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Privacy Policy — Vietnam VND

Last updated: November 2, 2026

1. Who we are

The Vietnam VND mobile app (the “App”) is published by:

The Publisher is the controller, within the meaning of the GDPR, of any personal data the App might process. As explained below, the only data it receives is technical crash and diagnostic data, which is not linked to your identity.

2. How the App works, briefly

Vietnam VND converts amounts between currencies on your device. To do so, it downloads exchange rates from an online service, at most once per update of that service's data (roughly once a day), and keeps them on your device so that it can keep working offline. The App has no account, no sign-in and no server operated by the Publisher.

The App can also keep track of shared expenses during a trip and read prices on a menu with your camera. Expense tracking is free up to 10 expenses; a one-time in-app purchase sold by Apple removes this limit.

3. Data stored on your device

Apart from the crash and diagnostic data described in section 4, the Publisher does not collect, receive or store any data through the App. The App stores the following on your device only:

This data never leaves your device through the App, and the Publisher has no access to it, unless you choose to share a trip summary yourself. It may be included in your device backups (for example iCloud), which are managed by you and by the provider of your device.

When you scan a menu, the camera image is analysed on your device to read the prices. It is neither saved nor sent anywhere.

4. Service providers and international transfers

To download exchange rates, the App sends a request directly from your device to ExchangeRate-API. Like any internet request, it reveals your IP address and standard technical connection data (such as the type of device and system) to that provider. The request contains no identifier, no account information and none of your conversions.

ExchangeRate-API processes this technical data under its own responsibility and may do so outside your country, including outside the European Economic Area and Switzerland. Its terms and privacy information are available on its website. The Publisher receives no personal data from this request and transfers none itself.

If you prefer that no such request is made, use the App without an internet connection: it then shows the last saved rates.

Crash reporting (Sentry)

To detect and fix bugs, the App sends crash and error reports to Sentry (Functional Software, Inc.), our error-tracking provider. These reports contain technical data only: the error and where it occurred in the code, the device model, the iOS and App versions, and a random identifier generated by the App. They contain no name, no email address, none of your conversions and none of your trips. Like any internet request, sending a report reveals your IP address to Sentry. Sentry is configured not to collect personal data (“sendDefaultPii” disabled) and stores the reports in the European Union (Germany). This processing is based on our legitimate interest in keeping the App working (Art. 6(1)(f) GDPR).

In-app purchase (Apple)

The unlimited expenses option is sold by Apple through the App Store, under Apple's own terms and privacy policy. The App checks with Apple, on your device, that the purchase is valid. The Publisher never receives your payment details or your Apple ID.

5. Retention and deletion

Data stored on your device remains there until you delete it. Deleting the App removes all the data it stored on your device; your purchase stays attached to your Apple account and can be restored. Crash and diagnostic reports are kept by Sentry under its retention policy, generally 90 days, and then deleted. The Publisher holds no other data about you.

6. Advertising and tracking

The App shows no advertising and contains no advertising identifier and no analytics tool. The only third-party software development kit it contains is Sentry, used solely for crash reporting as described in section 4. The App does not track you across apps or websites and therefore does not display a tracking permission request (App Tracking Transparency).

7. Your rights

The Publisher holds no data that identifies you: crash reports are not linked to your identity, so there is usually nothing to access, correct or delete on its side. You nevertheless keep all the rights granted by the applicable law — in particular, under the GDPR and the Swiss Federal Act on Data Protection (FADP), the rights of access, rectification, erasure, restriction, objection and data portability. To exercise them, or for any question, write to contact@solis-apps.com.

You may also lodge a complaint with a data protection authority: in France, the CNIL (www.cnil.fr); in Switzerland, the Federal Data Protection and Information Commissioner (www.edoeb.admin.ch); or the authority of your country of residence.

Users located in Switzerland

If you live in Switzerland, this policy applies together with the FADP. The controller is the Publisher identified in section 1, reachable at contact@solis-apps.com. No representative in Switzerland has been appointed, as the conditions of Article 14 FADP are not met. The recipients described in section 4 may be located outside Switzerland.

8. Children and security

The App is not directed at children in particular and collects no personal data identifying anyone, including children.

Data stored on your device is protected by your device's own security features (passcode, encryption). Exchange rates are downloaded over an encrypted HTTPS connection.

9. Changes and contact

We may update this policy, for example if the App changes. The date of the current version is shown at the top of this page, and the new version is published at this address.

Questions: contact@solis-apps.com.