Contraction Timer · 5-1-1 done for you
Tap Start when a contraction begins, tap Stopwhen it ends. We handle the rest — interval, duration, the 5-1-1 rule, and a clear "call your team now" moment.
Ready when you are
0:00
Logged
0
contractions
Avg duration
—
seconds
Avg interval
—
minutes apart
Last hour
0
contractions
Tap Start when a contraction begins.
We'll handle interval and duration. The big read-out below will tell you when 5-1-1 is reached.
Saved locally on this device. Nothing leaves your phone.
Why we built this
The 5-1-1 rule (contractions 5 minutes apart, lasting 1 minute, for 1 hour) is the rule of thumb most US OB-GYNs and birth centers use to know you're in active labor.
For preterm pregnancies (<37w) or anyone with prior preterm birth, the rule is different — any patternwarrants a call. We'll flag that for you.
This tool is free. The mom who built it would love to walk with you.
Inside Denny: every tool above + a warm AI who remembers your week, your name, and your last ultrasound. 7 days free, no card.
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