Information Collection and Use
You don't need to create an account, sign in, or provide your name, email address, or phone number to use Interval Timer: HIIT & Tabata ("Interval Timer").

Everything you create or set up inside the app is stored only in local storage on your device. This includes:

• your work, rest, and cooldown durations, and the number of rounds, sets, and cycles;

• the workouts, presets, and exercise names you create or edit;

• your completed workout history, streaks, and statistics;

• your selected theme, sounds, voice cues, vibration, and volume settings;

• your notification and screen preferences.

We do not upload, transmit, or store any of this on our servers. We have no account system and no cloud backup. This data never leaves your device unless you choose to share or export it yourself. It is permanently lost if you uninstall the app or clear its data.

The app does use third-party services that may collect information used to identify you. Links to the privacy policies of the third-party service providers used by the app:

• Google Play Services: https://www.google.com/policies/privacy/

• Google AdMob: https://support.google.com/admob/answer/6128543?hl=en

• Google Analytics for Firebase: https://firebase.google.com/policies/analytics

• Firebase Crashlytics: https://firebase.google.com/support/privacy/

• Google Play Billing: https://policies.google.com/privacy

Health and Fitness Information
Interval Timer is a workout timer. It is not a medical device and does not provide medical advice.

Interval Timer does not collect or read health or body data. It does not access your heart rate, steps, weight, calories, or sleep, and it does not connect to Health Connect, Google Fit, or any wearable device. It does not use your device's motion sensors. Your workout history contains only timer information, such as when a workout was done, how long it lasted, and how many rounds you completed. This history stays on your device.

Permissions Used by Interval Timer
Interval Timer asks you for only one permission: notifications.

Notifications (POST_NOTIFICATIONS): On Android 13 and later, Interval Timer asks for your permission before sending notifications. The app uses notifications for three things:

• to show the running timer while the app is in the background or your screen is off;

• to alert you when an interval or workout ends;

• to let you pause or stop the timer from the notification.

If you deny this permission, the app still works, but you will not see the timer or receive these alerts outside the app. You can turn notifications on or off at any time in your device settings under Apps > Interval Timer > Notifications.

Interval Timer does not request access to your contacts, photos, files, camera, microphone, location, or any other personal content on your device.

Advertising
The free version of Interval Timer displays advertisements. These include banner ads and interstitial ads shown before or after a workout.

Ads are never shown during a running workout, so an ad will never interrupt your intervals or cause you to miss a cue.

Our advertising partners may collect and use the following to serve and measure advertising, including personalized advertising:

• your Advertising ID (a resettable identifier provided by Google Play Services);

• approximate location derived from your IP address;

• device type and operating system version;

• information about your interaction with ads.

You can control this at any time:

• To reset or delete your Advertising ID, go to Settings > Google > Ads on your Android device.

• To opt out of personalized advertising, enable "Opt out of Ads Personalization" in the same menu.

Where required by law, we will ask for your consent before serving personalized ads. You may change your choice at any time from within the app.

In-App Purchases
Interval Timer offers an optional one-time "Lifetime" purchase. It permanently removes advertisements and unlocks premium features. It is not a subscription and will not be charged again.

All purchases are processed by Google Play Billing. We never receive, collect, or store your credit card number, bank details, or billing address. We receive only a purchase token and transaction status from Google. We use these to verify and restore your purchase, for example after you reinstall the app or switch to a new device signed in to the same Google account. Please refer to Google's Privacy Policy for information on how Google handles payment data.

Log Data
If an error occurs in the app, we collect data and information on your phone through third-party products. This is called Log Data. Log Data may include your device Internet Protocol ("IP") address, device name, operating system version, the app's configuration at the time, the time and date of your use of the app, and other statistics.

Analytics
We use Google Analytics for Firebase and Firebase Crashlytics to understand how the app is used and to diagnose crashes. We collect aggregated, non-identifying information such as:

• which features and screens are opened;

• how many workouts are started, completed, or stopped early;

• which built-in workout types are used (for example, HIIT, Tabata, or custom);

• app version and device model;

• crash stack traces.

We do not send the workout or exercise names you type, and we do not build a profile of your fitness habits. We use this information solely to fix problems and improve the app.

Cookies
Cookies are files with a small amount of data that are commonly used as anonymous unique identifiers. Websites you visit send them to your browser, and they are stored on your device's internal memory.

Interval Timer does not use cookies explicitly. However, the app may use third-party code and libraries that use cookies to collect information and improve their services. You can accept or refuse these cookies and know when a cookie is being sent to your device. If you refuse cookies, you may not be able to use some parts of the app.

Service Providers
We may employ third-party companies and individuals for the following reasons:

• to facilitate our Service;

• to provide the Service on our behalf;

• to perform Service-related services; or

• to assist us in analyzing how our Service is used.

These third parties have access to your Personal Information so they can perform the tasks assigned to them on our behalf. They are obligated not to disclose or use the information for any other purpose.

Data Retention
Your workouts, presets, settings, and workout history remain on your device until you delete them, clear the app's data, or uninstall the app. Google retains crash reports and analytics data for the periods set out in the Firebase and AdMob policies linked above.

International Data Transfers
We are based in Vietnam. The third-party providers listed above process data on servers located in the United States and other countries. When personal information is transferred outside your country of residence, it is protected by the safeguards those providers use, including the European Commission's Standard Contractual Clauses where applicable.

Data Deletion Rights & Instructions
Most of your usage data, such as your workouts, presets, settings, and workout history, is stored locally on your device.

Local Data Deletion: You can delete all locally stored data at any time in three ways:

• use "Reset all data" in the app's settings (this also removes your saved workouts and history and cannot be undone);

• clear the app's cache and data in your device settings;

• uninstall Interval Timer.

Deleting local data does not cancel your Lifetime purchase. You can restore it from the app while signed in to the same Google account.

Data Deletion Requests: You may want to delete data collected by integrated third-party services, such as analytics or ad networks, or you may have concerns about it. In either case, email us at admin@hpgmobile.com with the subject "Data Deletion Request". We will process your request within 30 days.

Your Rights
Depending on where you live, you may have the right to:

• access, correct, delete, or restrict the processing of your personal information;

• object to processing;

• withdraw consent for personalized advertising.

Residents of the European Economic Area and the United Kingdom have these rights under the GDPR. Residents of California have comparable rights under the CCPA/CPRA, including the right to opt out of the sale or sharing of personal information.

We do not sell your personal information for money. To exercise any of these rights, contact us at admin@hpgmobile.com. 

Security
We value your trust in providing us with your Personal Information, and we use commercially acceptable means to protect it. However, no method of transmission over the internet or of electronic storage is 100% secure and reliable, and we cannot guarantee absolute security.

Links to Other Sites
Interval Timer may contain links to other sites. If you click a third-party link, you will be directed to that site. These external sites are not operated by us, so we strongly advise you to review their privacy policies. We have no control over and assume no responsibility for the content, privacy policies, or practices of any third-party sites or services.

Children's Privacy
Interval Timer is not directed to anyone under 13. We do not knowingly collect personally identifiable information from children under 13. If we discover that a child under 13 has provided us with personal information, we will delete it immediately. If you are a parent or guardian and believe your child has provided us with personal information, please get in touch with us so we can take the necessary actions.

Changes to This Privacy Policy
We may update this Privacy Policy from time to time. Please review this page periodically for changes. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date above.

Contact Us
If you have any questions or suggestions about this Privacy Policy, contact us at admin@hpgmobile.com