Privacy Policy

1. Overview

This Privacy Policy applies globally to Smart Tip Calculator (the "App"). The App runs primarily on-device. We do not upload your entered data (e.g., bills, scenarios, transactions) to our servers. The App integrates Google AdMob and shows only Non‑Personalized Ads (NPA).

• What NPA means: Ads are not targeted based on your interest profile or cross‑site/app activity. Delivery is based on content, context, or coarse location.

2. Data We Do Not Collect

We do not collect directly identifying information (such as name, email, phone number, payment information, contacts, precise location), and we do not upload your input data (e.g., bill details, tax/tip settings, scenarios, transactions, notes) from the App to our servers.

3. Camera and Bill Scanning (OCR)

The App offers an optional bill scanning feature that uses your device's camera to extract bill amounts and tax information using Optical Character Recognition (OCR).

• Camera Access: When you use the bill scanning feature, the App requests permission to access your device camera. You can grant or deny this permission at any time in your device Settings.
• Local Processing Only: All image processing and OCR recognition are performed entirely on your device using Apple's Vision Framework. We do not capture, store, upload, or transmit any images or camera data to our servers or any third parties.
• No Image Retention: Scanned images are processed in real-time and immediately discarded after extracting the numerical values (bill total and tax amount). No photos or image data are saved in the App or on your device.
• Recognition Accuracy: OCR accuracy may vary depending on image quality, lighting conditions, bill format, and text clarity. You should always verify the extracted amounts before proceeding with calculations.
• Optional Feature: The bill scanning feature is entirely optional. You can continue using the App's manual input method without granting camera permission.

4. On‑Device Processing and Sharing

Your App data is stored locally on your device (e.g., iOS UserDefaults). Content is only shared when you actively use the system share sheet (e.g., sharing an image/screenshot). In those cases, Apple's or the receiving third party's terms and privacy policies apply.

5. Advertising and Measurement (NPA Only)

We integrate the Google Mobile Ads (AdMob) SDK for banner ads. We technically attach 'npa=1' to all ad requests to ensure only non‑personalized ads are requested.

• We do not enable personalized targeting and do not use IDFA for cross‑app tracking; therefore, Apple's App Tracking Transparency (ATT) prompt is generally not shown.
• In certain regions (e.g., EEA/UK/CH), a one‑time consent dialog may be required by local law and Google policy via a certified CMP such as Google UMP, primarily to confirm necessary advertising purposes and legality. A "Manage Privacy Consent" entry is provided in Settings so you can review or update choices later.

6. Third‑Party Policies and Responsibility

When you open external links (e.g., App Store rating) or use third‑party services (e.g., ads, share targets), those third parties may collect or process information under their policies. Please review and comply with the respective terms and privacy policies of Apple, Google, and any chosen third‑party apps/websites.

7. Your Privacy Rights (Global Summary)

• EU/UK/Switzerland (GDPR/UK GDPR/Swiss FADP): Where applicable, you may have rights to access, rectify, erase, restrict processing, object, and data portability. If the consent dialog is shown, you can revisit it anytime via Settings > Privacy & Ads.
• US State Laws (CCPA/CPRA/CPA/UCPA/VCDPA, etc.): We do not "sell" or "share" personal information for cross‑context behavioral advertising. We only show NPA; generally, no "Do Not Sell/Share" link is required.
• Brazil (LGPD), Canada (PIPEDA), Japan (APPI), Korea (PIPA), Singapore (PDPA), China (PIPL), India (DPDP), etc.: We follow core principles such as minimization, transparency, purpose limitation, security safeguards, and retention limits. To exercise rights, contact us below as applicable.

8. Data Retention and Deletion

Your data remains on your device until you delete it in the App (e.g., Clear All Data) or uninstall the App. Clearing data removes locally stored scenarios and transaction history.

9. Children's Privacy

The App is for a general audience and is not directed to children. We do not use child‑directed personalized ads. If you believe we inadvertently collected a child's information, please contact us below and delete the data on the device.

10. Changes to This Policy

We may update this Policy and display the "Last updated" date in the App. Updates take effect upon publication. Continued use constitutes acceptance of the changes.

11. Contact Us

For privacy questions or to exercise your rights, email: ByteDanceDev@outlook.com. We will respond within applicable legal or reasonable timeframes.