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WaterMinder vs FillMeUp!: catalog facts
WaterMinder	FillMeUp!
Freemium Free to download on iOS and Android.	Free Free and open source under AGPL-3.0-only.
Android, iOS	Android
One-tap drink logging Reminders spread through the day	One-tap water intake logging Customizable reminders that survive reboots
Covers only water intake, not wider nutrition No desktop or web version	Android app
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0-only
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.