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Privacy policy

Last updated: November 13, 2026

Chapu is a water tracker that keeps your records on your phone. This page explains what the app and this website handle, in plain words.

The short version

There is no account and nothing to sign up for.

Your drinks, goal, buddy and settings are saved only on your phone. We never receive them.

The free version shows small banner ads from Google AdMob. They are non-personalized. Chapu Plus removes them.

What stays on your phone

Everything you enter in Chapu is stored on your device: the drinks you log, your daily goal and the details used to suggest it (weight, activity level and climate), your reminder times, your buddy, scenes, toys and other settings.

Chapu has no server of its own and no analytics. We, the makers of Chapu, cannot see this information.

Ads in the free version

The free version shows banner ads served by Google AdMob. Chapu asks only for non-personalized ads, which are not based on your interests or history.

To show and measure ads and to prevent fraud, Google may collect your device's advertising ID, an approximate location based on your IP address, and how you interact with the ads. In the European Economic Area and the UK, you are asked for consent first.

Google's use of this data is described at policies.google.com/technologies/partner-sites. Buying Chapu Plus turns ads off.

Chapu Plus purchases

Chapu Plus is a one-time purchase handled by Google Play. Google processes the payment; we never see your card or payment details. The app only checks with Google Play whether Plus was bought on your account.

Reminders

Reminders are notifications scheduled on your phone. They are not sent from a server. You can change or turn them off in the app or in your phone's settings.

Backups, exports and sharing

Backup files, CSV exports and recap cards are created only when you ask for them. You choose where they go, for example your phone's files or another app. We do not receive a copy.

Ratings

Now and then Chapu may ask whether you'd like to rate it, using Google Play's built-in review window. Your rating goes to Google Play, not to us.

Deleting your data

Uninstalling Chapu, or clearing its data in your phone's settings, deletes everything it stored. Backup files you saved yourself stay where you put them.

Children

Chapu is a general audience app and is not directed at children under 13.

This website

getchapu.com has no accounts, no ads and no analytics, and it sets no cookies. Your browser remembers your language and light or dark choice in its own local storage, which never leaves your device.

Fonts are loaded from Google Fonts, so Google receives your IP address when the page loads. Like most websites, the server that hosts this site may keep short-lived technical logs.

Changes

If this policy changes, we will update this page and the date at the top.

Questions about privacy? Write to hello@getchapu.com

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