simple lecture recorder on Android mobile

I need an Android app. It will be helpful for our coaching teacher to create their lecture video. in this video only mobile screen along with only voice of teacher is get recorded. This app is very simple and I need following things in it - -Login/Sign Up - teacher simple profile - open images from gallery and now with these images become slides - when lecturer click on record it should start record screen and audio... -also simple editing option like underline or marking should be there while recording on these slides - Final stage app should submit the video to our mailid or database - the video which is created by this app should not be available to user - Voice and Video SYCRONISATION SHOULD BE THE BEST