Tocos — Contraction Timer

The 10-minute labour check

Tocos is the contraction timer that works like a midwife thinks: one 10-minute check that tells you how often, how long, and how strong.

Download on theApp Store Get it onGoogle Play

Why a 10-minute check?

When labour starts, your midwife will ask three things: how often are the contractions coming, how long do they last, and how strong are they. Most contraction timers give you an endless, confusing log. Tocos works the way midwives actually assess labour: a focused observation window. Start a session, tap when each contraction begins and ends, rate the overall strength — and get a clear summary you can read straight down the phone to your midwife or birth unit.

Screenshots

Tocos session running: countdown with three contractions recorded — One 10-minute check

Tocos session summary: contractions, average duration, strength and frequency — The numbers your midwife asks for

Tocos history: three past sessions with their summaries — See the pattern build

Tocos running on Apple Watch — Runs on your wrist too

How it works

Start a timed session — 10 minutes by default, adjustable from 5 to 20
Tap "Contraction Start" and "Contraction End" as they come — that's the whole job
If a contraction runs past the end of the window, Tocos keeps counting until it finishes
Rate the strength: Mild, Moderate or Strong
Get your summary: number of contractions, average length, and frequency ("every 2 min 30 sec")

Made for the moment

Huge, glanceable numbers — readable mid-contraction, at 3am, through tears
The screen stays awake for the whole session
A gentle haptic confirms every tap, so you don't need to look
On your wrist too: the Apple Watch and Wear OS apps run full sessions on their own — no phone needed — and sync history back automatically
Designed in collaboration with midwifery practice — it measures what gets asked, nothing else

One simple purchase: US$2.99
No subscription — because you'll only need it for a few weeks, and that should not cost a monthly fee.

Guides

How many contractions in 10 minutes means labour?The 3-in-10 guideline, what it measures, and why midwives use it. What your midwife will ask when you call the birth unitThe questions to expect on the triage call — and how to have the answers ready. 411 rule vs 3-in-10: contraction guidelines explainedTwo ways of describing the same moment, and which one your care team uses.

Privacy policy

Tocos does not collect, store or transmit any personal data. All session data stays on your device and, if you use the watch app, syncs directly between your own devices. The app contains no analytics, advertising or tracking of any kind. Contact: jasonjedward@gmail.com

Tocos is a timing tool, not a medical device. It doesn't monitor your body or provide medical advice. Always follow the guidance of your midwife, doctor or birth unit, and contact them directly if you have any concerns.