Built for charting BBT
- Daily BBT chart with an automatically drawn coverline.
- Multi-cycle overlay to compare temperature patterns across cycles.
- °F or °C, your choice.
- Cervical mucus and LH tests tracked alongside, for a fuller fertility-awareness picture.
- Correlations between BBT and the other things you log, shown as statistics — never as medical conclusions.
Private, offline, your choice of plan
Fertility data is deeply personal. Hoo-Ha keeps it on your device only — no account, no servers, fully offline, encrypted with AES-GCM. Try free for 14 days, then $1.99/mo, $19.99/yr, or $39.99 once for lifetime — every plan unlocks everything.
Important: Hoo-Ha is a tracker, not contraception. It is
not a form of birth control and must not be used to prevent pregnancy. Charts and estimates are based on the data you log and are not medical advice.