The 4 Best Period Tracker Apps in 2026
Tracking your menstrual cycle helps you anticipate your period, understand the symptoms of each phase and spot irregularities worth raising with a doctor. Period tracker apps make that easy, though it is worth looking at how they handle your data, which is especially sensitive here. In this guide we compare the 4 best period tracker apps in 2026.
Top apps for tracking your menstrual cycle
Cycle tracking apps with period and ovulation predictions, symptom and mood logging, and different approaches to privacy.
Top pick
Flo — Calendario Menstrual
Flo Health Inc. · Free (with purchases) · 100M+
Most complete
4.7
5.0M reviews
TopApps analysis
Flo is the most used period app in the world, with predictions that sharpen over time, detailed symptom logging and an anonymous mode to protect your data.
Flo is the world's most popular period tracker, trusted by over 460 million people. It reliably predicts periods, fertile days, and ovulation, and offers week-by-week pregnancy tracking.
Pros
- 100M+ downloads, world's most used app
- Week-by-week pregnancy tracking
- 100+ health professionals on the team
Cons
- Most useful features are paywalled
- Aggressive upsell to Premium subscription
- Many users report free features being removed with updates
Clue — Calendario Menstrual
Clue Period Tracker by BioWink · Free (with purchases) · 50M+
Best scientific approach
4.6
1.5M reviews
TopApps analysis
Clue stands out for its rigour: it works with universities on menstrual research and skips the patronising pink. Solid predictions and plain language.
Clue is the science-backed period tracker trusted by 10 million people. Based on scientific data, it predicts periods, fertile windows, and ovulation. Built by a women-led team in Berlin.
Pros
- Scientifically validated and ACOG-endorsed
- Women-led team in Berlin
- Tracks 200+ cycle symptoms
Cons
- Free version very limited after recent updates
- Excessive popups to subscribe
- Some users report 90% of features are paywalled
Last updated: 2026-06-25
Calendario Menstrual, Ovulación
Leap Fitness Group · Free (with purchases) · 10M+
Best free option
4.8
452K reviews
TopApps analysis
Leap's Period Calendar (4.8★) covers the essentials with no sign-up and no payment: predictions, symptoms and reminders in a simple interface.
Aplicación de Leap Fitness Group que calcula de manera fiable la menstruación y la ovulación, incluso con ciclos irregulares.
Pros
- No vende ni comparte datos
- Datos guardados localmente o en Google Drive
- Mejora su precisión con IA
Cons
- Algunos usuarios reportan anuncios inapropiados en la versión gratuita
- Solo disponible en Android
Last updated: 2026-03-12
Mi Calendario Menstrual
Simple Design Ltd. · Free (with purchases) · 100M+
Simplest
4.9
4.9M reviews
TopApps analysis
My Calendar gets straight to the point with a very clear interface and quick logging, ideal if you only want to know when your period is due and nothing more.
La app con la valoración más alta del mercado: 4,9★ con casi 5 millones de reseñas. Top 1 en Salud y bienestar en más de 43 países y más de 70 millones de usuarias de Android.
Pros
- 4,9★ — la valoración más alta de todas las apps de ciclo
- Top 1 en Salud en 43+ países
- Seguimiento completo: peso, temperatura, moco cervical, síntomas
Cons
- Interfaz algo sobrecargada de funciones
- Anuncios en la versión gratuita
Last updated: 2026-06-29
Frequently asked questions
Are period predictions reliable?
The more regular your cycle and the more months of data the app has, the sharper they get: with regular cycles they land within 1-2 days. With irregular cycles the predictions lose reliability, and there the app's value lies more in the log (something to show your gynaecologist) than in the prediction. Important: no app works as a reliable contraceptive method on its own.
What about the privacy of my period data?
That is the right question to ask: this is sensitive health data. Flo offers an anonymous mode that separates your data from your identity, and Clue is based in Europe (Germany) under GDPR, with a public record of refusing to hand over data. Simple apps with no sign-up, like Leap's calendar, have the advantage that the data stays on your phone. Always check that registration is optional and avoid signing in if you do not need syncing.
Why log symptoms as well as dates?
To uncover your patterns: headaches that always show up two days before, mood swings at ovulation, skin flare-ups in the luteal phase. Seeing it in black and white over a few cycles lets you plan ahead (and tell what is normal for you from what is not). On top of that, a log covering several months is genuinely useful information for a gynaecologist if you go in about irregularities, severe pain or fertility.
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