This privacy policy explains how the MyCal mobile app ("MyCal", "we", "our", "us") handles your data. MyCal is published by Mao Apps and is available on Google Play and the Apple App Store under the bundle identifier com.mycal.app.
Short version: MyCal is designed to work primarily on your device. We do not collect your name, email address, phone number, contacts, location, or any personally identifying information directly, and MyCal does not display ads inside the app. The data the app handles is either stored locally on your phone or sent to the third-party services listed below to measure our marketing, process in-app purchases, and check for required app updates. This includes sharing a device advertising identifier and basic app events with Meta (Facebook) for advertising attribution.
This data never leaves your device. You can clear it at any time by clearing app data in your operating system's settings or by uninstalling the app.
my-apps-hosting-default-rtdb.firebaseio.com to read the minimum required app version. This request contains no personally identifying data and no information about your calculations. It is used solely to determine whether you need to update the app for important fixes.Each permission is requested only when you open a feature that needs it, and is used solely for that feature.
| Permission | Used for | Leaves device? |
|---|---|---|
| Photo library (read) | Selecting an image to use as your calculator's background theme | No — the image is read locally; only the file URI and a derived color palette are saved on your device |
| Network | Advertising attribution (Meta), purchase verification, app update check | Yes — see Section 1 |
| Advertising ID / Tracking (Android AD_ID; iOS App Tracking Transparency) | Lets the Meta SDK use your device advertising identifier to attribute app installs to our ad campaigns | Yes if you allow it; on iOS no identifier is used unless you accept the tracking prompt |
MyCal does not access your camera, microphone, contacts, calendar, precise location, motion sensors, or any other sensor or system data.
When you tap "Share" on a saved sheet, MyCal renders an image of the calculation on your device and hands it to your operating system's share sheet. From there, you choose where it goes (a messaging app, email, social platform, etc.). MyCal does not upload the image to our servers; we never see what you share.
MyCal does not display advertising inside the app. We do run our own paid campaigns on platforms such as Meta (Facebook and Instagram), and MyCal includes the Meta SDK so we can measure which campaigns lead to installs. To do this, the Meta SDK collects your device advertising identifier and basic app events and shares them with Meta. You can limit or reset this at any time:
See Meta's Privacy Policy for details on how Meta handles this data.
MyCal offers a Premium upgrade with three options: Lifetime (one-time purchase), Yearly subscription with a 7-day free trial, and Monthly subscription. Purchases are processed by Apple (App Store) or Google (Play Store); we never see or store your payment details.
RevenueCat receives the purchase token from Apple or Google to verify your entitlement across devices and reinstalls. It does not receive your name or contact information. See RevenueCat's privacy policy for details.
MyCal is not directed at children under the age of 13 (or under the minimum digital-consent age in your country, whichever is higher). We do not knowingly collect personal information from children. If you believe a child has provided personal information through MyCal, please contact us at the address below and we will delete it.
What is deleted on request: the advertising identifier and app-event data shared with Meta, and the subscription records held by RevenueCat. What stays only on your device: your saved sheets, themes, and settings — these are stored locally and are removed when you clear app data or uninstall the app.
How to request deletion (steps):
Subscription records held by RevenueCat are otherwise retained while your subscription is active and for the period required by Apple or Google receipt-validation policies. Meta retains shared data per Meta's Privacy Policy.
Depending on your jurisdiction, you may have the right to access, correct, or delete data held about you, to restrict or object to certain uses, to withdraw consent for ad personalization, and to lodge a complaint with a data protection authority.
If you are in the EEA, UK, or Switzerland (GDPR): the legal basis for sharing your advertising identifier and app events with Meta is your consent; our legitimate interests cover app-update checks and purchase verification. You can withdraw consent at any time through your device's tracking/ad settings (App Tracking Transparency on iOS; advertising ID controls on Android).
If you are a California resident (CCPA/CPRA): we do not sell personal information for money. However, when you allow tracking, MyCal shares device identifiers (such as your advertising ID) and app events with Meta for advertising attribution, which may be considered "sharing" under the CCPA. You can opt out at any time by denying the App Tracking Transparency prompt on iOS or by resetting/limiting your advertising ID in your Android settings. You also have the right to know what personal information is collected about you, to request deletion of that information, and to non-discrimination for exercising these rights. Contact us at the address below to make a request.
The third-party services we use (Google, Apple, Meta, RevenueCat, Firebase) operate globally and may process data in the United States and other countries. Where required by law, these services rely on Standard Contractual Clauses or equivalent mechanisms for international transfers.
We do not operate user accounts or collect identifying personal data, which significantly limits the data at risk. The third-party services we rely on (Meta, RevenueCat, Firebase) apply industry-standard security practices to data they process on our behalf. All network requests sent by MyCal use HTTPS.
If this policy changes materially, we will update the "Last updated" date above and, where appropriate, surface a notice within the app. Continued use of MyCal after a change constitutes acceptance of the revised policy.
Questions, requests, or concerns: myao.apps@gmail.com