Local-first by default
Your scans, OCR results, edits, exports, and vault items generally remain on your device unless you choose to share or back them up.
Privacy Policy
Lihenium: Scan PDF & Vault
This Privacy Policy explains how Lihenium Studio handles information when you use Lihenium: Scan PDF & Vault (the “App”). The App is designed primarily as a local-first document utility, so most scanning, editing, OCR, vault protection, and file management happen on your device unless you choose to use optional online services.
Quick Access
Cleaner shortcuts for desktop and mobile reading.
Optional Google features
Google Sign-In and Google Drive backup are optional. Most core document features can be used without signing in.
Limited third-party use
If enabled in your app build, services such as Google Play Billing, Google Mobile Ads, Firebase Crashlytics, and ML Kit may process limited technical data.
Your control stays central
You can manage permissions, sign out, delete local files, remove backups, and uninstall the App whenever you want.
1. Who We Are
App: Lihenium: Scan PDF & Vault
Publisher: Lihenium Studio
Country: India
Contact: lihenium.app@gmail.com
In this policy, “we,” “us,” and “our” refer to Lihenium Studio.
2. Information We Handle
2.1 Content you create or import
- Scanned pages, imported images, PDFs, OCR text, edited files, exports, and file metadata.
- Vault content and vault-related local settings used to protect your private files.
- Files you intentionally open through the camera, Android file picker, share sheet, or supported import flows.
2.2 Optional account information
If you choose to sign in with Google, the App may access and locally store basic account details such as your email address, display name, profile picture, and Google account identifier so that optional account-based features can work properly.
2.3 App settings and technical state
- Theme, language, file preferences, app lock settings, and related local configuration.
- Backup state, restore state, processing status, and other technical data needed to run features you request.
2.4 Diagnostics, purchases, and advertising data
If these services are enabled in your version of the App, we may receive limited technical or status data from third-party providers such as Google Play Billing, Google Mobile Ads, and Firebase Crashlytics.
3. How We Use Information
- To provide scanning, OCR, PDF tools, document organization, secure vault, export, and related file features.
- To save, restore, back up, and manage your files when you choose those actions.
- To support optional sign-in and Google Drive backup features.
- To verify premium purchases or subscription entitlements handled through Google Play.
- To improve reliability, investigate crashes, and respond to support requests.
- To comply with legal obligations and protect users, the App, and third-party services from misuse.
We do not operate our own document-processing server for the App’s core scanning and editing functions.
Most core processing is intended to happen locally on your device.
4. Local Processing and Storage
Lihenium is designed primarily as a local-first app. In normal use, your scans, PDFs, OCR output, vault files, previews, and edits remain on your device or in storage locations that you choose.
- Most document processing and file handling occur on-device.
- Backups are only created when you actively choose to use backup or restore features.
- Files may leave your device only when you explicitly export, share, print, email, or back them up.
Please keep your device, vault passcode, PIN, and recovery details secure. If you lose access credentials,
some protected content may become inaccessible.
5. Permissions
The permissions requested may vary depending on Android version and the features you choose to use.
6. Google Services and Third Parties
6.1 Google Sign-In
Google Sign-In is optional. If you choose to use it, the App may locally keep basic account information so it can maintain your sign-in state and enable account-based features.
6.2 Google Drive backup
If you enable backup or restore, the App may use Google Drive’s hidden appDataFolder area for
app-specific backup storage. Backups are created only when you choose to use those features.
6.3 Google ML features
The App may use ML-based features for OCR, translation, scanning assistance, language identification, or QR-related functionality. These features are generally intended to work on-device, although some models or supporting components may need to be downloaded.
6.4 Ads, billing, and diagnostics
Depending on what is enabled in your app build, Google Mobile Ads, Google Play Billing, or Firebase Crashlytics may process limited technical data, billing status, crash reports, or advertising-related information under their own policies.
7. Sharing of Information
We do not sell your personal data. Information may be shared only in limited situations such as:
- With Google services or other providers that you choose to use inside the App.
- When you export, print, email, share, or open a file with another app by your own action.
- When crash reporting, billing, or ad services are enabled and need limited technical data to function.
- When disclosure is required by law or necessary to protect rights, security, or platform integrity.
8. Retention and Deletion
- Local files and vault content: remain on your device until you delete them, clear app data, or uninstall the App.
- Local sign-in state: remains until you sign out, clear app data, or remove the App.
- Cloud backups: remain until you delete or replace them, or revoke the App’s access where applicable.
- Third-party service data: may be retained by Google, Firebase, or other providers under their own retention rules.
9. Your Choices
- Use most core document features without signing in.
- Grant, deny, or revoke permissions through Android settings.
- Sign out if you no longer want to use account-based features.
- Delete local files, vault items, exports, or backups whenever you choose.
- Manage Google account access, advertising settings, or connected services through your Google settings where relevant.
- Clear app data or uninstall the App to remove locally stored information.
There is no standalone Lihenium cloud account operated by us. If you use Google features, some privacy controls may
need to be managed through your Google account as well as inside the App.
10. Security
We use reasonable technical and organizational measures to help protect information handled by the App. This includes local storage protections, Android security features, optional vault protections, and the security controls offered by platform providers that support the App.
- Vault and app-lock features are intended to add local protection for private files.
- Biometric and lock features depend on your device capabilities and configuration.
- No storage, transmission, or security method can be guaranteed to be completely secure.
11. Children’s Privacy
The App is intended for a general audience and is not directed to children under 13. We do not knowingly collect personal information from children in a way that is intended to target or profile them. If you believe a child has provided personal information in a way that requires deletion or parental action, please contact us.
12. Changes to This Policy
We may update this Privacy Policy from time to time to reflect changes in the App, legal requirements, platform rules, or third-party services. When we make updates, we will revise the effective or updated date on this page and publish the latest version at the active policy URL.
13. Contact
For privacy questions, requests, or concerns regarding Lihenium: Scan PDF & Vault, contact:
Lihenium Studio
Email: lihenium.app@gmail.com
Please include enough detail for us to understand your request. If your question is related to Google account access, billing, ad preferences, or cloud backup permissions, you may also need to use the controls provided by those services.