Natural Cycles or Lena? They do different jobs.
If you want hormone-free birth control, pick Natural Cycles: it is cleared for that, and Lena is not contraception. Pick Lena if you want to understand your cycle and symptoms, get answers from your own history, and message a real doctor.
Lena, in four numbers.
- Typical doctor reply
- 15 min
- A real doctor in the same app. Typical, not guaranteed.
- Signals in FertiScore
- 40+
- Turned into one clinical score, and a plan.
- Questionnaires
- 7
- Reviewed by Lena’s medical team, each ending in a report.
- Languages
- 5
- English, French, Arabic, Spanish and Portuguese.
Side by side.
Lena
Natural Cycles
LenaUnderstanding your own health: cycle, symptoms, fertility, perimenopause.
Natural CyclesBirth control and pregnancy planning based on body temperature.
LenaNo. Lena’s predictions are estimates, not contraception.
Natural CyclesYes: FDA-cleared in the US and CE-marked in Europe as birth control.
LenaYour phone. Apple Health or Health Connect sync is optional and read-only.
Natural CyclesBody temperature from its own band, a basal thermometer or a compatible wearable.
LenaDoctor Chat: a real doctor in the same app, typically replying within 15 minutes (Premium).
Natural CyclesIts store listing mentions no doctor consultation in the app.
LenaAsk anything about your cycle, symptoms, sleep, food or mood. Lena answers from your own history and gives sources for medical claims.
Natural CyclesA fertility status updated daily: not fertile, or use protection.
LenaCycle tracking, check-ins, reports and the library are free. Premium adds unlimited chat with Lena, and Doctor Chat.
Natural CyclesA monthly or annual subscription unlocks the core features.
Natural Cycles’s side is taken from its own website and store listing, checked in November 2026. Natural Cycles and its icon are trademarks of their owner; LenaCare is not affiliated with it.
See it for yourself.
Real recordings of the Lena app, not mock-ups.
Which one is for you?
Pick Lena if
- You are not looking for contraception.
- You want answers about symptoms, sleep, mood and your cycle.
- You want to message a real doctor without leaving the app.
Pick Natural Cycles if
- You want hormone-free birth control.
- You are happy to measure your temperature most days.
- You want a daily fertile or not-fertile status.
Good to know.
Not seeing your question? The help center has the rest.
Lena is on your phone in a minute.
