Calculator: Simple & Clean Privacy Policy
In short: Calculator: Simple & Clean works on your device. Your numbers and calculations never leave it. If you keep history turned on, finished calculations are saved on your device only, and you can delete them at any time. To improve the app we use TelemetryDeck, a privacy-focused analytics service, to count anonymous usage events such as 'a calculation was completed' or 'the converter was opened'. These events never include the numbers you type, are not linked to you, and are not used for tracking or advertising. There are no ads and no accounts.
1. Who is responsible for your data
Calculator: Simple & Clean is published by Sebastian Doyle, an individual developer. For the UK GDPR and the EU GDPR, Sebastian Doyle is the data controller. For the Australian Privacy Act 1988 (Cth), Sebastian Doyle is the entity that handles your personal information in line with the Australian Privacy Principles (APPs).
Contact: sebastian.doyle@outlook.com
2. Data processed only on your device
This data is created and used inside the app on your iPhone or iPad. We never receive it.
| Data | Why | Lawful basis |
|---|---|---|
| Numbers and calculations you enter | Doing the maths | None needed: we never receive it |
| Calculation history (if Save history is on) | Letting you look back at and reuse results. Stored only on your device; delete it in the app or by deleting the app. | None needed: we never receive it |
| Settings (theme, app icon, haptics, decimal places, converter units) | Remembering your preferences | None needed: we never receive it |
| Premium purchase status | Unlocking Premium features; checked with Apple's StoreKit on the device | Contract (Art. 6(1)(b)): needed to provide what you bought |
3. Data that leaves your device
| Data | Sent to | Why | Lawful basis |
|---|---|---|---|
| Purchase and restore requests | Apple (StoreKit / App Store) | Taking payment and restoring Premium | Contract (Art. 6(1)(b)): needed to provide what you bought |
| Anonymous usage events (e.g. app opened, calculation completed, feature used), app version, OS version, device type, and a random pseudonymous identifier hashed on the device. Never the numbers or calculations you enter. | TelemetryDeck GmbH (Germany, EU) | Understanding which features are used so we can improve the app | Legitimate interests (Art. 6(1)(f)) |
4. Who receives data (processors and Apple)
- TelemetryDeck GmbH (Germany (EU)): privacy-focused app analytics; receives only anonymous usage events, no personal data, no IP addresses stored Privacy policy.
- Apple (US and worldwide): distributes the app and runs the App Store, and handles payment for any purchase. Apple is an independent controller of your Apple Account and payment data; we never see your name, email or card details. If you opt in to Share with App Developers in iOS Settings, Apple may give us anonymous crash reports and usage statistics. Apple Privacy Policy.
5. What we do not do
- We do not run advertising or ad networks.
- We do not track you across other companies' apps or websites.
- We do not sell or rent personal information.
- We never send the numbers or calculations you enter anywhere.
- We do not ask you to create an account.
6. Permissions and consent
The app does not ask for any iOS permissions.
7. Lawful bases (UK and EU GDPR)
- Contract: processing a purchase and restoring it, so you get what you paid for.
- Legitimate interests: validating receipts and preventing fraud or abuse of purchases. You can object (see section 10).
- Consent: access to device features such as the camera, microphone, location, photos, motion or notifications, given through the iOS permission prompt.
8. How long data is kept
Data on your device stays there until you delete it in the app or delete the app. If your device backs up to iCloud, the app's data may be in that backup, under Apple's control and your iCloud settings.
9. International transfers
We do not transfer your personal data anywhere, because we do not receive it.
Apple may process data in the United States and other countries under its own privacy policy and its transfer safeguards.
10. Your rights (UK and EU/EEA)
You have the right to access your personal data, to have it corrected or erased, to restrict or object to processing, to data portability, and to withdraw consent at any time (without affecting processing before you withdrew it). To use any of these rights, email sebastian.doyle@outlook.com. We will reply within one month. Because we hold little or no data that identifies you, we may need you to give us an identifier shown in the app.
You can complain to the UK Information Commissioner's Office (ico.org.uk) or to the data protection supervisory authority in the EU/EEA country where you live or work (list of EU authorities). We would appreciate the chance to fix it first.
11. Australian users
Under the Australian Privacy Principles you can ask to access or correct the personal information we hold about you, and you can use the app anonymously (no account or name is needed). Email us with any request or complaint; we will respond within 30 days. If you are not satisfied, you can complain to the Office of the Australian Information Commissioner (oaic.gov.au).
12. Children
Calculator: Simple & Clean is rated 4+ and can be used by anyone. It does not collect personal information from anyone, including children. Purchases are made through the Apple Account holder, who can use Apple's parental controls (Ask to Buy, Screen Time).
13. Security
On-device data is protected by iOS data protection and your device passcode. Data sent to processors travels over encrypted (HTTPS/TLS) connections.
14. Changes to this policy
If we change this policy we will update this page and the date at the top. If a change is significant, we will say so in the app or in the App Store release notes.
15. Contact
Sebastian Doyle · sebastian.doyle@outlook.com · Terms of Use