Track your fasting intervals

Privacy Policy

Last updated: September 21, 2026Fasty is an independent fasting tracker developed by Kai Oelfke. Fasty has no
accounts. Fasty does not operate a server that stores your fasting, weight, or
Apple Health data. Fasty does not show ads, sell personal data, or track you
across other companies' apps and websites.Your fasting and weight dataYour fasting and weight entries are stored on your device. When iCloud is
available, the Fasty app can sync them between your devices through your private
iCloud storage. This private iCloud data is not accessible to Fasty's developer.Optional Apple Health access is handled on your device. You can change Health
permissions at any time in Apple's Health or Settings apps.PurchasesFasty uses RevenueCat to provide and restore
in-app purchases and subscriptions.
RevenueCat receives an anonymous app identifier, App Store purchase and
entitlement information, and interactions with RevenueCat's paywall and customer
center. Fasty does not create an account for you or send RevenueCat a custom
account identifier. Apple processes App Store purchases; Fasty does not receive
your payment details.Feedback, support, and diagnosticsWhen you send feedback in the app, use the website contact form, or contact
support by email, the message and any reply address you provide are received as
feedback or a support communication. Product feedback is used to improve Fasty.
Support communications are used to respond to your request. In-app submissions
also include basic technical information such as the app version,
operating-system version, and device model. You may separately choose to include
an email address for a reply, recent diagnostics, or an anonymous
purchase-support identifier. The app shows what will be submitted before you
send it.Fasty also sends a small sample of technical reports when the app reaches an
unexpected state. These reports contain technical context, app and system
versions, the device model, and a random identifier for that app installation.
They do not include your health data. They are used only to diagnose problems
and improve reliability, not for advertising or cross-app tracking.In-app feedback, support submissions, and automatic diagnostic reports are
delivered using Google Forms and Google Sheets. Website contact-form submissions
are delivered using Carrd. Feedback and support submissions are kept while useful
for improving Fasty or providing support. Technical reports are kept while useful
for diagnosing reliability problems. This does not apply to fasting, weight, or
Apple Health data stored on your device or in your private iCloud database.Data deletionYou can delete fasting and weight entries in Fasty. Deleting the app removes its
local data from that device. You can separately delete data synced through iCloud
in Apple's iCloud settings.You can request deletion of feedback or support information that can be identified
as yours by emailing [email protected]. Technical reports
cannot be located from your email address because Fasty does not connect them to
an account or contact information. Apple and RevenueCat may retain purchase
records when needed to provide purchases, prevent fraud, or meet legal
obligations.Service providers and websiteFasty uses Apple services for iCloud, Health, and App Store purchases; RevenueCat
for purchase and entitlement management; Google Forms and Google Sheets for
in-app feedback, support, and diagnostic submissions; and Carrd for the website
and its contact form. These providers process data only for the services they
provide and under their own privacy terms.The Fasty website is hosted using Carrd and Cloudflare and loads fonts from
Google. These providers may process standard network information, such as an IP
address, needed to deliver and protect the website. Fasty does not use the
website for advertising tracking.ContactFor privacy questions or requests, email
[email protected].