Open Luna

Stardust vs Luna: two privacy-minded trackers

Stardust is a privacy-focused (and astrology-flavoured) period app; Luna is a privacy-conscious tracker that lives in Telegram with a partner mode. Here's the honest comparison.

Open Luna in Telegram

89 days Pro free

Side-by-side comparison

FeatureLunaStardust
Where it runsInside Telegram β€” no separate app to installStandalone Stardust 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

Where they run

Stardust is a standalone app you install. Luna runs inside Telegram β€” nothing to download, no separate account.

Privacy approach

Both apps position themselves around privacy. Luna keeps data tied to your Telegram session and isn't an advertising business. As always, read each app's current privacy policy to judge for yourself.

Partner mode

Luna lets your partner follow your cycle and get supportive tips. Stardust focuses on the individual user.

Languages

Luna ships in 17 languages including CIS languages with localized guide content; Stardust's language coverage is narrower.

When Stardust might be the better choice

If you specifically enjoy Stardust's astrology-themed experience and want a dedicated privacy-first app, it's a distinctive choice. Luna's focus is practical: live in Telegram, support partners, and stay multilingual and 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.

Read more from our guide

Open Luna in Telegram

Privacy-conscious cycle tracking in Telegram, with a partner mode and 17 languages. 89 days of Pro free.

Open Luna in Telegram

89 days Pro free