# HeySis: Cycle & Period Tracker — Ovulation Calendar & AI Sister > AI-powered period and cycle tracker with a conversational interface and privacy focus. (iPhone/iPad app by Danila Zakharov.) - Source: https://appshunter.io/ios/app/heysis-cycle-and-period-tracker/id6786661657 (this page in markdown: same URL + `.md`) - Developer: [Danila Zakharov](https://appshunter.io/developer/1877941759) - Category: Health & Fitness, Medical - Price: Free with in-app purchases - Rating: 4.50/5 from 36 App Store ratings · 28 written reviews indexed - Age rating: 12+ - Requires: iOS 26.0 · 96 MB - Languages: Russian, Hindi, Slovenian, Vietnamese, American English, Arabic, Hungarian, Dutch, Greek, Danish and 23 more - Released: 2026-07-27 - Data updated: 2026-09-12 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/heysis-cycle-and-period-tracker/id6786661657/reviews.md ## What is HeySis? HeySis is a period and cycle tracker that feels less like an app and more like texting an older sister who remembers your cycle, your mood, and how you actually feel. Open it and she just asks: “Hey! How are you today?” Most trackers give you charts. HeySis gives you someone to talk to. Meet Mia, your AI companion who knows where you are in your cycle and explains what’s going on in plain, human words — no hormone lectures, no pressure. WHY WOMEN KEEP HEYSIS • A warm daily check-in instead of a 20-field form. • Mia, an AI friend you can actually chat with about your period, mood, PMS and body. • “This is normal” — honest reassurance, and a gentle nudge to see a doctor when something truly deserves a look. • Private by design: your cycle data is yours. Stored on your device, heading toward end-to-end encryption. No ads, never sold. CYCLE & PREDICTIONS • Period start, length, cycle history and regularity. • Predictions for your next period, ovulation and the fertile window. • Late days handled calmly — no panic. • A phase calendar — menstrual, follicular, ovulation, luteal — so “off” days finally make sense. LOG IN ONE TAP • Period and flow — one tap from the home screen. • Mood, energy and mood swings. • Symptoms: cramps, headache, fatigue, acne and dozens more. • Discharge, ovulation and pregnancy tests. • 90+ options — and none of them required. Log only what matters to you. ASK MIA • “Why is my period late?”, “Is this PMS?”, “Why do I get cramps?” — ask in everyday words. • Mia answers around your own data: where you are in the cycle, what it may be, and what to watch next. • Before any online AI is used, HeySis shows what limited summary would be sent and asks your consent — or keep Mia fully on-device. • Mia never “chats through” alarming symptoms — she gently points you to a doctor instead. GENTLE REMINDERS • A heads-up before your period, on the expected day, and if it’s running late. • Optional PMS and fertile-window reminders. • At most one a day, in Mia’s warm voice — never any personal data in the text. SHARE WITH YOUR PARTNER — BUILT IN • Invite your partner or a close friend with a simple code. • They see your current phase, today’s mood and concrete “how to support her” tips — never your symptoms or raw logs. • They can send warmth back with reaction stickers. • Free and built in — no separate partner app, no subscription. A REPORT FOR YOUR DOCTOR • One tap builds a clear PDF: last 6 cycles, regularity, key findings, symptom timing, 30-day diary. • Made fully on your phone; it leaves only if you share it. Your chats with Mia are never included. SELF-CHECKS & SHORT, HUMAN ARTICLES • Gentle self-checks: late period, strong pain, heavy bleeding, unusual discharge and more. • Quick reads on phases, PMS, pain, ovulation and discharge — backed by trusted sources (NHS and others). • Plain guides to PCOS, endometriosis and PMDD. SWITCHING FROM ANOTHER TRACKER? • Import your history from Flo, Clue or an Apple Health export in a minute — your existing days are never overwritten. APPLE HEALTH — ONLY WITH YOUR PERMISSION • Optionally, Mia considers steps, sleep and temperature from Apple Health as background context. • Writes period flow and selected symptoms only HOW HEYSIS IS DIFFERENT • Not a dashboard — a conversation. One gentle step at a time. • Not “track everything” — just what helps Mia understand you. • Not science overload — a friend who keeps it simple and warm. • No streaks, no guilt, no pressure to log every day. HeySis is for anyone who wants to understand their cycle without the overwhelm — regular or all over the place, curious about your body, riding out PMS, or just tired of facing it alone. Mia is not a doctor and doesn’t diagnose. HeySis is educational and not a medical device: predictions are approximate, are not contraception, and don’t replace professional medical advice. Terms of Use (EULA): https://heysiss.vercel.app/terms ## Key features - AI-powered cycle and period tracking - Daily conversational check-ins - Personalized insights and explanations - Doctor-friendly PDF reports - Partner sharing with support tips - Private data storage with encryption focus - Gentle self-checks and educational articles ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | HeySis Premium Monthly | $5.99 | per month | | HeySis Premium Yearly | $24.99 | per year | | HeySis Premium Yearly | $24.99 | per year | | HeySis Premium Monthly | $5.99 | per month | | HeySis Premium Yearly | $24.99 | per year | | HeySis Premium Monthly | $5.99 | per month | ## Recent user reviews (10 of 28) All indexed reviews: https://appshunter.io/ios/app/heysis-cycle-and-period-tracker/id6786661657/reviews.md ### 5/5 — Лучшее приложение *2026-09-08* Очень понравилось данное приложение, пользуюсь с большим удовольствием. Красивый визуал, очень логичный и понятный интерфейс, в целом календарь получился очень заботливый и милый, все удобно и понятно. Особенно порадовало, что можно выгрузить пдф-файл для врача. И очень понравилась информационная лента с рекомендациями для каждой фазы цикла. **Developer