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Comparison

PinkyBloom vs Natural Cycles: Sense termòmetre

Last updated: February 2026·Natural Cycles: $21.99/mo or ~$149.99/yr (raised from $14.99/mo in June 2025)·PinkyBloom: free tracker, optional Plus $39.99/yr

Our verdict

Natural Cycles is an FDA-cleared contraceptive app that requires daily temperature readings and costs up to $149.99/yr. PinkyBloom delivers smarter cycle intelligence with no hardware requirements, and its tracker is free.

Feature comparison

FeaturePinkyBloomNatural Cycles
Price per yearFree tracker; optional Plus $39.99/yr~$149.99/yr (or $21.99/mo)
AI assistant
Voice logging
AI mood forecasts
Data storageStored on your phoneCloud-based
E2E encrypted partner sharing
Safety Mode
Screenshot import from other apps
Doctor visit report generatorYes (Plus)
Health vault with Face ID
AI-indexed medical records
Wearable data + AI integrationYes (Apple Health)Oura Ring + thermometer
Home screen forecast widgetsYes (3 sizes)Basic widget
AdsNo ads everNo ads
Account requiredNo account neededAccount required

Privacy and data handling

Natural Cycles occupies a unique position as an FDA-cleared digital contraceptive (Class II medical device, 510(k) K173464). This regulatory status gives it clinical credibility, but it also means the company is required to retain user data for regulatory compliance. You can't fully exercise a "right to deletion" when federal regulations mandate data retention.

All user data — including daily basal body temperature readings, sexual activity logs, LH test results, and fertility status — is stored on Natural Cycles' cloud servers. An account with personal information is required. While the company states it doesn't sell data to third parties, the cloud-based architecture means your most intimate health data exists on servers you don't control.

PinkyBloom takes the opposite approach. Your cycle log is stored on your phone, protected by your phone's own encrypted storage and passcode — not in an account on our servers. No account is needed and no regulatory obligation that forces data retention. You own your data completely, and you can delete it at any time with no exceptions.

AI and intelligence

Natural Cycles' core intelligence is built around temperature-based fertility detection. The algorithm analyzes daily basal body temperature readings (and optionally LH test results) to determine fertile and non-fertile days. It's clinically validated and effective for its specific use case — but it requires consistent daily temperature measurement, either with a basal thermometer or an Oura Ring.

PinkyBloom's AI goes far beyond temperature-based predictions. PinkyBloom draws on multiple data streams — cycle history, symptoms, mood patterns, sleep data from Apple Health, and natural language input from voice logging — to generate comprehensive health insights. AI mood forecasts predict emotional patterns days in advance. The doctor visit report generator creates professional health summaries for your healthcare provider.

The practical difference is significant. Natural Cycles requires you to take your temperature at the same time every morning before getting out of bed. PinkyBloom lets you say "I had cramps and felt tired today" while making coffee. One demands rigid daily discipline; the other adapts to your life.

How to switch from Natural Cycles to PinkyBloom

Canviar de Natural Cycles a PinkyBloom és senzill. Fes una captura de pantalla de la vista del calendari de Natural Cycles i utilitza la funció d'Importació de Captures de Pantalla de PinkyBloom. El motor OCR extreu automàticament la teva història del cicle, incloent dates de període, marcadors d'ovulació i finestres fèrtils.

Tingues en compte que PinkyBloom no és un dispositiu anticonceptiu aprovat per la FDA. Si utilitzes Natural Cycles específicament per al control de la natalitat, consulta el teu proveïdor d'atenció sanitària abans de canviar. PinkyBloom proporciona prediccions del cicle i informació sobre la fertilitat, però és una aplicació de seguiment de la salut, no un dispositiu mèdic.

Dit això, molts usuaris de Natural Cycles estan principalment interessats en el seguiment del cicle i la informació sobre la salut més que en la certificació anticonceptiva. Si aquest és el teu cas, PinkyBloom ofereix significativament més funcions — assistent d'IA, registre de veu, previsions d'humor, informes mèdics — sense el requisit de temperatura diària.

Pricing and value

Natural Cycles recentment ha augmentat els seus preus a $21.99/mes o aproximadament $149.99/any (augmentant de $14.99/mes abans de juny de 2025). Això el converteix en una de les aplicacions de seguiment del període i la fertilitat més cares del mercat. Afegiu el cost d'un termòmetre compatible o un Oura Ring, i la inversió total és substancial.

El rastrejador de PinkyBloom és gratuït i no requereix maquinari. No hi ha cap termòmetre per comprar ni cap anell per carregar.

En tres anys, Natural Cycles costa aproximadament $450 més maquinari. El rastrejador de PinkyBloom no costa res, i el Plus opcional costa $39.99 l'any. Si bé l'aprovació de la FDA de Natural Cycles és valuosa per als usuaris que necessiten anticoncepció clínicament validada, la gran majoria de les necessitats de seguiment del cicle es satisfan millor amb el conjunt de funcions més ampli de PinkyBloom.

Frequently asked questions

Ready to switch to PinkyBloom?

The tracker is free; Plus and Baby are optional. No ads, never sold. Screenshot your Natural Cycles calendar and import your history in seconds.

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