"陣痛ポン" is an app designed for expectant mothers and their partners to easily record the intervals between contractions. With this app, there's no need to constantly check the time or calculate durations. It also doesn't require any unnecessary permissions, providing peace of mind (advertising only).

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Here's how it works:

1. Tap the button when the contraction starts.

2. Tap the button again when the pain subsides.

By following these steps, the app will record the start time, duration, and interval of each contraction. You can also clear the records by tapping the "Clear" button. If you want to keep a record as a memory, you can send the contraction records via email.

The app provides a simple and convenient way to track contractions without the need for complex calculations or manual note-taking. Please note that this app should be used at your own discretion and after agreeing to the terms of use.