Wantemp: Wrist Temp & Cycle
Sleep temp, skip morning oral
$0.99 · Designed for iPhone. Not verified for macOS.
Say goodbye to setting early alarms and fumbling with oral thermometers.
Wantemp turns your overnight sleeping wrist temperature into a clear basal body temperature (BBT) curve. Open the app to see three things: when your period is likely, whether ovulation shows up on the chart, and whether you’re in a fertile window. Data stays on your iPhone—no account, no ads.
Wantemp is not a community app and not a medical device. It uses inspectable biphasic rules (6 low / 3 high) so you can check the shift yourself. You can also log fever, alcohol, or late nights that may disturb temperature readings.
You can:
• Log period flow, LH tests, symptoms, and intimacy on a calendar
• See follicular, luteal, menstrual, and fertile-window phases at a glance
• Review sleep temperature and resting heart-rate trends
• Quick-log from your watch; glance via Home Screen widgets and Dynamic Island
• Use phase-based encyclopedia, recipes, and relaxation audio (not a substitute for care)
• Export a cycle summary for your clinician
• Send partner notes that omit temperature and period details
• Lock the app with Face ID; keep backups on your device
If your period is late, you have severe pain, or you have PCOS or other conditions, talk to a clinician. Wantemp does not diagnose, treat, replace pregnancy tests, or serve as reliable contraception.
Automatic overnight wrist temperature needs a compatible watch (Series 8 or later, including Ultra) with Sleep Focus on. Manual entry works without a watch.
Grant Health access to get started. All processing is on-device.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
This update corrects how cycle phases are labeled.
• After your period, the app stays in the follicular phase instead of marking ovulation right away
• With wrist temperature, ovulation is confirmed only after a sustained rise, on the day before that rise
• Days that are still in the low phase stay follicular
• With no temperature logged, the fertile window remains a calendar estimate
• The trend chart shows period, follicular, ovulation, and luteal phases in that order
The developer, 福荣 贺, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 福荣 贺
- Size
- 240.2 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 16.1 or later.
- iPhone
Requires iOS 16.1 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 9.0 or later.
- iPhone
- Languages
English and 3 more
- English, Japanese, Simplified Chinese, Traditional Chinese
- Age Rating
16+
- 16+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- Copyright
- © 2026 Wantemp
