PRIVACY POLICY

bolt and nut Privacy Policy

This Privacy Policy applies to [bolt and nut] provided by [xonnet studio] (hereinafter referred to as "the Developer").

This Privacy Policy explains how bolt and nut handles data.

Key Points:

• Fastener dimension lookup runs locally on your device
• App settings are saved locally with Android SharedPreferences
• bolt and nut does not operate a user account system or analytics server
• The app uses Google Mobile Ads, which may collect and share data for advertising, analytics, and fraud prevention

Please read this policy to understand the difference between data handled by the app and data handled by advertising services.

bolt and nut itself does not collect personal information such as:

• Name, email address, phone number, or account profile
• Contact lists, calendar data, camera, or microphone data
• Precise GPS location
• Lookup history transmitted to our server

Local data stored by the app:

• Theme mode
• Detail level
• Large text setting
• Heavy Hex setting
• Native ad display count and last shown time

These settings are saved on your device with SharedPreferences and are removed according to Android app data behavior, such as when you clear app data or uninstall the app.

Fastener dimension data:

• ASME fastener data files are bundled with the app
• Nut and bolt lookups are processed on device
• Selected size, standard, and detail level are not sent to our server

Saved images:

• When you use Save, the app writes the generated spec image to your device
• Saved image file names may include a timestamp to avoid duplicate names
• On Android 10 and later, this uses MediaStore without storage permission
• On Android 9 and earlier, Android may require WRITE_EXTERNAL_STORAGE permission

This app uses Google Mobile Ads to display advertisements. According to Google's Mobile Ads SDK disclosure, the SDK may automatically collect and share data for advertising, analytics, and fraud prevention, including:

• IP address, which may be used to estimate general location
• User product interactions, such as ad impressions, taps, and video views
• Diagnostic information, such as SDK performance and app launch information
• Device and account identifiers, including Android Advertising ID and App Set ID where available

This data is handled by Google and its advertising partners according to their own policies. Data collected by Google Mobile Ads is encrypted in transit.

This application declares the following permissions:

• INTERNET: Used to load advertisements
• AD_ID: Used by Google Mobile Ads for advertising and measurement
• VIBRATE: Used only for short tactile feedback when changing selections or settings
• WRITE_EXTERNAL_STORAGE: Used only on Android 9 and earlier when saving images

The app does not request camera, microphone, precise location, contacts, calendar, phone, or account permissions. The app may open Play Store pages or other HTTPS links in your default browser using Android's standard intent system.

Because bolt and nut does not operate user accounts or a remote user database, there is no app account profile to access, export, or delete.

You can control local app data by:

• Changing settings inside the app
• Clearing app data in Android system settings
• Uninstalling the app

You can control advertising identifiers through Android settings. Depending on your Android version, you may be able to reset or delete your Advertising ID, or turn off ad personalization.

bolt and nut is designed to keep app lookup behavior local:

• Fastener data files are read from the app package
• App preferences are stored in Android SharedPreferences
• Saved images are written to device storage only when you use Save
• Advertising SDK network traffic is handled by Google Mobile Ads and is encrypted in transit according to Google's SDK disclosure

This summary is intended to help users understand the same categories commonly used in Google Play Data Safety disclosures.

Collection

• App itself: Stores settings locally on the device only
• Google Mobile Ads SDK: May collect IP address, user product interactions, diagnostics, and device/account identifiers

Sharing

• App itself: Does not send lookup data or settings to our server
• Google Mobile Ads SDK: May share data for advertising, analytics, and fraud prevention

Purpose

• Local settings: Restore your app preferences
• Advertising data: Deliver ads, measure ad performance, and prevent fraud

User Control

• You can clear app data or uninstall the app to remove local settings
• You can reset or delete your Advertising ID in Android settings where supported

Security practices

• Local app data follows Android device security behavior
• Google Mobile Ads data is encrypted in transit according to Google's SDK disclosure

The app may open external Google Play pages for related apps and uses Google Mobile Ads for advertising. The app also includes an in-app library notice screen for major third-party libraries and bundled font information.

Useful Google resources:

• Google Privacy Policy
• Google Ads Privacy
• Manage Google Ad Settings

Third-party services and websites are governed by their own privacy policies and terms.

bolt and nut is a technical reference app for fastener dimensions. The app itself does not ask users to create accounts or provide personal information.

Advertising services may process data as described in this policy. Parents or guardians can use Android device settings to manage the device's Advertising ID and ad personalization options where available.

When this Privacy Policy changes:

• Updated policy text may be provided through an app update
• Material changes may be noted in the app or store listing where appropriate

Your continued use of the app after an update means you are using the app under the updated policy.

If you have questions or concerns about this privacy policy or our practices, please contact us at:

Email: xonnetdev2@gmail.com

This Privacy Policy takes effect from the time of app installation and use.

Last Updated: June 2026