Privacy Policy

Short version. Multi Currency Converter does not collect personal data, does not require an account, has no analytics, no advertising SDKs, no third-party trackers, and no usage telemetry. The App works offline once exchange rates are cached. The longer version below explains the few technical exceptions.

1. Who We Are

The Multi Currency Converter app (the "App") and the website at www.multicurrencyconverter.com (the "Website") are provided by Exystems, LLC, a limited liability company registered in the Commonwealth of Pennsylvania, United States. For privacy questions, contact support@multicurrencyconverter.com.

For users in the European Economic Area, United Kingdom, or Switzerland, Exystems, LLC is the data controller for any limited processing described in this policy.

2. What We Do Not Collect

• No personal information. We do not collect your name, email, phone number, address, date of birth, government identifiers, or any other personally identifiable information through the App.
• No accounts. The App has no sign-up, sign-in, or user accounts.
• No analytics or telemetry. The App contains no analytics SDKs (no Google Analytics, Firebase, Amplitude, Mixpanel, etc.), no crash-reporting SDKs, and no usage tracking.
• No advertising. The App contains no ads, no ad SDKs, and no advertising identifiers (IDFA on iOS, AAID on Android).
• No device fingerprinting. We do not collect device IDs, hardware identifiers, MAC addresses, or other fingerprinting signals.
• No location. The App does not request or use GPS or any location services. (See § 4 for a note on time-zone usage, which is unrelated.)
• No contacts, photos, or microphone access. The App does not request these permissions.

3. The Few Network Requests the App Makes

The App periodically fetches exchange-rate data so conversions reflect current values. These are the only servers the App contacts directly:

• Our rate proxy: api.multicurrencyconverter.com — operated by Exystems, LLC. Hosts cached exchange rates, refreshed approximately hourly from public providers. Requests contain no user data: just a standard HTTPS GET for the latest rates or a date range. Server access logs may incidentally record your IP address, request path, and timestamp for security and abuse-prevention purposes; these logs are retained for up to thirty (30) days and are never linked to individual identity, advertising profiles, or any external service.
• Fallback CDN: cdn.jsdelivr.net — when our proxy is unreachable, the App falls back to a public, free currency-rates CDN (the @fawazahmed0/currency-api project on jsDelivr). jsDelivr is a third-party CDN with its own privacy policy; like any HTTPS request, it sees your IP address. We do not control jsDelivr's logs.
• Platform stores (Apple App Store, Google Play) — when you purchase Pro or restore a purchase, the App talks to Apple's StoreKit or Google Play Billing. Those transactions are governed by Apple's Privacy Policy and Google's Privacy Policy. We never see, store, or process your payment details. We only receive a boolean entitlement signal: "this device has Pro" or "this device does not."

The App makes no other outbound requests. There are no analytics pings, no error-reporting beacons, no advertising calls.

4. What Stays on Your Device

• Settings and preferences (theme, layout, displayed currencies, language, button styles, etc.) — stored in the device's local preferences storage (SharedPreferences on Android, NSUserDefaults on iOS).
• Cached exchange rates — stored locally and used so the App works offline and to avoid unnecessary network traffic.
• Chart history cache — historical rate data the App fetches when you open a chart, stored locally so subsequent views are instant.
• Error log (optional) — when something goes wrong, the App can record a brief technical entry on your device. This log never leaves your device unless you explicitly choose to attach it to a feedback email via Settings → Send feedback. You can view and clear it at any time from the in-app debug screen on debug builds.
• Time zone (optional, opt-in feature) — the App's "Travel mode" feature reads your device's IANA time zone (e.g. Europe/Berlin) to suggest a local currency when you arrive in a new region. This uses the operating system's time-zone API only — never GPS, never network. The time zone is processed on-device and not transmitted anywhere. You can disable this feature in Settings.

5. In-App Purchases

The App offers a one-time optional "Pro" upgrade. Payment is processed entirely by Apple App Store or Google Play. We do not receive your name, email, billing address, card number, or any other payment information from these transactions. We only receive an entitlement flag indicating the purchase was successful, which is stored locally on your device. Restoration of a previous purchase to the same Apple ID / Google account works without any account on our end.

6. Sending Feedback

Settings → Send feedback opens your device's email app with a draft addressed to support@multicurrencyconverter.com. Whether and what you send is entirely up to you — we never auto-upload anything. You can optionally include a brief diagnostic block (app version, OS, language, theme, Pro state) and the on-device error log to help us reproduce a bug. You see and can edit the full email before sending.

