1Gallery: Photo Gallery/Vault
Overview
1Gallery: Photo Gallery & Vault, developed by MarsFrog Lab, combines a modern media gallery with an encrypted, hardware-backed privacy vault in a single mobile application. Standard mobile gallery apps often treat privacy superficially, relying on file-hiding tricks such as prefixing folder names with dots or placing empty .nomedia indicator files within directories. While these measures instruct the Android MediaStore indexer to ignore specific folders, the underlying files remain completely unencrypted and accessible to any third-party file manager or USB debugging connection. 1Gallery addresses this vulnerability by implementing real-time, symmetric AES (Advanced Encryption Standard) encryption across all vaulted assets.
When media files are moved into the encrypted vault partition, 1Gallery encrypts the raw binary data using cryptographic keys derived from user credentials, rendering the files unreadable to external file explorers or forensic utilities. The application balances this security architecture with a comprehensive media management engine. It natively decodes an extensive range of file formats, including uncompressed RAW camera captures (such as DNG, CR2, and NEF), vector-based SVG graphics, animated GIFs, and high-bitrate video files with embedded subtitle tracks. Its interface adheres to modern Material Design guidelines, offering pinch-to-zoom grid scaling, customizable folder views, and an EXIF metadata inspector that displays parameters like exposure values, sensor ISO, focal length, and embedded GPS coordinates.
The application provides multi-tiered authentication methods for accessing encrypted partitions, including numeric PINs, graphical patterns, and hardware biometric fingerprint verification. To protect against forced entry, 1Gallery includes a "Calculator Mode" disguise. When activated, the launcher icon and entry interface mimic an operational arithmetic calculator; entering a pre-configured mathematical formula unlocks the hidden vault partition. Additionally, 1Gallery mitigates data loss risks associated with local encryption by offering an encrypted, client-side backup pipeline directly to the user's personal Google Drive account. By unifying everyday media browsing, built-in photo/video editing tools, and encrypted file storage, 1Gallery eliminates the need to run separate viewer and locker applications.
Pros & Cons
Uses AES cryptographic encryption to secure vaulted files rather than superficial directory-hiding techniques.
Features a fully operational Calculator disguise mode to conceal the presence of hidden partitions.
Supports a wide variety of advanced media formats, including uncompressed RAW, SVG, and subtitled video.
Provides an encrypted, client-side backup pipeline directly to personal Google Drive storage.
Delivers a polished Material Design interface with fluid grid zooming and detailed EXIF metadata inspection.
Includes built-in image editing and video trimming tools without requiring external third-party software.
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Encrypted vaults require careful manual backup procedures to prevent permanent data loss during device migration.
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Encrypting and decrypting large batches of high-bitrate video files can cause noticeable processing latency.
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Unrestricted vault capacity and automated cloud backup scheduling require a premium license upgrade.
Download
Get it on Google Play 
Get it on App Store FAQs
How does 1Gallery protect files compared to standard photo-hiding apps?
Standard hiding apps simply rename file extensions or move them to hidden folders without altering their underlying data; 1Gallery encrypts the binary payload using AES encryption, ensuring files remain unreadable without authentication.
What happens if a device is factory reset without creating a manual backup?
Because encryption keys are tied to the local installation, a factory reset without an existing encrypted Google Drive backup or exported vault folder will permanently destroy access to vaulted files.
How does the Calculator Camouflage feature work?
When enabled, the application appears and functions as a standard calculator. Users input their pre-configured numeric passkey followed by a designated arithmetic symbol (such as =) to open the encrypted vault.
Can encrypted files stored on an SD card be read directly on a desktop computer?
No, vaulted files remain AES-encrypted binary blobs on the storage media and can only be decrypted and viewed through the authenticated 1Gallery application interface.
Does the application transmit personal media to private developer servers?
No, 1Gallery processes files entirely on-device; cloud backups are transmitted directly between the user's mobile device and their personal Google Drive account.
Hot Reviews
Summarized from Google Play reviews and community discussions.
Security-focused users praise the app's genuine AES encryption, noting that it provides reliable protection compared to basic gallery-hiding utilities.
Reviewers frequently highlight the Calculator mode as an effective disguise, noting that the operational calculator interface diverts casual inspection.
Users appreciate the Material Design UI and support for RAW and SVG formats, finding it a capable full-time replacement for pre-installed gallery apps.
Some users observe that decrypting and restoring large volumes of media to public folders can take time and occasionally requires manual directory refreshes.