Ondra — Contraction Timer
One wave at a time
Free
One wave at a time.
Ondra is a simple contraction timer designed to help you record what you’re feeling and share clear timings with your maternity team.
TIME WITH A TAP
Tap when a contraction begins, then tap again when it ends. See its duration and the time since the previous contraction ended. Your running timer and saved entries remain when you leave and reopen the app.
SEE YOUR RECORDED PATTERN
Review start-to-start spacing, average duration, and the span of a consecutive pattern. Ondra offers feedback when your recorded timings are close to the familiar 5–1–1 guideline: approximately five minutes apart, approximately one minute long, for about an hour.
KEEP YOUR HISTORY USEFUL
Add a missed contraction, correct a timing, delete an entry, or share your recorded timings using the iOS share sheet.
KEEP YOUR CARE TEAM CLOSE
Save separate working-hours and after-hours phone numbers, ready when you want to call. Ondra never calls automatically.
PRIVATE AND SIMPLE
No account, ads, subscriptions, or analytics. Your timings are stored on your device and are not sent to the developer. Sharing is always your choice. Supports light and dark appearance, larger text, and VoiceOver.
IMPORTANT
5–1–1 is a common rule of thumb, not a universal admission rule. Ondra’s timing allowances are software estimates, not clinically validated cutoffs. The app cannot diagnose labor, assess you or your baby, or decide when you should go to hospital. It does not monitor or send alerts while closed. Always follow your maternity team’s advice and contact them whenever you are concerned; do not wait for an app pattern.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Support and privacy information have been updated. You can now contact Ondra through a private support form.
The developer, Erdin Guma, 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
- Erdin Guma
- Size
- 5.9 MB
- Category
- Medical
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later.
- iPhone
- Age Rating
16+
- 16+
- Frequent
Medical Treatment information
Contains
Health or Wellness Topics
- Copyright
- © 2026 Ondra