7. The Website

www.multicurrencyconverter.com is served through Cloudflare for performance and security (DDoS protection, bot mitigation). Cloudflare may set strictly necessary cookies and process IP-level metadata as described in Cloudflare's privacy policy. The Website itself uses no analytics, no tracking pixels, no advertising tags, and no third-party fonts loaded from external CDNs. We do not set any first-party cookies.

8. Data Sharing

We do not sell, rent, lease, trade, or share user data with third parties for any purpose. We do not have user data to share. The narrow exceptions to "we don't share" are the technically necessary ones already named in §§ 3, 5, 7 — interactions with platform stores, our rate proxy, the jsDelivr fallback, and Cloudflare.

9. International Users — Your GDPR / UK GDPR Rights

If you are in the European Economic Area, United Kingdom, or Switzerland, you have the following rights regarding any personal data Exystems, LLC processes about you (which, as described above, is essentially limited to incidental server-log IP addresses):

• Right of access — request a copy of personal data we hold about you.
• Right of rectification — ask us to correct inaccurate data.
• Right to erasure ("right to be forgotten") — ask us to delete your data.
• Right to restriction of processing — ask us to pause processing.
• Right to data portability — receive your data in a machine-readable format.
• Right to object — object to processing based on legitimate interest.
• Right to lodge a complaint — with your local data protection authority (a list of EU authorities is at edpb.europa.eu; the UK authority is the ICO).

Legal basis for processing. Where we briefly process IP addresses in server logs, the legal basis is our legitimate interest (Article 6(1)(f) GDPR) in operating, securing, and protecting the App's infrastructure from abuse. No personal data is processed for marketing, profiling, or automated decision-making.

International transfers. Our infrastructure (Cloudflare, jsDelivr) operates globally and may route requests through data centers outside the EEA / UK. Where such transfers occur, they rely on standard contractual clauses or equivalent safeguards published by the respective providers.

To exercise any of these rights, email support@multicurrencyconverter.com. We will respond within thirty (30) days.

10. California Residents — CCPA / CPRA Rights

If you are a California resident, the California Consumer Privacy Act (CCPA), as amended by the CPRA, gives you the rights below. Because we do not collect personal information through the App, most of these rights have nothing to attach to — but stating them explicitly is required:

• Categories of personal information collected: none through the App. (For Website + rate-proxy traffic, only IP addresses incidental to HTTP requests, retained ≤30 days for security purposes.)
• Categories disclosed for a business purpose: none.
• Categories sold or shared: none. We do not sell, share, or otherwise monetize personal information.
• Right to know — request what personal information we have about you (in our case, none).
• Right to delete — request deletion (nothing to delete in our case, but server logs older than 30 days roll off automatically).
• Right to correct — request correction of inaccurate personal information.
• Right to non-discrimination — exercising these rights will not affect your access to the App.
• Right to limit use of sensitive personal information — we do not collect any.

To exercise any of these rights, email support@multicurrencyconverter.com.

11. Children's Privacy

The App is a general-purpose utility suitable for all ages and does not knowingly collect personal information from children. We do not directly target children under 13 (United States) or under 16 (European Union, UK), and the App's design — no accounts, no chat, no social features, no advertising — means there is no mechanism by which a child's personal information could reach us. Parents or guardians who have any concerns may contact support@multicurrencyconverter.com.

12. Data Retention

We retain server access logs for a maximum of thirty (30) days, after which they are automatically deleted. We have no other personal data to retain. On-device data (settings, cached rates, error log) lives on your device for as long as the App is installed; you can clear it at any time via Settings → Data → Clear all saved data, or by uninstalling the App.

13. Security

All network communication between the App and our rate proxy uses HTTPS (TLS) encryption. We follow industry-standard practices to protect the limited server infrastructure we operate. Because the App collects no personal data, there is essentially nothing on our side for an attacker to exfiltrate from a hypothetical breach.

14. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. The updated version will be posted on this page with a new effective date. Material changes that meaningfully affect your rights will be highlighted at the top of the page for at least thirty (30) days. Continued use of the App after the effective date of an updated version constitutes your acceptance of the changes. If you disagree with a change, you may stop using the App.

15. Contact

Privacy questions, GDPR / CCPA requests, or other concerns: