MintSoft

NetFold Privacy Policy

Effective date: October 21, 2026

This policy explains what information NetFold ("the App") handles and why. MintSoft ("we", "us") develops and operates the App.

At a glance

No account. The App has no sign-up or sign-in and never asks for your name, email address or phone number.
No ads, no tracking. The App contains no advertising SDK, does not use advertising identifiers (IDFA/AAID) and does not track you across other companies' apps or websites.
No usage analytics. The App does not send usage statistics about what you do in it.
Anonymous crash diagnostics. If the released App crashes or hits an error, it sends an anonymous technical report to Sentry so we can fix the problem (see section 3). The report contains no name, account, user or device identifier and no IP address is stored.
Your work stays on your device. Saved experiments, settings and practice records are stored only on your device.
Purchases and crash reports only. The only data that leaves your device is what is needed to process and restore in-app purchases (section 2) and anonymous crash diagnostics (section 3).

1. Information stored only on your device

Saved experiments (solid, net, fold amount and selected face), Predict mode records, settings, theme and language choices, and the optional daily-reminder time.
The 7-day in-app trial start date. The trial needs no payment information.

We cannot see this information. Settings > Clear App Data deletes your experiments, records, settings and reminders; the trial start date and the last known Pro status are kept so that clearing data does not restart the trial, and everything is removed when you uninstall the App. Daily reminders are scheduled on your device and are not sent through any server.

2. Information processed for in-app purchases

Payments are made through the Apple App Store or Google Play under their own terms; we never receive your card number or billing address. To unlock and restore NetFold Pro, the App uses RevenueCat (RevenueCat, Inc.), which receives:

a random, anonymous app user ID created on your device (it is not linked to your name or any account);
purchase history: product identifier, purchase or receipt token, transaction dates, price and currency, and subscription status;
technical data needed to deliver the request, such as App version, operating system, storefront country, and the IP address of the connection.

This data is used only to provide the App's functionality: verifying purchases, unlocking Pro features and restoring them on reinstall. It is not used for advertising or tracking and is not sold. RevenueCat privacy policy: revenuecat.com/privacy.

3. Anonymous crash diagnostics

The released App uses Sentry (Functional Software, Inc., United States) to receive a technical report when the App crashes or an error occurs. A report contains:

the error type and message and the stack trace (which part of the App's code failed);
the App version and build, and technical context such as device model, operating system version and language setting.

Before a report is sent, the App removes any user or installation identifier. The App does not send your IP address, and the Sentry project is set not to store IP addresses. The App does not record sessions, performance traces or screenshots, and reports never include your saved experiments, worksheets or photos. Reports are used only to find and fix crashes and errors (app functionality and stability), are not used for advertising or tracking, are not linked to you, and are kept for up to 90 days. Sentry privacy policy: sentry.io/privacy.

4. Update check

When the App starts, it may check the public App Store or Google Play listing of NetFold to see whether a newer version is available. The request contains no personal information beyond what any network connection carries (your IP address), and we do not store it.

5. Sharing

We do not sell or share personal information. Data is passed only to the service providers named above (RevenueCat, Apple, Google for purchases; Sentry for crash diagnostics) to the extent needed for those purposes. Because these providers may process data in the United States, your information may be transferred outside your country. All network transfers are encrypted (HTTPS/TLS).

6. Retention and deletion

On-device data: kept until you clear it in Settings or uninstall the App (the trial start date and last known Pro status remain until uninstall).
Purchase records held by RevenueCat and the app stores: kept as long as needed to honor your purchase and meet legal and accounting obligations.
Crash and error reports held by Sentry: deleted automatically after up to 90 days. Because they carry no identifier, they cannot be traced back to you.

To ask us to delete the purchase data associated with your anonymous app user ID, email [email protected] with the purchase receipt or order number. Because the ID is anonymous, we need that receipt to find the record. We respond within 30 days.

7. Your rights

Depending on where you live (for example under the GDPR, UK GDPR, CCPA/CPRA or Korea's PIPA), you may have the right to access, correct, delete or receive a copy of your personal information, to object to or restrict its processing, and to complain to a supervisory authority. Contact us at the address below to exercise these rights.

8. Children

NetFold is a learning app intended for users aged 13 and older, including parents and teachers. It is not directed at children under 13 (14 in the Republic of Korea), and we do not knowingly collect personal information from them. The App has no account, no ads and no tracking. If you believe a child has provided personal information, contact us and we will delete it.

9. Changes

If this policy changes, we will post the new version on this page and update the effective date. Significant changes will also be announced in the App where possible.

10. Contact

MintSoft (Privacy Officer: MintSoft Privacy Team)
Email: [email protected]
Website: app.mint-soft.com