Media Vault is kind of the default, popular option in this space. It lets you hide photos, audios, PDF documents and videos as usual. it saved your data on your devices itself. No data is been upload to any server or third party. its completely safe with your device. it also provide bio-metric authentication for quick access of your hide files. Audio player, Image Player and Video player also internally build to play your hidden files. You can share files directly from third party apps to this in order to hide them. It has a lot of desirable features, including password hints saved, fingerprint scanner support, and SD card support with multi lingual features and Dark mode
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