Compare software

drip vs Clue: catalog facts
drip	Clue
Free Free and open source.	Freemium Free app with a paid subscription for additional features.
Android, iOS	Android, iOS
All data stays on the device Supports the symptothermal method for fertility awareness	Cycle predictions and personalised insights Available on both iOS and Android
No sync between devices Fertility features depend on careful manual tracking	Some features require a subscription Sensitive health data is handled by a commercial service
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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