Terms of Service — Fasting Well

Last updated: May 31, 2026

These Terms of Service (“Terms”) are a legal agreement between you and Generalize LLC (“we,” “us,” “our”) covering your use of the Fasting Well mobile app and the website at fastingwell.app (together, “the app”).

It is written in plain English. If anything here is unclear, email us at hello@fastingwell.app and we’ll do our best to explain.

Acceptance of these terms

By downloading, installing, or using Fasting Well, you agree to these Terms. If you don’t agree, please don’t use the app.

If you’re using the app on behalf of someone else, you confirm you have the authority to accept these Terms for them.

License to use the app

We grant you a personal, limited, non-exclusive, non-transferable, revocable license to install and use Fasting Well on devices you own or control, for your own personal, non-commercial use.

You agree not to:

• Copy, modify, reverse-engineer, decompile, or attempt to extract the source code of the app, except where that restriction is prohibited by law.
• Resell, sublicense, rent, or redistribute the app.
• Use the app in any way that breaks the law or these Terms.

We keep all rights we don’t expressly grant you here.

Health & fasting disclaimer — please read this

Fasting Well is not a medical device and does not provide medical advice. The app, its timers, its stage descriptions, and its Learn articles are for general informational and educational purposes only. They are not a substitute for professional medical advice, diagnosis, or treatment.

• Talk to a doctor before you start fasting, especially before attempting extended fasts, and especially if you are pregnant or breastfeeding, are under 18, have diabetes or any condition affecting blood sugar, have a history of disordered eating, take medication, or have any other health condition.
• Never disregard professional medical advice or delay seeking it because of something you read or saw in this app.
• Stage timings (Anabolic, Catabolic, Fat Burning, Ketosis, Deep Ketosis, Extended) and descriptions of processes like ketosis or autophagy are general approximations. Your body is individual; what actually happens to you may differ.
• Stop fasting and seek medical attention if you feel unwell, faint, or experience any concerning symptoms.

You use the app and make fasting decisions at your own risk.

Subscriptions, purchases, and billing

The core of Fasting Well is free. An optional Pro tier unlocks custom protocols, weight tracking, shareable fast cards, advanced statistics including the 12-week calendar heatmap, and all accent palettes. Pro is offered in three forms:

• Monthly — an auto-renewing subscription billed every month.
• Annual — an auto-renewing subscription billed once a year.
• Lifetime — a single one-time purchase, not a subscription.

Auto-renewing subscriptions

The Monthly and Annual plans are auto-renewing subscriptions. Here’s how they work:

• Payment is charged to your Apple App Store or Google Play Store account at confirmation of purchase.
• The subscription automatically renews at the end of each billing period (monthly or yearly) at the then-current price, unless you cancel.
• You are charged for renewal within 24 hours before the current period ends.
• You can cancel or manage your subscription any time in your store account settings: on iOS via Settings → [your name] → Subscriptions, and on Android via the Google Play Store → Subscriptions. To avoid being billed for the next period, cancel at least 24 hours before the current period ends.
• Cancelling stops future renewals; it does not retroactively refund the current period. Your Pro access continues until the end of the period you’ve already paid for.

One-time Lifetime purchase

The Lifetime option is a single one-time payment through the App Store or Play Store that unlocks Pro for as long as the app is reasonably maintained on the platform you bought it on. It does not auto-renew and is not billed again.

Payments, refunds, and the App Store EULA

• All purchases are processed by Apple or Google. We never see or store your payment information.
• Refunds are handled by the store you purchased from, under that store’s policies — not by us directly. For Apple purchases, request refunds through Apple; for Google purchases, through Google Play.
• For apps downloaded from the Apple App Store, Apple’s standard Licensed Application End User License Agreement (EULA) also applies, and to the extent it conflicts with these Terms for that download, Apple’s EULA governs. You can read it at apple.com/legal/internet-services/itunes/dev/stdeula.
• Prices may change over time. If the price of a subscription changes, the store will notify you and ask for your consent before charging the new amount, in line with the store’s rules.

Your content and data

You own the fasting, weight, and journal data you create. As described in our Privacy Policy, that data lives on your device — we don’t operate a server that stores it. You’re responsible for keeping your own backups; we can’t recover data from a lost or reset device.

Intellectual property

The Fasting Well app, name, logo, written content, designs, and software are owned by Generalize LLC and protected by intellectual-property laws. These Terms don’t transfer any of those rights to you beyond the limited license above.

The app is provided “as is”

To the fullest extent allowed by law, Fasting Well is provided “as is” and “as available,” without warranties of any kind, whether express or implied — including any implied warranties of merchantability, fitness for a particular purpose, accuracy, or non-infringement.

We don’t warrant that the app will be uninterrupted, error-free, or that its timers, calculations, or content will be accurate or suitable for your circumstances.

Limitation of liability

To the fullest extent allowed by law, Generalize LLC and its team will not be liable for any indirect, incidental, special, consequential, or punitive damages, or for any loss of data, profits, or health outcomes, arising out of or relating to your use of (or inability to use) the app.

Where liability cannot be excluded, our total liability to you for any claim relating to the app is limited to the greater of (a) the amount you paid us for the app in the 12 months before the claim, or (b) USD $50.

Some jurisdictions don’t allow certain limitations, so some of the above may not apply to you. Nothing in these Terms limits liability that cannot be limited by law.

Changes to these terms

We may update these Terms from time to time. When we do, we’ll update the “Last updated” date above. If a change is material, we’ll note it in the app’s “What’s New” release notes for the next version. Continuing to use the app after a change means you accept the updated Terms.

Governing law

These Terms are governed by the laws of the State of Delaware, USA, without regard to its conflict-of-laws rules. Any dispute that isn’t resolved informally will be subject to the courts located in Delaware, except where applicable law gives you the right to bring a claim elsewhere.

Contact

• Email: hello@fastingwell.app
• Operator: Generalize LLC, USA