Effectus Privacy Policy

1. Definitions

• Personal information: any information recorded electronically or otherwise that can identify a specific natural person, alone or in combination with other information.
• Sensitive personal information: personal information that could endanger personal safety or property if leaked or misused, such as health information.
• Anonymization: processing that renders personal information incapable of identifying a specific individual and not restorable.
• Anonymous device identifier: a randomly generated, unique code on your device that contains no personal identity information. It is used solely so our server can recognize "which device" a request comes from, and cannot be traced back to you.

2. How we collect and use your information

We describe data handling feature by feature below. If you do not use a feature, no corresponding data transfer occurs.

(1) Local management of tasks, habits, goals, journal and statistics

All content you create in the App (task titles and notes, habits and check-in records, objectives and key results, journal entries and images, statistics, memos, etc.) is stored only on your device. We do not collect or upload it.

(2) iCloud sync

When you enable iCloud sync, your data syncs across your devices through your own Apple iCloud account (Apple CloudKit). It is stored in Apple's infrastructure and protected by Apple's privacy policy; we have no technical means to access it. Data is stored encrypted, and end-to-end encrypted when iCloud Advanced Data Protection is turned on. iCloud sync is a subscription feature. After you turn off sync or cancel your subscription, data already synced to iCloud stays in iCloud and can be removed anytime via the in-app “Turn Off iCloud Sync and Delete Cloud Data” option. Device backups in iOS Settings are managed by Apple and are unrelated to the App's sync toggle. You can turn it off anytime in iOS Settings → [Your Name] → iCloud.

(3) Task and habit reminders

When you set a reminder, the App requests local notification permission and notifies you at your chosen time. The required information (reminder title and time) stays on your device.

(4) Calendar and Reminders sync

When you enable "Calendar integration", the App can read events from calendars you select in the system Calendar (titles, start and end times, etc.) and write App schedules to your system calendar, and it can sync Apple Reminders with your to-dos in both directions (titles, notes, priority, completion status, etc.). Such data stays on your device, and anything written back goes into your own system Calendar / Reminders accounts. If iCloud sync is enabled, copies of calendar events (including notes you add) sync with your other data through your own iCloud account; we have no technical means to access them. You can turn the feature off or adjust its scope anytime in Settings.

(5) Health data

When you enable an Apple Health–related habit (such as "sleep habits"), the App requests read access to one or more types of health data in Apple Health (depending on the habits you enable, e.g. sleep, steps, workout duration, mindful minutes, weight). This data is processed and displayed locally on your device and is never uploaded to our servers. If you revoke Health access, check-ins already generated stay on your device but stop updating. If you enable iCloud Sync, habit check-ins derived from Apple Health (such as counts converted from sleep duration) are synced along with your other data, through your personal iCloud account, among your devices. It is stored encrypted on Apple's infrastructure and protected by Apple's privacy policy; we have no technical means to access, view, or use it, and we never share it with third parties. You can turn off iCloud Sync anytime in your device settings. You can also revoke Health access anytime in iOS Settings → Health → Data Access & Devices.

(6) Subscription and purchase verification

Subscriptions are completed via Apple's in-app purchase; payment information is handled by Apple. To verify subscription validity, our server receives and verifies Apple-signed subscription receipts containing only the anonymous device identifier and transaction information — never your name, contact details or payment information.

To improve the subscription experience, the App reports anonymous subscription statistics to our server: event types only (e.g. paywall shown, purchase completed), timestamps, app version, business-dimension parameters such as the trigger context, and the anonymous device identifier — never any content you enter. These statistics are collected solely by our own server, with no third parties involved; raw records are retained on a rolling basis for no more than 90 days, and only per-day totals that cannot be linked to any individual are kept long term for dashboards and cost analysis.

(7) Data backup and export

The App provides backup and export features. These features are free of charge; exported backup files are saved only where you choose, are never uploaded, and are inaccessible to us.

(8) Crash and error logs

Crash and error logs are stored locally on your device for your own troubleshooting. They reach us only if you voluntarily contact us by email and attach them. If you use the in-app feedback form, the email automatically includes device diagnostics (such as the app version and device model) along with the message you write.

3. Permission list (iOS)

We request system permissions only when you use the corresponding feature. You may deny authorization; if you never use a feature, we neither request nor access it:

• Notifications: task and habit reminders, daily summaries and other local notifications;
• Health (HealthKit): read one or more types of health data (sleep, steps, workout duration, etc.) for health-habit features (optional);
• Calendar / Reminders (EventKit): two-way sync with the system Calendar and Apple Reminders (optional);
• Camera / Photo library: take or choose photos as journal attachments;
• iCloud (CloudKit): iCloud sync (optional);
• Biometrics (Face ID / Touch ID): app lock and privacy-content unlock. Verification happens on-device only, and the PIN stays on the device — nothing is uploaded.

4. Third-party SDKs and data sharing

The App contains no advertising, analytics, push or tracking third-party SDKs.

Data flows only in the following cases:

• Apple (iCloud / App Store / HealthKit): when you enable the corresponding features, processed under Apple's own privacy policies;
• Legal requirements: where disclosure is required by laws and regulations, judicial proceedings, or mandatory requests from competent authorities.

Without your consent, we will not share, transfer or publicly disclose your personal information to any other company, organization or individual.

5. Retention and location

• Local data: stored on your device until you delete the app or the data;
• iCloud data: stored in your Apple account until you delete it or disable sync;
• Server call metadata: retained on a rolling basis for no more than 90 days, then deleted or anonymized automatically;
• Anonymous subscription statistics: raw records are retained on a rolling basis for no more than 90 days, then deleted or anonymized automatically;
• Anonymous aggregate statistics: per-day totals only (e.g. daily event totals and distinct device counts) with no device-level records, kept long term for dashboards and cost analysis;
• Location: your core data lives on your device and in your own iCloud account. Our server only receives the minimal data described in the subscription verification and anonymous statistics sections above.

6. How we protect your data

• All network traffic uses HTTPS/TLS encryption;
• Our server follows least-privilege deployment with strict access control; API keys live only server-side and are never shipped inside the app;
• Server logs record call metadata only (e.g. IP address, request path, status code) and never message content, retained on a rolling basis for no more than 90 days;
• If a personal-information security incident occurs, we will inform you promptly of what happened, its impact, our response and the precautions you can take, and report to regulators as required by law.

7. Your rights

You may exercise the following rights over your personal information — either by operating directly in the App or system, or by contacting us:

• Access and correction: view and modify all of your data in the App at any time;
• Deletion: delete any data at any time; deleting the app removes all local data;
• Obtain a copy: use the in-app backup and export feature;
• Withdraw consent: disable iCloud sync, Health access, Calendar integration, notifications, or any other optional feature in Settings. Data already synced to iCloud can be removed at any time via the in-app “Turn Off iCloud Sync and Delete Cloud Data” option. Withdrawing consent does not affect processing already carried out based on your prior consent;
• Need help: for requests you cannot complete yourself, please email us at the address below.

8. Minors

The App is a general personal productivity tool and is not a product specifically designed for children. We do not ask users to provide their age or any other identity information and cannot tell whether a user is a minor. If a child under 14 uses the App, please make sure this happens with the consent and under the guidance of a parent or other guardian.

9. Updates to this policy

We may update this policy from time to time. Updates will be published on this page with the date at the top revised accordingly. For major changes (e.g. significant changes to the purposes, types or sharing of data, or to how you exercise your rights), we will notify you prominently within the App.

10. Contact us

If you have questions, suggestions or requests regarding the App or this policy, contact us at:

Email: feedback@entropyless.com.cn