Naia: Ovulation Tracker
Fertility & cycle tracker
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Naia is a fertility and ovulation tracker for people actively trying to conceive. It narrows your fertile window to your two best days, and then does the thing no calendar can: it tells you afterwards whether ovulation actually happened.
TIME IT RIGHT THIS MONTH
Your fertile window is about six days long, and it moves. Naia reads your own signals, LH tests, waking temperature and cervical mucus, and puts a probability on today instead of painting a ten-day band. When your window opens you see your two best days, not a blob.
THEN KNOW IT ACTUALLY HAPPENED
An LH test says your body is getting ready. It never proves an egg was released. Naia watches for the temperature shift that only follows ovulation, or a positive PdG test, and then tells you plainly: ovulation confirmed, and the day it happened. If a cycle shows no confirming sign, Naia says that too, and after repeated cycles without signs it suggests a conversation with your doctor. It will never tell you that you did not ovulate; it reports what was and was not observed.
YOUR TEMPERATURE IS THE PROOF
A resting temperature that rises and stays up for three days is the classic confirmation signal. Naia charts it in real degrees on a real scale, alongside your LH results, so you can see the evidence, not just a verdict. Wrist temperature from Apple Watch imports automatically through Apple Health.
MOST APPS GUESS. NAIA MEASURES.
Cycle history alone lands the right day about four times in ten, because the first half of your cycle can vary by weeks. Every cycle you log teaches Naia your own pattern: your typical ovulation day, your measured luteal phase, how your timing moves. The predictions get sharper because they are built from confirmations, not from a day-14 rule.
LOG IT ALL IN SECONDS
One sheet for the whole day: period, intercourse, LH result, temperature, mucus. Ten seconds a day is enough. Manual LH entry works with any brand of test strip.
SHOW YOUR DOCTOR REAL DATA
One report collects your record: cycles recorded, which were confirmed, your measured luteal phase, and how complete the data is. It renders as a PDF on your phone and shares from there. It is written in the language a clinician expects.
PRIVATE BY ARCHITECTURE
Your cycle data stays on your device. No ads, no selling of personal data, and no health information is ever sent to advertising or analytics networks. Deleting the app deletes the data.
SUBSCRIPTION
Naia Pro unlocks every feature: your narrowed fertile window, ovulation confirmation, and the full cycle chart. Two plans: Naia Pro Yearly at $49.99/year with a 7-day free trial, and Naia Pro Monthly at $12.99/month with no trial. Prices may vary by region and are shown in the app before any charge. Payment is charged to your Apple Account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period, and can be managed or cancelled in your Apple Account settings.
Terms: https://troiva.com/terms
Privacy: https://troiva.com/privacy
Naia is not a medical device, does not diagnose or treat any condition, and does not provide contraception. Do not use it to prevent pregnancy.
Ratings & Reviews
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• A new Today: your cycle ring shows where you are at a glance, with today's temperature and what it means.
• Home and Lock Screen widgets.
• Your first fertile window from day one, sharper with every cycle you log.
• Apple Watch wrist temperature syncs automatically from Apple Health.
• Quick one-tap mucus and mood check-ins.
• Smoother onboarding, plus fixes.
The developer, Troiva LLC, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Purchases
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Troiva LLC
- Size
- 72 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 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
- Naia Pro Monthly $12.99
- Naia Pro Yearly $49.99
- Copyright
- © 2026 Troiva