Lintra

Stress patterns in your HRV

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Lintra names the repeating thing your body reacts to — not a wellness score. One sentence, with the count it rests on. Some weeks leave you flattened and you never find out which part did it. Lintra reads one number from Apple Watch — heart rate variability — and compares every reading against your own trailing 28-day baseline. Not a population average. Yours. When a reading sits well below where you normally are, Lintra marks it as a dip. Then it looks at your calendar and asks a plain question: does this keep happening around the same thing? THE ANSWER IS A SENTENCE, NOT A SCORE "Your HRV dropped after Weekly Planning Sync in 5 of the 6 weeks it happened." That is the whole product. A named, repeating candidate, with the count it rests on — so you can weigh it yourself instead of trusting a number you cannot audit. IT WAITS BEFORE IT SPEAKS Lintra will not guess. Your baseline comes from a rolling 28-day window, and it will not build one until that window holds readings from at least 10 separate days — so a couple of heavy days cannot quietly become your normal. It will not name a cause until it has watched the same pattern repeat across at least 3 weeks. Until then it tells you exactly what it is still short of. CALENDAR IS OPTIONAL Without calendar access, Lintra still shows your dips and your baseline. With it, Lintra can name what they line up with. Event titles never leave your iPhone. SOMEWHERE TO PUT IT DOWN A guided 4-2-6 breathing session with a Live Activity on the Lock Screen, for the minutes right after you read something you did not want to read. NOTHING LEAVES YOUR IPHONE No account. No sign-up. No server. Every reading, every event title, and every sentence Lintra writes stays on device — the writing is done by Apple's on-device model. There is nothing for us to look at, because we never receive it. REQUIREMENTS An Apple Watch recording heart rate variability to the Health app, and an iPhone running iOS 26. Lintra is not a medical device. It does not diagnose, treat, or prevent any condition, and it is not a substitute for advice from a qualified professional. SUBSCRIPTION Lintra Pro unlocks the full app, monthly or annual, after a 7-day free trial (US $5.99 per month or US $34.99 per year; your local price is shown in the app before you buy). Payment is charged to your Apple Account when the free trial ends — or at confirmation of purchase if no trial applies to your account. A subscription renews automatically unless it is turned off at least 24 hours before the end of the current period. Manage or cancel it in Settings › Apple Account › Subscriptions. Privacy Policy: https://ootssu.com/lintra/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Events

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• iPhone Duo: stand it up like a laptop for a recovery session — the breathing circle and what to do now on the upright half, time left, your latest HRV and End on the flat half • Bug fixes

Version 1.0.2

Subscriptions

The developer, JIYULMOM, 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 Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
JIYULMOM
Size
9.6 MB
Category
Health & Fitness
Compatibility
Requires iOS 26.0 or later.
  • iPhone
    Requires iOS 26.0 or later.
  • Mac
    Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 26.0 or later.
Languages
English and 15 more
  • English, Arabic, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish
Age Rating
9+
In-App Purchases
Yes
  • Lintra Pro Annual $34.99
  • Lintra Pro Monthly $5.99
  • Learn More
Copyright
© 2026 ootssu.com
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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