Pemsi: Period & Cycle Tracker
Ovulation, fertility, AI Coach
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Pemsi is a calm, evidence-based period tracker and cycle calendar built around how you actually feel through the month — not just the days bleeding starts.
PERSONALISED PREDICTIONS
• Calibrated cycle predictions that learn from your history — a Bayesian blend of your real data with population baselines, not just "average ± a guess".
• Ovulation and fertility window detection that respects OPK tests, cervical mucus and BBT signals when you log them.
• 6-month forecast (Pemsi Pro) so you can plan trips, deadlines and life around your cycle.
SYMPTOM & MOOD JOURNAL
• 30+ tracked patterns: fatigue, cramps, mood, sleep, anxiety, focus, libido, cravings and more.
• 20-second daily check-in that remembers what helped past cycles.
• Apple Health sync (Pemsi Pro) — your data flows both ways, your way.
CALENDAR WITH LUNAR CONTEXT
• Monthly swipe navigation, predicted vs confirmed period days with soft pastel PMS / fertility / ovulation overlays.
• NEW: a daily moon-phase badge on every day — all 8 lunar phases, computed from astronomical formulas right on your device, no server calls.
• Smart planner that flags hard days before you schedule heavy work, so you can move things before they bite.
AI COACH (PEMSI PRO)
Ask why you feel tired today, what to eat, how to move — get warm, evidence-based answers keyed to your phase and your last 30 days of symptoms. No horoscopes, no preaching, just tailored guidance. Speaks English, Ukrainian and Russian.
WELLNESS LIBRARY
• 5 guided breath patterns (box, 4-7-8, coherent, energizing, belly) proven to lower stress within minutes.
• Daily AI Insight (Pemsi Pro): a one-line, evidence-based suggestion personalised to today.
PRIVACY FIRST
Your cycle data lives on your device by default. Optional end-to-end encrypted cloud sync — even we can't read your logs. No ads, no third-party analytics, no selling of any kind. Ever.
LINKS
Privacy Policy: https://pemsi.serenity.games/privacy
Support: https://pemsi.serenity.games/support
Terms of Service: https://pemsi.serenity.games/terms
Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The app reaches the server again.
• Fixed the main problem: sign-in, syncing and saving could fail to connect.
• Removed a freeze on the first launch.
• Several interface fixes.
The developer, Andrii Kedrov, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- User Content
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Andrii Kedrov
- Size
- 16.9 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 19 more
- English, Arabic, Dutch, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Pemsi Pro · 1 Year $34.99
- Pemsi Pro · 1 Month $2.99
- Pemsi Pro · 1 Week $0.99
- Copyright
- © 2026 Serenity Games