Open Luna

Natural Cycles vs Luna: different tools, different goals

Natural Cycles is an FDA-cleared birth-control app built around daily temperature; Luna is a general cycle tracker in Telegram. They serve different needs β€” here's how to tell which you want.

Open Luna in Telegram

89 days Pro free

Side-by-side comparison

FeatureLunaNatural Cycles
Main purposeCycle tracking, predictions, education & partner supportFDA-cleared birth control (contraception)
Where it runsInside Telegram β€” no installStandalone app
Daily measuringNot requiredDaily basal body temperature required
Free tierYes β€” core tracking is freeSubscription required
Free trial89 days of ProVaries
Partner modeYes (Pro)No
Languages17, incl. CIS languagesSeveral

They solve different problems

Natural Cycles is regulated as a contraceptive β€” you take your temperature daily and it tells you fertile vs non-fertile days for birth control. Luna is a general cycle tracker: predictions, phase education, mood, tips and partner support. If you need a contraceptive method, that's Natural Cycles' lane; for everyday tracking and understanding your body, that's Luna.

Effort and cost

Natural Cycles needs daily temperature measurement and a paid subscription to function as contraception. Luna needs no daily device, keeps core tracking free, and offers Pro after an 89-day trial.

Partner support

Luna's partner mode lets your partner follow your cycle and support you. Natural Cycles is focused on its contraceptive function.

When Natural Cycles is the right tool

If your goal is hormone-free contraception and you're willing to measure your temperature daily, Natural Cycles is purpose-built and FDA-cleared for that β€” Luna is not a contraceptive and shouldn't be used as one. For everyday tracking, prediction, education and partner support, Luna is the simpler everyday companion.

Frequently asked questions

What's a healthy cycle length?

Cycles between 21 and 35 days are healthy. Average is 28 days. What matters more than the exact number is consistency from month to month.

When should I track my cycle?

Daily, even if you only log the period start date. After 1-2 cycles, Luna's predictions become accurate. Adding mood, symptoms, and cervical mucus makes them sharper.

Is it safe to skip my period using birth control?

Yes, modern continuous birth control regimens are safe and supported by major medical bodies. The withdrawal bleed week was historical convention, not medical necessity.

Can stress mess up my cycle?

Yes. Chronic stress can delay ovulation, lengthen cycles, or stop periods (hypothalamic amenorrhea). Reducing stress + adequate calorie intake usually restores cycles.

How is Luna different from other trackers?

Luna runs entirely inside Telegram β€” no app to download. Predictions adapt to your actual data. Privacy-first: data never sold. Free for the first 89 days, then optional Pro.

When should I see a doctor about my cycle?

Cycles consistently shorter than 21 days or longer than 35, periods longer than 7 days, severe pain that disrupts daily life, bleeding between periods, or no period for 3+ months without pregnancy.

Sources

  1. American College of Obstetricians and Gynecologists. Your menstrual cycle.
  2. Royal College of Obstetricians and Gynaecologists (UK). Painful periods.
  3. NHS UK. Irregular periods β€” causes and when to see a GP.
  4. Harvard Medical School. Women's health publications.

Read more from our guide

Open Luna in Telegram

Everyday cycle tracking, predictions and partner support inside Telegram. 89 days of Pro free.

Open Luna in Telegram

89 days Pro free