Time how long each contraction lasts and how far apart they are, watch the 5-1-1 and 4-1-1 patterns, and see whether things are picking up, all in your browser.
Is my data private? Yes. Contractions are saved only in your browser's local storage, and the app makes no network requests after loading, so your data never leaves your device. Export your data to JSON in the settings if you want to save it.
What do 5-1-1 and 4-1-1 mean? Contractions roughly 5 (or 4) minutes apart, each about a minute long, sustained for about an hour. A common cue to head to the hospital.
Do I need to install anything? No. It runs in any modern browser and can be added to your home screen.
This app is free and has no ads. If it helped you and you'd like to chip in toward hosting costs, you can support it below. I really appreciate the support!
Buy me a coffee Sponsor on GitHub
This tool is a timing aid, not medical advice; always follow your provider's instructions on when to call or go in.