Privacy Policy
Effective date: July 25, 2026
Welcome to 21 Days Challenge. Your privacy is important to us. This Privacy Policy explains how our application collects, uses, and protects information when you use our app.
Information We Collect
The App is designed to work without requiring you to create an account. Depending on how you use the App, it may process the following types of information:
Information you enter in the App: challenge progress, reminders, profile name, preferences, saved wallpapers, purchases/entitlements, and other content you choose to create or save.
Device and app data: app version, device model, operating system version, locale/language, crash or diagnostic information, and other technical details needed for app functionality.
Notification settings: whether reminders and notification features are enabled on your device.
Ad-related data: when ads are shown, advertising networks may collect information such as device identifiers, approximate location, and interaction data in accordance with their own policies.
Remote content data: the App may retrieve challenge content, wallpapers, music metadata, and configuration updates from cloud services.
How Information Is Used
We use information to:
provide and improve the App’s features;
save your preferences, progress, and purchases locally on your device;
show reminders, wallpapers, music, and other in-app content;
deliver and measure advertisements where applicable;
detect errors, prevent abuse, and keep the App working reliably;
respond to support requests and feedback.
Local Storage
The App stores some data locally on your device, including preferences, challenge progress, purchased wallpaper identifiers, and other app state. This data remains on your device unless you delete the App or clear its data.
Third-Party Services
The App may use third-party services that process data under their own privacy policies, including:
Google Firebase for remote configuration and cloud-hosted content;
Google Mobile Ads for advertisements;
Google ML Kit Translation for on-device translation features;
Flutter Local Notifications for reminders and alerts;
Cloud Firestore for remote challenge, wallpaper, or music content;
Share Plus and URL Launcher for sharing content or opening external links.
These providers may collect or process data independently when their services are used.
Children’s Privacy
The App is not intended to collect personal information from children under 13, and we do not knowingly ask children to provide personal information. If you believe a child has provided personal data, please contact us so we can help address the issue.
Data Sharing
We do not sell your personal information. We may share information only when necessary to:
provide App functionality through trusted service providers;
comply with law, legal process, or valid government request;
protect the rights, safety, or security of users, the App, or others;
support a merger, acquisition, or similar business transfer.
Your Choices
You can usually control the following through your device or in-app settings:
notification permissions;
photo/media permissions used for saving wallpaper images;
ad personalization or tracking settings available on your device;
local app data by clearing the App’s storage or uninstalling the App.
Data Retention
Most user data is stored locally on your device and is retained until you delete the App or clear its data. Data processed by third-party services may be retained according to those providers’ policies.
Security
We use reasonable technical and organizational measures to protect information, but no method of transmission or storage is completely secure.
Changes to This Policy
We may update this Privacy Policy from time to time. When we do, we will revise the effective date above and update the policy in the App or wherever it is published.
Contact Us
If you have questions about this Privacy Policy or the App’s data practices, contact us at:
dharmik.azzure@gmail.com