Privacy Policy

Decibel Studios built the FastBuddy: Fasting Tracker app (package com.decibelstudios.fastbuddy). This SERVICE is provided by Decibel Studios at no cost, with optional paid features, and is intended for use as is.

This page explains what information FastBuddy uses, why, and what choices you have. If you choose to use FastBuddy, you agree to the collection and use of information described in this policy. We will not use or share your information with anyone except as described here.

What FastBuddy Does

FastBuddy is an intermittent fasting tracker. It times your fasts, shows which body zone you are probably in, keeps a history with stats, streaks and badges, and lets you log water and weight. It can remind you to start a fast, alert you when you reach your goal, and show a timer in your notifications and on a home-screen widget.

FastBuddy has no accounts and no sign-in. We do not run a server that receives your fasts, weight, water or notes.

Your Fasting and Health Information

• The information you enter (fast start and end times, fasting plan, how you felt, notes, weigh-ins, height, goal weight and water intake) is stored only on your device.
• It is never sent to Decibel Studios, never sold, and never used for advertising.
• It is not shared with Google Fit, Health Connect or any other health service.
• FastBuddy shows general information about fasting. It is not medical advice; talk to a doctor before fasting if you are pregnant or breastfeeding, under 18, have diabetes or another condition, take medication, or have a history of eating disorders.

Device Permissions

• Notifications: to show the live fasting timer and to tell you when you reach halfway, a new body zone or your goal, and for the reminders you turn on. You can turn these off in Settings or in your phone's system settings.
• Alarms & reminders (exact alarms, optional): so goal, zone and reminder notifications arrive on time instead of a few minutes late. FastBuddy only asks for it if you choose to allow it in Settings.
• Run at startup (boot completed): to set your reminders again after your phone restarts or the time zone changes. Nothing is sent anywhere.
• Vibration: for tap feedback, which you can change or turn off in Settings.
• Battery optimization exemption (optional): requested only if you choose it, so reminders are not stopped in the background.
• Internet: for ads, purchases, crash reporting and analytics only. Your fasting data does not need the internet.
• Advertising ID (AD_ID): used by Google Mobile Ads (AdMob) to serve advertisements to users without Pro. See the advertising section below.

Home-Screen Widget

If you add the FastBuddy widget, it shows your current fasting time, goal, plan and today's water on your home screen. Anyone who can see your home screen can see this information. The widget reads the data stored on your device and sends nothing anywhere.

Third-Party Services

The app uses the following third-party services, which may collect information as described in their own policies:

• Google Play Services (including Google Play Billing, in-app updates, in-app reviews and Play Integrity)
• AdMob and the AdMob third-party ad partners list
• Firebase Analytics
• Firebase Crashlytics

Advertising and Consent (AdMob & Google UMP)

Users without Pro see advertisements served by Google AdMob. Pro users (monthly or annual) do not see ads. Your fasting, weight and water information is never used to choose ads.

To serve ads, AdMob and its partners may process information including your advertising ID, IP address, approximate location derived from IP, device identifiers, app activity, and basic device characteristics.

If you are located in the European Economic Area, the United Kingdom, Switzerland, or a US state with applicable privacy law, the app shows a consent form managed by Google's User Messaging Platform (UMP) before ads load.

• If you consent, AdMob may serve personalized ads. The legal basis for this processing is your consent.
• If you decline, ads still appear but are served in a non-personalized "limited ads" mode.
• If you are outside those regions, no consent form is shown and ads are served in the standard AdMob configuration.

You can change your choice at any time in Settings → Help & FAQ → EU Privacy Options (shown only in regions where the consent form applies).

In-App Purchases

FastBuddy offers optional Pro subscriptions (monthly and annual) through Google Play Billing. Payments are handled entirely by Google Play; we do not collect, store, or have access to your payment information.

Analytics and Crash Reports

We use Firebase Analytics to understand which features are used (for example which tab you opened), and Firebase Crashlytics to receive crash reports. These may include device model, operating system version, app version, an app-instance identifier and the time of the event. They never include your fasts, notes, weight, height or water intake.

Your Rights (GDPR and Similar Laws)

If you are in the European Economic Area, the United Kingdom or Switzerland, the GDPR (or the UK GDPR / Swiss data protection law) gives you rights over your personal data. Similar rights apply under some other laws, such as California's CCPA/CPRA.

• Data we hold: FastBuddy keeps your fasts, weight, water, notes and settings only on your device. Decibel Studios does not have a copy of them, so you control them directly: you can edit or delete any fast or weigh-in in the app, delete everything in Settings → Clear history, or uninstall the app.
• Ads and analytics data: this is processed by Google as described above. You can withdraw or change ad consent in EU Privacy Options, reset or delete your advertising ID in your phone's Google settings, and use Google's privacy controls.
• Your rights: you can ask us for access to, correction of, deletion of, or a copy of personal data we hold about you; ask us to restrict or stop processing; and withdraw consent at any time without affecting earlier processing. Email us at the address below and we will reply within 30 days.
• Legal bases: consent (personalized ads), and our legitimate interest in keeping the app working and fixing crashes (crash reports and basic analytics).
• Complaints: you have the right to lodge a complaint with your local data protection authority.
• International transfers: Google and Firebase may process data outside your country, including in the United States, under their own safeguards such as Standard Contractual Clauses.

Data Retention and Backups

Your fasting history, weight, water and settings stay on your device until you delete them or uninstall the app. If your phone's Android backup to your Google account is turned on, Android may include this data in your device backup so it can be restored on a new phone; that backup is stored by Google under your account and is not accessible to Decibel Studios. You can turn device backup off in your phone's settings. If you use Export settings or Export as CSV, the file is saved or shared where you choose and is under your control.

Security

We use commercially acceptable means to protect your information, including keeping it in the app's private storage that other apps cannot access and using encrypted connections (HTTPS) for the services above. No method of transmission over the internet or electronic storage is 100% secure, and we cannot guarantee absolute security.

Children's Privacy

FastBuddy is not directed to children under 13, and fasting is not recommended for anyone under 18 without a doctor's advice. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with information, please contact us and we will delete it.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Changes are posted on this page and take effect immediately after they are posted.

Contact Us

If you have any questions or requests about this Privacy Policy, contact us at: [email protected]

This privacy policy was last updated on October 26, 2026.