JustPeriod.
AiVax Health & Fitness iPhoneiPadiPod touch
JustPeriod. is a free Health & Fitness app for iPhone and iPad by AiVax. Requires iOS 17.0. Updated October 7, 2026.
- Price
- Free
- on the App Store
- Size
- 20 MB
- Age 12+
- Updated
- Oct 7
- 2026 · v1.1.2
Screenshots
About JustPeriod.
JustPeriod. is a cycle tracker built on two simple principles: your cycle is nobody's business but yours, and the people close to you can be there — only on your terms. SHARE YOUR CYCLE, OR FOLLOW YOUR PARTNER'S • Connect with a one-time code — no sign-ups, no accounts to create. • Both partners can track their cycles side by side — for every kind of couple, including those where you both have a cycle. • Your partner sees exactly what you allow: days, symptoms, predictions or the current phase — every item is set separately. • Send a sign of support in one tap, and on period days share what you'd like, in your own words. • A quiet widget for the Home Screen and Lock Screen: a name, a phase and a countdown, and nothing for anyone nearby to read. • Turn sharing off at any moment — the data disappears from your partner's phone straight away. FOR REAL BODIES AND REAL LIFE • Dedicated modes for PCOS, endometriosis, fibroids and PMDD. • Predictions that account for your contraception (pill, IUD, implants and other methods). • Change your condition or your method at any time — the forecast adapts to the new answers immediately. • Honest support for an irregular cycle, with no illusion that a body should run like clockwork. • No hints about pregnancy and no pressure around fertility — there is simply nothing here for ovulation or conception. STATISTICS WITHOUT EMPTY PROMISES • A clear summary, your cycle history and a cycle map — all on one screen. • Average cycle and period length come with their real spread, not a single "perfect" number. • The intensity scale shows your usual flow and marks the days it departs from it. • The cycle map shows which days particular symptoms tend to fall on. PRIVACY AT THE FOUNDATION • All your data is kept on your device alone, protected by iOS encryption. • Optional sync and shared access are protected by end-to-end encryption: we could not read your data even if we wanted to. • No accounts, no ads, no analytics. Your data is never passed to anyone. • Face ID / Touch ID / PIN to get in, and an instant privacy screen. • Protected export with a password (PDF, CSV, JSON) and encrypted backups. • A simple, quick move of your history from Flo, Clue or WomanLog in a couple of minutes. EVERY BASIC FEATURE, AT ITS BEST • A calendar and predictions that fit your settings completely. • More than 20 built-in symptoms, and room to create your own. • Private notes on any day — kept in your history and included in exports. • Handy widgets for the Home and Lock Screens, plus an Apple Watch app. • Discreet reminders that give away no details in notifications. HONEST, TRANSPARENT PRICING Every basic feature — tracking, calendar, statistics, import, export, backups and reminders — stays free forever. Shared access and themes open with a single lifetime purchase: no subscriptions, no hidden charges. JustPeriod. Know your body. On your terms.
What’s new
Version 1.1.2 · Updated October 7, 2026
Your partner's cycle in a widget, a note on any day, and predictions built from your own cycles. Plus: a rebuilt Partner tab and stronger protection for sync. NEW • Partner widget on your Home Screen and Lock Screen: their phase or cycle day, days until their period, and what they'd love right now. The medium size adds today's symptoms. • A note on any day of the calendar, even without a period or symptoms. Notes travel with your exports, backups and sync. • Cycle length, health and contraception can be changed in Settings → Tracking. Predictions update right away. PARTNER TAB • Everything on one screen: your partner's cycle, who you share yours with, and invitations that haven't been accepted yet. • The calendar folds with a swipe, like on Home. Tap the month to pick a date. • If sharing is paused, you can see on whose side and what to do. PREDICTIONS • After two logged cycles, predictions follow your own history. Recent cycles count for more. • Phases are not named when a cycle is shorter than 20 days or you use hormonal contraception. You see the cycle day instead of a guess. SYNC BETWEEN YOUR DEVICES • The date and status of every record are sealed together with the data. Nothing in between can change them. • Update JustPeriod on all of your devices: sync with a device on an older version pauses until it is updated. Your data is kept safe.
App privacy
The developer, AiVax, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Health & Fitness: Health
Used for: App Functionality
Alternatives to JustPeriod.
Looking for apps like JustPeriod.? Here are 6 similar apps on the App Store. The highest rated is LadyOne (5.0/5), and all 6 are free to download.
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Lumi — Cycle Calendar
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| JustPeriod. | – | Free | October 7, 2026 | |
| Lumi — Cycle Calendar | – | Free | Oct 12, 2026 | Compare |
| Perirosa: Perimenopause & HRT | – | Free | Aug 29, 2026 | Compare |
| Comfi: Period & Cycle Tracker | – | Free | Oct 8, 2026 | Compare |
| Selene - Period Tracker | – | Free | Feb 11, 2026 | Compare |
| LadyOne | 5.0 / 5 (2) | Free | Oct 5, 2026 | Compare |
| Rutuma Period & Cycle Tracker | – | Free | Sep 29, 2026 | Compare |
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