Apps by JINTAE IM
LunaCat- Cycle, Ovulation, TTC app icon

Health & Fitness

LunaCat- Cycle, Ovulation, TTC

JINTAE IM

Free download In-app purchases unconfirmed
Open on Apple

About this app

Never lose track of when your period's coming. LunaCat predicts your next period and ovulation day, ahead of time. ■ Two taps, and you're done Just tap once on the day your period starts. - No complicated input, just the start date - Your next cycle is calculated automatically from what you've logged - Fix a past entry anytime, right from the calendar ■ See everything on one calendar Days you had your period, your predicted period, predicted ovulation day, and fertile window are each shown with their own color and shape. - Switch between month and year view - Browse from 2025 through 2027 - Tap any date to see that day's log instantly ■ A home screen that adapts to your goal Your home screen changes depending on whether you're trying to conceive or just tracking your cycle. - Trying to conceive: your fertile window and predicted ovulation day take center stage - Tracking your cycle: your next period date front and center - Want to understand your body: articles matched to today's phase ■ Reminders, on your schedule - Upcoming period alert - Ovulation and fertile window alert - Birth control pill reminder (set your own time) - Daily logging reminder (set your own time) ■ Log how you're feeling - Symptoms, mood, vaginal discharge, digestion, physical activity - Sex and contraception - Your cat's expression changes with the mood you log ■ Cycle analysis - Average cycle length and period length - See at a glance whether your cycle is regular (ACOG's 24-38 day standard) - A month-by-month chart of your cycle ■ Things worth reading - Understanding the 4 phases of your cycle - Dealing with PMS - Choosing period products that fit you - Learning about birth control methods - Signs that mean it's time to see a doctor ■ Keep it to yourself - Lock the app with your fingerprint or face - Block screenshots and screen recording - Hide notification content (lock screen shows only "LunaCat") Your data stays on this device only - no sign-up required. LunaCat is not a medical device. Predictions are for reference only, and fertile-window predictions are not a form of contraception. Please consult a healthcare professional for medical decisions.

Latest release

What’s New

Version 1.2.0 Sep 9, 2026

• Share your fertile window with your partner as a card — you choose what goes in, and the card is built on your phone • New on Home: “Your logs around now” — what you noted at this point in past cycles • Luna’s illustration now changes with your cycle phase and how you feel • A tidier Home, plus a line showing what you logged today • Added German, French, Italian, Portuguese and Dutch

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
0 ratings
0 Sep 11, 2026 · 0 ratings Sep 11, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current Free
Historical low Free
Paid → free 0×
Price history
Current Free
Free Sep 11, 2026 · Free Sep 11, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Sep 11, 2026 · 10:03 PM Free

Screenshots

LunaCat- Cycle, Ovulation, TTC iPhone screenshotLunaCat- Cycle, Ovulation, TTC iPhone screenshotLunaCat- Cycle, Ovulation, TTC iPhone screenshotLunaCat- Cycle, Ovulation, TTC iPhone screenshotLunaCat- Cycle, Ovulation, TTC iPhone screenshot