Rhythmom - Contraction Timer
Count contractions in one tap
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
Time contractions with one tap. The 5-1-1 rule tells you when it's time to go. PDF reports, Apple Watch, widgets, family sharing — plus a birth announcement.
Rhythmom is a contraction timer designed for moms-to-be. Tap once when a contraction starts and again when it ends — the app records each contraction's duration and interval, and uses your contraction rules (such as 5-1-1) to let you know when it may be time to head to the hospital, supporting you until you meet your baby.
KEY FEATURES
• One-tap contraction timing
Tap the ring to start, tap again to stop. Duration, interval, and today's count at a glance.
• Smart hospital reminders
Built-in 5-1-1 and other common contraction rules, fully customizable for interval, duration, and pattern length. When your pattern meets the standard, the app alerts you — experienced moms can switch to the stricter 4-1-1 rule.
• Complete history
Every contraction is saved. Review totals, average duration, and average interval anytime — perfect to show your doctor.
• Visual charts
Trend charts for the last 14 days, this week, and this month make duration and interval easy to read at a glance.
• PDF report export
Generate a contraction report with summary metrics and full details, ready to print or share with your doctor.
• Apple Watch timing
Contractions don't wait for your phone. Start timing from your wrist — data syncs automatically.
• iPhone widgets
Put contraction timing on your Home Screen or Lock Screen. Start logging and check your status without opening the app.
• Invite family
Labor is easier together. Invite your partner or family to view your log and help time contractions, side by side.
• Birth announcement
After your baby arrives, add a name, birth time, weight, and length to create a beautiful announcement card and share the joy with everyone who cares.
PRIVACY & SECURITY
All data stays on your device. Only you and the family you invite can see it. We never upload or collect your health data.
PLEASE NOTE
This app is for health education reference only and is not a medical diagnosis. If your water breaks, you notice bleeding, or you have severe pain, seek medical care immediately.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Fixed known issues.
The developer, Hangzhou Lion Cat Culture Technology Co., Ltd., 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
- Hangzhou Lion Cat Culture Technology Co., Ltd.
- Size
- 38.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later. - Apple Watch
Requires watchOS 11.6 or later.
- iPhone
- Languages
English and 10 more
- English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
16+
- 16+
- Infrequent
Medical Treatment information
- In-App Purchases
Yes
- Rhythmom $0.99
- Copyright
- © 2026 Hangzhou Lion Cat Culture Technology Co., Ltd.