Krumo is licensed to you under Apple's standard terms. Using the app means you accept Apple's Licensed Application End User License Agreement. The points below add what is specific to Krumo.
Peak times, reminders and the calculators are estimates worked out from the feedings, temperatures and peaks you log. Starters vary and so do kitchens, so use your own judgement before you bake.
Krumo Pro is a one-time in-app purchase, sold and handled by Apple. It is not a subscription and never renews. It belongs to your Apple Account, and you can restore it from Settings in the app. Refunds are handled by Apple at reportaproblem.apple.com.
The peak prediction, the feeding log, the fitted curve and bake cards are free. The free tier also includes reminders on your first three feeds, three bakes and one visit to each calculator.
Your log stays on your device, as the privacy policy describes. Deleting the app deletes it, and there is no copy to restore.