Knowing: Ovulation & Period
LH Test Scanner, Cycle Tracker
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Point your camera at an ovulation test and Knowing reads the lines for you — then shows what they mean for the six days that matter.
Knowing turns what your body is already telling you into one clear answer a day.
SCAN YOUR OVULATION TEST
Point the camera at an LH strip and Knowing measures the test and control lines for you — no more squinting at two pink smudges in bad bathroom light. It plots your surge across the cycle so you can see it coming, not just notice it after the fact. The photo is deleted once the measurement is taken.
THE SIX DAYS THAT MATTER
The fertile window is six days long and ends on the day you ovulate. Knowing shows you where you are in it — today, in plain language, above the fold — and builds its estimate from what you actually log: your periods, your tests, your temperature, your cervical mucus.
WHATEVER YOU ARE HERE FOR
Four modes, and the whole app changes to match: trying to conceive, pregnant, just tracking, or avoiding pregnancy. Pregnancy mode follows your weeks, your due date and your blood pressure readings.
LOG WHAT MATTERS, SKIP WHAT DOESN'T
Flow, cramps, mood, mucus, temperature, medication, blood pressure, notes. One tap each. Nothing is required.
EVERY CLAIM HAS A SOURCE
Where Knowing tells you something about your body, it tells you where that came from and how strong the evidence is. Where the science is weak, it says so — including the moon, which is shown because it is lovely, and clearly marked as decoration that predicts nothing.
ASK, PRIVATELY
Ask questions about your own cycle and get answers from Apple Intelligence running entirely on your iPhone. Nothing is sent anywhere.
BUILT TO BE PRIVATE
There is no account and no sign-up, because there is no server. Your cycle data lives on your iPhone. Optional iCloud sync keeps it in your own private iCloud, and you can lock the app behind Face ID and export an encrypted backup whenever you like.
Knowing is not a contraceptive and does not diagnose anything. It is a record of your body and a clear reading of it.
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Knowing Premium unlocks the full app. Yearly, monthly, or a one-time lifetime purchase.
Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours of the end of the current period. You can manage or cancel your subscription in your Apple ID settings at any time.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://snrgwa-bot.github.io/knowing-app/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Two new modes, for the times when a cycle is not a clock.
MY PERIODS ARE NEW
If you have not started yet, or started in the last year or two, Knowing now says what is actually true: for the first year or two cycles are often uneven, anywhere from 21 to 45 days apart, and that is expected rather than a problem. No fertile window and no conception odds — just your cycle, and the few signs that are genuinely worth telling a doctor about.
MENOPAUSE
Knowing now asks rather than assuming, and stops predicting dates from cycles that are changing.
ALSO IN THIS VERSION
• If you are waiting for your first period, the free trial no longer runs out before you have had the chance to use the app.
• Conception guidance is no longer shown to anyone under 16.
• A new app icon to choose from in Settings.
The developer, DUMITRU BUMBU, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- DUMITRU BUMBU
- Size
- 16.2 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 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
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Lifetime $149.99
- Premium Monthly $9.99
- Premium Yearly $59.99
- Copyright
- © 2026 Essential Dev Team
