Flo vs Luna: which period tracker fits your life?

Flo is the biggest period-tracking app; Luna is a cycle tracker that lives right inside Telegram. Here's an honest, side-by-side look so you can pick what fits you.

Open Luna in Telegram

89 days Pro free

Side-by-side comparison

FeatureLunaFlo
Where it runsInside Telegram β€” no separate app to installStandalone Flo app (App Store / Google Play)
Sign-upYour Telegram account β€” nothing extraEmail / account registration
Free tierYes β€” core tracking is freeYes, with limits
Free trial89 days of ProShort trial, then paywall
Pro price99 Telegram Stars/month (~a few $) or 777/yearPremium tier, typically ~$7–10/month
Partner modeYes β€” your partner follows your cycle (Pro)No partner experience
Languages17, including CIS languagesMany, varies by region
Export for your doctorCSV / PDF with full history (Pro)Varies by plan

No app to install

Flo is a standalone app you download and create an account for. Luna runs inside Telegram β€” open it like a chat, with nothing extra to install or sign up for. For many people, especially in regions where Telegram is the default messenger, that's the difference between actually sticking with tracking and abandoning it.

A real partner mode

This is where Luna is genuinely different: your partner can follow your cycle in their own Telegram and get gentle, phase-aware tips on how to support you. Flo focuses on the individual user and doesn't offer a true partner experience.

Price and free trial

Luna's core tracking is free, with an 89-day Pro trial, then 99 Telegram Stars per month (a few dollars) or 777/year. Flo offers a free tier too, but its Premium subscription is typically around $7–10/month. If budget matters, Luna is hard to beat.

Privacy

Health data is sensitive. Flo settled with the US FTC in 2021 over allegations it shared users' health data with third parties like Facebook and Google β€” a case worth knowing about. Luna keeps data tied to your Telegram session and is not in the ad business. (Always read each app's current privacy policy yourself.)

When Flo might be the better choice

Flo has a huge editorial library, an anonymous community, and years of polish as a dedicated app. If you want the deepest content catalogue and a big community and you're happy inside a standalone app, Flo is a strong, mature product. Luna's bet is simpler: live where you already are, bring your partner in, and keep it affordable.

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.

Open Luna in Telegram

No install, real partner mode, 17 languages, 89 days of Pro free. Open Luna right inside Telegram.

Open Luna in Telegram

89 days Pro free