Choose Soso if…
Families who prioritize first-period education, age-appropriate context, and an ad-free experience.
All comparisons
VS
Soso vs. Period Calendar
A focused first-period experience or a free calendar packed with features?
Period Calendar offers broad tracking, strong distribution, and anonymous use. Soso trades feature volume for a quieter, age-appropriate first-period experience without ads.
Reviewed Sep 17, 2026
VSChoose Period Calendar if…
People who want many tracking categories, fertility features, Wear OS support, backup, and anonymous use.
Side-by-side comparison
The criteria that matter most for early cycles.
CriterionSosôPeriod Calendar
Primary audience
Sosô:Tweens, first cycles, and their families
Period Calendar:General audience with fertility and pregnancy features
Before the first period
Sosô:A dedicated first-period journey with preparation content and quizzes
Period Calendar:It is presented as a period, ovulation, fertility, and pregnancy tracker, not as a first-period preparation journey.
Other life-stage features
Sosô:No fertility, pregnancy, or perimenopause modules
Period Calendar:Fertility, conception, contraception reminders, and pregnancy tracking are part of the listing.
Privacy
Sosô:No social feeds or chats; privacy is part of the product from the start
Period Calendar:The listing says no account or real-name registration is required, but also asks users to review its data-safety disclosures.
Advertising
Sosô:No ads
Period Calendar:Contains ads and in-app purchases.
Account and sync
Sosô:The main experience does not depend on an account
Period Calendar:No account or real-name registration is required; backup and sync options are available.
Cycle tracking
Sosô:Simple tracking for flow, mood, symptoms, and cycle history
Period Calendar:Periods, flow, ovulation, fertility, moods, symptoms, intimacy, and more.
Education
Sosô:Puberty, first periods, and early cycles in age-appropriate language
Period Calendar:Feature-led tracking rather than a dedicated first-period education journey.
Best fit when…
Sosô:The priority is a calm, age-appropriate first-period experience
Period Calendar:The priority is broader reproductive-health coverage
What changes in practice
Free is not the same as focused
Period Calendar has an impressive amount of functionality. Soso is for families who want fewer adult-oriented choices around a first period.
Recognize the real advantage
The competitor is stronger on scale, categories, Wear OS, and anonymous use. Soso should win on context, education, and calm.
Frequently asked questions
Does Period Calendar contain ads?
Yes. Its Google Play listing says “Contains ads” and “In-app purchases.”
Does Period Calendar require an account?
Its listing says account creation and real-name registration are not required. It also describes backup and sync options.
Start the first cycle without drama
A gentle, educational and ad-free space to learn and track at your own pace.
Download SosoSources and transparency
Each source says what was checked and when it was consulted.
Soso official site
The site presents Soso as a gentle, educational period tracker for first-cycle journeys.
Accessed Sep 17, 2026
Soso on the Brazil App Store
The listing describes an age-appropriate product without adult content or ads, and lists R$99.90 yearly and R$24.90 monthly plans.
Accessed Sep 17, 2026
Period Calendar on Google Play
The official listing states that the app contains ads, offers in-app purchases, supports fertility and pregnancy tracking, and does not require account creation.
Accessed Sep 17, 2026