Privacy Policy · Sticky Notes Pro

CloudEx Inc. ("we", "us", or "our") operates the "Sticky Notes Pro" app (the "Service"). This Privacy Policy explains what information we collect, how we use it, and the choices available to you. By using the Service, you are deemed to have agreed to the practices described in this Policy.

1. Our Core Principle

Sticky Notes Pro is a notepad that lets you keep the notes you write on your home screen as widgets and in the notification bar. Your notes (text, checklists, and handwritten sticky notes), version history, trash, widget appearance and photos, reminders, and app settings are all stored on your device. There is no account registration. We never view or collect your notes, or send them to our servers.

The only exception is when you create a shared note or join one by invitation. The contents of a shared note are stored on a server so that they can be synced between the members' devices (Section 2). Other notes leave your device only through actions you take yourself (backing up, exporting as text, sending to another app, and sending an invitation) and through Android's own backup feature.

2. Shared Notes

What is stored on the server: When you create a shared note or join one with an invitation code, the following are stored in Google's Firebase Realtime Database: the note's title, body, and checklist items (including the display name of the person who last changed each item and the time of that change), the member list (the display names you set and the time each member joined), anonymous user IDs, and the display names of the people who currently have the note open. Anonymous user IDs are created by the anonymous sign-in of Firebase Authentication and are not linked to your name or email address. This sign-in takes place only when you use shared notes.
Who can read it: Under the database rules, only the members of a shared note can read its contents and its member list. Except where required by law, we do not view the contents of shared notes or use them for any purpose other than syncing them for sharing.
Invitation codes: When you create a shared note, an 8-character invitation code is issued. So that it can be shown on the join confirmation screen, the invitation code includes the note's title. As a result, anyone who knows the invitation code can see the note's title before joining. The creator can regenerate the invitation code at any time (the previous code then stops working). You send the invitation message and code yourself, using an app of your choice.
When you are offline: Changes you make while you have no signal stay on your device and are sent to the server once you are connected. Only while you have shared notes does the app periodically re-read their contents from the server.
Deletion: When the creator chooses "Stop sharing for everyone", the note and its member list are deleted from the server. When a member chooses "Leave this shared note", that member is removed from the member list (when the creator leaves, one of the remaining members takes over as the creator). In either case, the copy of the note on each member's device remains.
Please note: Everything written in a shared note can be read and changed by all of its members. Do not write information you do not want the members to see, such as passwords.

3. Information We Collect

3.1 Information Collected Automatically

Anonymous crash reports: Via Firebase Crashlytics. When the app crashes, we collect the stack trace, device model, OS version, and app version. These reports contain no note contents and no personally identifiable information.
Purchase information: We use purchase tokens issued by Google Play to verify your one-time "Premium" purchase. We never receive payment information such as credit card numbers.
List of our other apps: To introduce our other apps, the app downloads their names, descriptions, and icons from our content server (static files on Cloudflare Pages). The request contains no personal data from the app, such as the contents of your notes. As with any request to a web server, the server receives your device's IP address as part of the connection.
Shared note information: Only if you use shared notes, the information described in Section 2 is stored on the server.

3.2 Information Stored Only on Your Device

Notes, handwritten sticky notes, version history, and trash: Stored in the app's private storage on your device. The version history keeps up to the latest 20 versions of each note, and notes moved to the trash are deleted automatically after 30 days.
Widget photos: If you choose a photo as a widget background (Premium), a reduced copy of that photo is saved in the app's private storage. The app reads only the photo you choose and does not access any other photos on your device.
App settings: The appearance of widgets and notifications, reminders, the display name you use in shared notes, lock settings, and the like are stored on your device.
Backups and exports you make: Files created with "Back up now", "Export as text", and automatic backup (Premium) are saved only to the location you choose (such as a folder on your device or Google Drive). If you choose a service such as Google Drive, those files are handled according to that service's privacy policy. We never receive these files.
Sending to other apps: When you use "Send" or share to another app, the text of that note is passed only to the app you choose.
Android backup: If backup is turned on in your device settings, Android may include your notes, handwritten sticky notes, version history, and app settings in the backup it saves to your own Google account. They may also be transferred when you move your data directly to a new device. This is done by Android as one of its features, and we have no access to the contents.
When you uninstall: Uninstalling the app or clearing its data deletes the notes, version history, and settings on your device. Backup files you have made remain until you delete them. Shared-note data on the server is deleted through the deletion steps described in Section 2.

