Stack — Grids for Instagram Privacy Policy
Last updated: February 7, 2026
This Privacy Policy describes how Stack — Grids for Instagram ("the App"), developed by MadDev Labs, collects, uses, and protects your information.
1. About Stack
Stack is a photo editing application that helps users create grid layouts and panoramic images for their Instagram profiles. The app processes images locally on your device.
2. Information We Collect
Automatically Collected Information
- Device Information: Device model, operating system version, unique device identifiers
- Usage Data: App usage statistics, features used, grid types created
- Crash Data: Error logs and crash reports
- Advertising ID: For displaying personalized advertisements
3. Information We Do NOT Collect
- Your photos or images (processed locally on your device)
- Instagram account credentials or login information
- Content of created grids (stored only on your device)
- Personal information such as name or email
4. How We Use Your Information
- To provide the grid creation functionality
- To improve app performance and user experience
- To analyze usage patterns and popular features
- To display advertisements
- To fix bugs and technical issues
5. Photo Processing
All photo processing is done locally on your device. Your images are never uploaded to our servers. The app only accesses photos you explicitly select for grid creation.
6. Third-Party Services
Stack uses the following third-party services:
- Google AdMob: For displaying advertisements. Google Privacy Policy
- Firebase Analytics: For app analytics. Firebase Privacy
- Firebase Crashlytics: For crash reporting
7. Permissions
Stack requires the following permissions:
- Storage/Photos: To access photos for grid creation and save created grids
- Internet: For analytics and displaying advertisements
8. Data Storage
Created grids are saved to your device's gallery. App preferences are stored locally on your device. We do not store your images or creations on our servers.
9. Instagram Integration
Stack does not connect to your Instagram account. The app simply creates images that you can manually share to Instagram using Instagram's share functionality.
10. Data Security
We implement appropriate security measures to protect any collected analytics data. Your photos and creations remain on your device and are not transmitted to us.
11. Children's Privacy
Stack is not intended for children under 13. We do not knowingly collect personal information from children under 13.
12. Your Rights
You may:
- Delete the app and all locally stored data at any time
- Revoke photo access permissions in your device settings
- Reset your advertising ID in your device settings
- Opt-out of personalized advertising
13. Changes to This Policy
We may update this Privacy Policy from time to time. Changes will be reflected by the "Last updated" date.
14. Contact Us
If you have questions about this Privacy Policy, please contact us at: