You'll need to save or discard a scan once you've captured it in order to save or share a new one.

The biggest downside of Scannable is that it doesn't really keep a list of previous scans. You can also choose to share scans in a message, email or other apps on your phone. You can set the app to automatically save any scans directly to your Evernote account or manually export them to your iCloud storage or the Camera Roll in the Photos app. If you'd rather not have it automatically scan anything in the camera's field of view, there's a manual capture mode too. It then quickly edits the scan to improve the contrast and brightness to make it as clear and readable as possible. Move on to another piece of paper if you have a multipage document and Scannable will combine them together and let you delete scanned pages you don't want to or need. The app does the rest of the work by searching the camera's field of view for a sheet of paper, automatically focusing the shot and taking a photo. All you need to do is open the app and point your camera at what you want to scan. What makes Scannable so great is that it's foolproof to use.

Evernote scannable app android