Summary: This app stores all your data locally on your device. We do not collect, transmit, or store any personal information on our servers. Location data is used only for map-based measurement features and Qibla direction, and is not stored or transmitted. Third-party services used include Google AdMob for advertisements and Google Maps for map measurement features.
1. Introduction
Welcome to জমির হিসাব ক্যালকুলেটর ("the App"), developed by Anwar Hossain. This Privacy Policy explains how we handle information when you use our land area calculation app.
By using the App, you agree to the practices described in this Privacy Policy.
2. Information We Collect
We do not collect any personal information. The App is designed to work entirely offline, and all data remains on your device.
The following data is stored locally on your device only:
Land Owner Files: Files you create for each land owner or client
Calculation Data: Land measurements, dimensions, and calculated areas saved within each file
Map Measurements: Land area measurements made using the map feature, including coordinates of marked points
Freehand Sketches: Hand-drawn sketches and drawings you create for land visualization
App Preferences: Language settings, theme (dark/light mode), decimal precision
Custom Units: Any custom land units you add
Location Data:
Map Measurement: When you use the map measurement feature, your location is accessed to center the map and allow you to mark land boundaries. This data is processed locally and not transmitted to our servers.
Compass & Qibla Direction: The compass feature uses device sensors (magnetometer and accelerometer). The Qibla direction feature may use your location to calculate the direction to Mecca. Location data is used only for calculation and is not stored or transmitted.
We do NOT collect:
Personal identification information (name, email, phone number)
Device contacts or calendar
Photos or files (other than sketches you create within the app)
Usage analytics or behavior tracking
Location history or tracking data
3. Third-Party Services
Google AdMob (Advertising)
The App uses Google AdMob to display advertisements. Google AdMob may collect certain information to serve personalized ads, including:
Device identifiers (Advertising ID)
Device information (model, operating system version)
IP address (for approximate location)
Ad interaction data (impressions, clicks)
You can opt out of personalized advertising by visiting Google Ads Settings.
Google Maps Platform (Map Measurement Feature)
The map measurement feature uses Google Maps SDK and Google Places API. When using these features, Google may collect:
Location data (when you grant permission)
Search queries (when searching for locations)
Map interaction data
Device and connection information
This data is processed by Google according to their privacy policy.
For more information about Google's data practices, please visit:
The App requests the following permissions to provide its features:
Location (ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION): Used for map measurement feature to show your current location and for Qibla direction calculation. Location access is optional and only used when you access these specific features.
Internet (INTERNET): Required for displaying advertisements and loading map tiles in the map measurement feature.
Body Sensors / Motion Sensors: Used by the compass feature to detect device orientation and display compass direction.
You can revoke these permissions at any time through your device's Settings. Some features may not work without the required permissions.
5. Data Storage
All your calculation data, files, and preferences are stored exclusively on your device using:
Local SQLite database (for land owner files, calculations, and map measurements)
Android DataStore (for preferences)
Local storage (for freehand sketches)
We do not have access to this data, and it is not transmitted to any servers.
6. Data Export and Backup
The App provides features to export and backup your data:
PDF Export: Export calculations as PDF documents
Image Export: Share calculations as images
Backup: Create JSON backup files saved to your device
Restore: Import data from backup files
These files are stored on your device and shared only when you choose to do so through Android's share functionality.
7. Your Controls
You have full control over your data:
Delete Data: Delete individual calculations or entire land owner files from within the App
Export Data: Use the backup feature to export all your data
Clear Preferences: Reset app settings through Android Settings
Uninstall: Removing the App will delete all associated data
8. Children's Privacy
The App is not directed at children under 13 years of age. We do not knowingly collect any information from children. The App is a general-purpose utility tool for land measurement calculations.
9. Data Security
Your data is protected by Android's built-in security features:
App data is stored in a private directory accessible only to this App
Android's encryption protects data on encrypted devices
File sharing uses Android's secure FileProvider system
10. Changes to This Policy
We may update this Privacy Policy from time to time. Any changes will be reflected on this page with an updated effective date. We encourage you to review this policy periodically.
11. Contact Us
If you have any questions about this Privacy Policy or the App, please contact us: