Interval Timer:Workout Timer Privacy Policy
This Privacy Policy applies to the Interval Timer:Workout Timer mobile application (the “App”) and its supporting cloud service. The App is offered outside mainland China. Interval Timer:Workout Timer is operated by the independent developer HaoZu Peng (“we”, “us”, or “our”). Questions and privacy requests may be sent to 3613719357@qq.com.
1. Information processed on your device
The App stores workout plans, exercise names, timer settings, language and voice preferences, reminder settings, and workout history locally on your device. We do not receive this local workout content through the App’s cloud service. You can remove it using the App’s clear-history controls or by deleting the App.
2. Information sent to the App’s cloud service
To provide three free workouts per App Store account and prevent that allowance from resetting after reinstallation or a device change, the App sends an Apple-generated App Transaction identifier to our Cloudflare Worker over HTTPS.
- The raw App Transaction identifier is used transiently to calculate an HMAC-SHA-256 value with a secret key. We do not store the raw identifier in D1.
- Cloudflare D1 stores the resulting 64-character pseudonymous hash, the number of free workouts remaining, the total consumed count, and record creation/update timestamps.
- Cloudflare may process IP addresses and technical request metadata to deliver, secure, and operate its network. We do not intentionally write IP addresses to the App’s D1 allowance table.
The identifier is not your Apple Account email address, real name, payment-card number, precise location, contacts, photos, or health record. Although pseudonymized, we treat it as protected information because it distinguishes one App Store account for this App.
3. Purchases and subscriptions
In-app purchases, the seven-day trial, monthly subscription, lifetime purchase, billing, refunds, and purchase restoration are processed by Apple through the App Store and StoreKit. The App reads the product identifier and entitlement or transaction status needed to unlock Premium. We do not directly receive or store your full payment-card or bank details.
4. Information we do not collect
Interval Timer:Workout Timer does not request or collect your precise GPS location, address book, camera photos, microphone recordings, advertising identifier, social-media profile, real name, postal address, or phone number. The App does not include advertising, remarketing, cross-app tracking, or Google/Firebase behavioral analytics. Workout reminders are scheduled as local device notifications.
5. Support communications
If you email us, we receive your email address and the content and attachments you choose to provide. We use them only to respond, troubleshoot, protect the service, or comply with law. Please do not send health information, passwords, payment-card details, or copies of identity documents unless specifically necessary and requested through a secure process.
6. Purposes and legal bases
We process the information described above to provide requested App functionality and purchases, maintain the three-workout allowance, restore Premium access, prevent abuse and fraud, secure the service, answer support requests, and comply with legal obligations. Where GDPR or UK GDPR applies, the relevant legal bases are performance of a contract or steps requested before entering one, our legitimate interests in providing and protecting the service and enforcing the one-time allowance, and compliance with legal obligations. We do not sell personal information or share it for cross-context behavioral advertising.
7. Service providers
- Apple App Store and StoreKit — purchases, subscriptions, trials, restoration, and entitlement information. See Apple’s Privacy Policy.
- Cloudflare — HTTPS delivery, security, Worker API execution, and D1 database hosting. See Cloudflare’s Privacy Policy.
These providers process information under their own terms and privacy obligations. We require service providers under our control to use information only to provide and protect the relevant service.
8. International processing
Because the App is distributed internationally and uses Apple and Cloudflare, information may be processed outside your country, including in countries with different data-protection laws. Where required, we rely on provider contractual safeguards and other lawful transfer mechanisms. By using the service, you understand that network requests will be routed through these international service providers.
9. Retention and deletion
- Local plans, settings, and history remain until you clear them or delete the App.
- The raw App Transaction identifier is not persisted in D1.
- The pseudonymous allowance record is retained while reasonably needed to operate the service, enforce the one-time free allowance, prevent abuse, resolve disputes, and meet legal obligations. It may remain after App deletion so reinstalling does not reset the allowance.
- Support communications are retained as reasonably needed to resolve the request and maintain security or legal records.
You may request deletion or exercise another applicable privacy right by emailing 3613719357@qq.com. We may need reasonable verification to protect other users and locate a pseudonymous record. We will explain any lawful exception or inability to identify a record from the information provided.
10. Your privacy rights
Depending on where you live, you may have rights to request access, correction, deletion, restriction, objection, or portability, and to complain to a privacy regulator. California residents may request information about categories collected and deletion, subject to applicable law. We do not sell or share personal information as those terms are used for cross-context behavioral advertising. EU, EEA, and UK users may object to legitimate-interest processing and lodge a complaint with their local supervisory authority. We will not discriminate against you for exercising an applicable right.
11. Children
Interval Timer:Workout Timer is a general fitness timing tool and is not directed to children under 13. We do not knowingly collect personal information from children under 13. Where local law requires a higher age for independent consent, a parent or guardian should supervise use. If you believe a child has provided information, contact us so we can review and delete it where required.
12. Security
We use HTTPS, pseudonymization through keyed HMAC-SHA-256, secret management, access controls, and data minimization. No method of electronic transmission or storage is perfectly secure, so we cannot guarantee absolute security.
13. Changes to this policy
We may update this policy when the App, providers, or legal requirements change. We will update the date at the top and provide additional notice in the App when a change is material. Continued use after an effective update is subject to the updated policy.
14. Contact
Operator: HaoZu Peng
Email: 3613719357@qq.com
Subject suggestion: Interval Timer:Workout Timer Privacy Request