3.3 Information We Do Not Collect

The contents of notes you have not shared
Your name, email address, phone number, or contacts (the app has no account registration)
Location information
Biometric information such as fingerprints or faces (the app lock and note locks are verified through your device's screen lock, and the app never receives biometric information)
Other photos and files on your device, the contents of other apps, or your website browsing history
Your device's advertising ID

3.4 Permissions the App Requests and Their Purposes

Sticky Notes Pro uses the following permissions only for the stated purposes.

Notifications (POST_NOTIFICATIONS, Android 13 and later) — Used to pin notes to the notification bar, to show reminders, for the "Write a note" notification, and to let you know when another member has changed a shared note.
Run at startup (RECEIVE_BOOT_COMPLETED) — Used to re-pin the notes you pinned to the notification bar and to reschedule reminders after your device restarts or the app is updated.
Biometrics (USE_BIOMETRIC / USE_FINGERPRINT) — Used to verify the app lock and per-note locks with your device's screen lock (PIN, pattern, fingerprint, or face). Biometric information is never passed to the app.
Internet (INTERNET) and network state (ACCESS_NETWORK_STATE) — Used to sync shared notes (including resending changes once you are connected), for anonymous crash reports, to verify purchases on Google Play, for in-app reviews and in-app updates, to download the list of our other apps, and to show this privacy policy in the app. Writing, pinning, and reminders for notes other than shared notes do not require an internet connection.
Prevent sleep (WAKE_LOCK) — Used, while you have shared notes, to let background re-reading and resending (Android's WorkManager) run to completion.
Google Play billing (com.android.vending.BILLING) — Used to purchase and restore Premium.

Because the app receives only the one photo you choose in Android's photo picker, it does not request permission to access your photos and videos. Likewise, for backup destinations and files to import, the app accesses only what you choose in Android's file picker.

4. How We Use Information

The limited information we collect is used only for the following purposes:

Providing, operating, and maintaining the Service
Syncing shared notes between members
Verifying your Premium purchase
Diagnosing and fixing crashes
Responding to support inquiries
Complying with applicable laws

We never sell your information or share it with third parties for advertising purposes.

5. Third-Party Services

Sticky Notes Pro uses the following third-party services. Each service has its own privacy policy.

Firebase Crashlytics (Google LLC) — anonymous crash diagnostic data
Firebase Authentication (Google LLC) — anonymous sign-in when you use shared notes
Firebase Realtime Database (Google LLC) — storing and syncing shared notes
Google Play Billing (Google LLC) — the one-time Premium purchase; payment is completed on Google Play, and we receive only a purchase token
Google Play In-App Review / In-App Updates (Google LLC) — let you rate the app and update it without leaving it; handled by Google Play
Cloudflare Pages (Cloudflare, Inc.) — delivers the list of our other apps (static files)

6. Data Retention

Crash reports: retained for 90 days, then deleted.
Shared notes: kept on the server for as long as sharing continues, and deleted when the creator stops sharing. You can also request deletion at the contact address below.
Notes, version history, and settings on your device: kept until you delete them, uninstall the app, or clear its data. Notes in the trash are deleted automatically after 30 days, and the version history is deleted automatically, oldest first, beyond the latest 20 versions.

7. International Data Transfers

We are based in Japan. The infrastructure used to store shared notes, for crash diagnostics, and to deliver the list of our other apps (including in the United States) may be located in various countries. When you use the Service, the information described above may be processed outside your country of residence under standard contractual safeguards.

8. Your Rights

Depending on where you reside (e.g., the EEA, UK, California, Japan), you may have the right to request disclosure, correction, or deletion of the information we hold. You can:

Delete notes in the app at any time, or delete the notes and settings on your device by uninstalling the app or clearing its data
Leave a shared note; as the creator, stop sharing for everyone and delete its data on the server
Withdraw the notification permission in your device settings at any time
Contact us at the address below to make a request regarding the information we hold (including shared-note data on the server)

9. Children's Privacy

Sticky Notes Pro is not directed to children under the age of 13 (or the minimum age applicable in your region). If we find that we have inadvertently collected information from such a child, we will delete it promptly upon being contacted.

10. Changes to This Policy

This Privacy Policy may be updated from time to time. The latest version is always published at this URL together with its effective date. We will also notify you within the app of significant changes as appropriate.

11. Contact

For questions about privacy, data requests, or to report concerns, please email us at .

CloudEx Inc. (Japan)

Effective Date: October 25, 2026