This is useful and stable !You sometimes want to hidden your photo or video. don’t you? This app Ninja make hidden photo or video data.After making hidden by Ninja, any other app can’t open hidden data.And only Ninja can open them.This is free edition , so you can make hidden max 20 files.Please try to use this photo secret tool.If you like this app, please set rating.We tested by HTC & Samsung OS V2.2 .If you want unlimited edition, please upgrade to "Ninja Pro"We new version.How to update from old version.1) restore all hidden files.2) uninstall old version.3) install new version.If you have any problem, please inform to us. [email protected]