Comparison
Flo vs Period Calendar 2026: Privadesa, Funcions i Preu Comparats
Our verdict
Flo (440M+ users) was accused of sharing data with Google and Meta. Period Calendar (300M+ claimed users) claims no data collection while running Google Ads. The two most-downloaded period trackers both have privacy contradictions. PinkyBloom resolves the contradiction entirely — zero ads, never sold.
Flo vs Period Calendar vs PinkyBloom
| Feature | Flo | Period Calendar | PinkyBloom |
|---|---|---|---|
| Price | ~$49.99/yr premium | Free with ads + IAP | Free |
| Users | 440M+ | 300M+ claimed | Growing |
| Data storage | Cloud (Flo servers) | Claims local storage | Stored on your phone |
| Privacy track record | Class action settled 2025; Flo paid $8M | Ad SDK contradictions documented | Never sold, no ads; partner sharing end-to-end encrypted |
| AI assistant | Cloud-based chatbot | Built-in AI assistant (Pinky) | |
| Voice logging | |||
| Mood forecasts | |||
| Content library | Thousands of articles | Basic tips | AI-generated insights |
| Account required | Email required | Optional | No account needed |
| Ads | Ads in free tier | Yes (Google Ads/AdMob) | No ads ever |
| Doctor visit reports | |||
| Languages | Many | Many | 71 languages |
Overview
Flo i Period Calendar de Simple Design són, per nombres de descàrregues, els dos rastrejadors de període més populars mai creats. Flo afirma tenir 440 milions d'usuaris; Period Calendar afirma tenir 300 milions. Junts representen gairebé tres quarts d'un miler de milions de comptes que rastregen dades de salut reproductiva.
Les aplicacions són dramàticament diferents en l'enfocament. Flo és una plataforma de salut integral amb chatbot d'IA, fòrums comunitaris, contingut d'experts i subscripcions premium. Period Calendar és un rastrejador senzill, sense complicacions: registra el teu període, veu prediccions, rastrega símptomes. Flo s'adreça al consumidor de salut compromès; Period Calendar s'adreça a l'usuari que vol simplicitat per sobre de tot.
El que comparteixen és una bretxa de privadesa. La de Flo està documentada en un tribunal federal. La de Period Calendar està incrustada en el seu model de negoci: afirma no recopilar dades mentre executa SDKs publicitaris de Google que recopilen dades per disseny.
Privacy comparison
Flo's privacy failures are the most documented in the industry. An FTC order in 2021, a class action Flo settled for $8M in 2025, and a California jury verdict against Meta for eavesdropping on Flo users' data. Flo denies wrongdoing, and no court has found that it broke the law.
Period Calendar's privacy situation is different but concerning. The app markets itself with bold "we don't collect or store your data" claims. But it's ad-supported through Google Ads, DoubleClick, and AdMob. Privacy International documented heavy third-party network traffic to Google advertising services despite the local storage claims. Advertising SDKs collect device identifiers, usage patterns, and behavioral data by definition — that's how ad targeting works.
The pattern is the same: both apps say one thing about privacy and do another. Flo's contradiction ran for nearly three years before the press caught it. Period Calendar's contradiction is structural — you cannot simultaneously claim "no data collection" and run ad networks that require data collection to function.
PinkyBloom eliminates the contradiction. No ads means no ad SDKs. No accounts means no identity linkage. Your cycle log is stored on your phone, protected by your phone's own encrypted storage.
Features and intelligence
Flo és rica en funcions: més de 70 símptomes, chatbot d'IA, fòrums comunitaris, mode embaràs, contingut de més de 120 experts mèdics. És una plataforma de salut, no només un rastrejador.
Period Calendar és senzill en funcions: registre del període, estimacions d'ovulació, rastreig de símptomes i vista de calendari. La versió de pagament elimina els anuncis. És una eina de registre que fa les bases de manera fiable.
Entre les dues, Flo ofereix clarament més. Però les funcions de Flo vénen amb processament al núvol, subscripcions i violacions de privadesa documentades. La simplicitat de Period Calendar ve amb anuncis i arquitectura llegada.
PinkyBloom ofereix capacitats al nivell de Flo: assistent d'IA, pronòstics d'humor, cofre de salut, informes de metges, amb simplicitat al nivell de Period Calendar: no es necessita compte, funciona immediatament. El registre de veu significa rastreig sense mans sense menús manuals.
Pricing comparison
Flo charges ~$49.99/year for premium. Period Calendar is free with ads and optional paid upgrades. The cost difference is significant — Flo is among the most expensive period trackers; Period Calendar is among the cheapest.
But the real cost includes what you pay beyond money. Flo costs subscriptions and, for nearly three years, your data. Period Calendar costs your attention (ads) and potentially your data (ad SDKs).
No ads, no hidden data costs. More features than Flo, simpler than Period Calendar, and never sold.
There's a better option
The two most-downloaded period trackers both have privacy contradictions — Flo's documented by the FTC, Period Calendar's embedded in its ad model. PinkyBloom is the zero-contradiction alternative: no ads, no account, never sold. More features than Flo, simpler setup than Period Calendar.
