Privacy policy
Last updated November 14, 2026
The short version: your caffeine and sleep log never leaves your device. There's no account, and we can't see, sell or share your log because we never receive it.
What stays on your device
Everything you enter in Afterbuzz is saved in your browser's local storage on the device you're using:
- The drinks you log (name, caffeine amount, quantity and time)
- Your sleep times and sleep ratings
- Your settings, such as bedtime, sensitivity and theme
This data is never sent to us or anyone else. Afterbuzz keeps the last 31 days and removes older entries automatically.
What we don't do
- No accounts, sign-ins or email collection
- No advertising or tracking cookies
- No selling or sharing of personal data
Hosting
Afterbuzz is served by Cloudflare. Like any website host, Cloudflare receives technical information needed to deliver the site and protect it from abuse, such as your IP address, browser type and the pages requested. See Cloudflare's privacy policy.
Exports and backups
When you export your log, Afterbuzz creates a file on your device. Where that file goes afterwards (for example, cloud storage or email) is up to you and covered by those services' own policies.
Deleting your data
Use Settings › Clear all data in the app, or clear this site's data in your browser settings. Since we hold no copy, there's nothing for us to delete on our side.
Children
Afterbuzz isn't directed at children under 13.
Changes
If this policy changes, for example if we add analytics or ads, we'll update this page and the date above before the change takes effect.
Contact
Questions? Email hello@afterbuzz.app.