not a claim that every condition was independently tested.

How we selected these apps

  • Check whether each app explicitly supports the core need described by: sleep tracker apps that explain what they measure.
  • Compare documented limitations and the exact features available on the free and paid plans.
  • Verify any condition in the title, such as offline use, sharing, privacy, or subscription terms, on the official source before relying on it.

Frequently asked questions

How were apps selected?

This draft shortlist uses matching information in Greatooly's public app catalog. An editor should verify each app against the collection criteria and its official source before publishing the collection.

Does inclusion mean the app was tested?

No. The app detail page states whether information was researched or hands-on tested. Verify the use case and current terms with the linked official listing.

Napper: Baby Sleep Tracker

Track baby sleep, feeds, and diapers while viewing nap and bedtime estimates, shared caregiver schedules, sleep sounds, and educational articles.

Sleep Sounds: Rain & Fan Mix

Sleep Sounds: Rain & Fan Mix provides 27 offline sounds, custom mixes of up to eight layers, a fade timer, focus timers, breathing patterns, and short meditation prompts. The listing says it has no ads, subscriptions, or account requirement. Optional iCloud sync is off by default, and activity records stay on the device unless the user enables sync.

ParentLove: Baby Tracker

Share newborn feeding, pumping, diaper, sleep, and growth logs with caregivers, with free core tracking and a one-time Pro upgrade.

Workout Planner: Orbfit

A workout and meal planner that adapts training suggestions to a user's goals, schedule, sleep, and reported limitations.

WakeState

A private symptom and sleep journal for people tracking narcolepsy and related sleep-wake conditions.