response:** Спасибо большое за отзыв! Очень рад, что все понравилось. ### 5/5 — Better communication tool *2026-08-11* Instead of awkward talks, I just update my status. My partner checks it and understands what kind of day I’m having. The little support interaction feels simple but keeps communication open. ### 5/5 — Fun with my close friends *2026-08-10* I connected with two close friends and we compare cycle phases. It’s surprisingly fun to see when we’re all in the same mood zone. We tap support and send memes when someone logs cramps or stress. ### 1/5 — Plagiarism *2026-08-10, version 1.2* 🙄 ### 5/5 — Easy to share updates *2026-08-09* The interface makes it simple to share mood changes with my boyfriend. When I mark that I’m overwhelmed, he reacts with the support feature and offers help. It turns mood swings into teamwork instead of conflict. ### 5/5 — Makes PMS less lonely *2026-08-08* I used to just deal with PMS quietly. Now my partner can see when I’m struggling and sends support right away. Sometimes he asks what snack I’m craving because he saw my status. It feels attentive. ### 5/5 — Perfect for busy couples *2026-08-07* We both work crazy hours, so quick updates help. I log symptoms and moods, and he responds with a tap or short message. It keeps us connected even when we barely see each other during the week. ### 5/5 — Brings more empathy *2026-08-07* Tracking my cycle is useful, but sharing it changed how my partner reacts. When he sees I’m in a sensitive phase, he’s gentler. The support button gives him an easy way to show he cares without overdoing it. ### 4/5 — Planning around my cycle *2026-08-06* I use it to predict my period, but also to let my partner know when I might not feel social. He sees my mood and adjusts plans without me feeling guilty. The small interaction tools make it light instead of serious. ### 4/5 — Cute way to check in *2026-08-06* Every morning I update how I’m feeling. My partner checks it during his break and sends support through the app. It sparks little conversations about what I might need that day, which feels thoughtful. ## Frequently asked questions about HeySis ### Does HeySis have ads? No, HeySis is ad-free. The app prioritizes a clean and uninterrupted user experience, with no advertisements present. ### What is the pricing for HeySis Premium? HeySis Premium offers two subscription plans: $3.99 per month or $19.99 per year. Both plans include a 14-day free trial. ### How does HeySis protect user privacy? HeySis is designed with privacy in mind, storing cycle data on your device and working towards end-to-end encryption. Your data is not sold and is private by design. ### Can I share my cycle information with my partner using HeySis? Yes, HeySis has a built-in feature to share your current phase, mood, and support tips with a partner via a simple code. This feature is free and does not require a separate app or subscription. ### What kind of reports can HeySis generate for doctors? HeySis can generate a clear PDF report with your last 6 cycles, regularity, key findings, symptom timing, and a 30-day diary. This report is created on your phone and only shared if you choose to export it. ### How often is HeySis updated? The latest version of HeySis is 1.2, which was last updated on August 8, 2026. Updates typically occur to improve features and reliability. ### What age rating does HeySis have? HeySis has an age rating of 12+, making it suitable for teenagers and adults. This rating reflects the nature of the health and cycle tracking information provided. ### Can I import my data from other period trackers into HeySis? Yes, HeySis supports importing your history from popular trackers like Flo and Clue, as well as from an Apple Health export. This allows for a seamless transition to HeySis. ## Version history (last 5 releases) ### 1.6 — 2026-09-11 New widgets, refreshed stories and articles, pill reminders, and an updated partner mode. Daily check-ins are easier. Cycle predictions now update when you change your cycle length. ### 1.5.8 — 2026-09-05 What's new: Home now suggests the symptoms you usually have in this phase, right above the card of the day — one tap logs them. And the Circle screen that could get cut off after the keyboard is fixed. — Mia & the HeySis team ### 1.5.7 — 2026-08-30 This update restores the full partner page: reactions, history and member details now appear as expected. We also improved translations, larger text support and interface stability. — Mia & the HeySis team ### 1.5.6 — 2026-08-27 Hi! Premium has a cheaper way in now: a one-time discount on the yearly plan — the same HeySis, just less per month. Plus small fixes throughout the app. If HeySis makes your days a little easier, a rating means the world. — Mia & the HeySis team ### 1.5.5 — 2026-08-26 Hi! HeySis has a new card in your daily feed — «Good news»: real wins around periods, from new laws and court rulings to research and sport, each one with its source. Plus small fixes throughout the app. If HeySis makes your days a little easier, a rating means the world. — Mia & the HeySis team ## More apps by Danila Zakharov - [Muslim Bro: Prayer Times](https://appshunter.io/ios/app/muslim-bro-prayer-times/id6759301161) All apps by Danila Zakharov: https://appshunter.io/developer/1877941759 ## Related topics [period menstral cycle tracker](https://appshunter.io/ios/topics/period-menstral-cycle-tracker) · [vespera moon cycle](https://appshunter.io/ios/topics/vespera-moon-cycle) · [calendario de periodo menstrual](https://appshunter.io/ios/topics/calendario-de-periodo-menstrual) · [clearblue period](https://appshunter.io/ios/topics/clearblue-period) · [period widget](https://appshunter.io/ios/topics/period-widget) · [menstruacion regla](https://appshunter.io/ios/topics/menstruacion-regla) · [phase x tracker](https://appshunter.io/ios/topics/phase-x-tracker) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-12.*