A Free program for Android‚ by SMSROBOT LTD

The app mainly serves as an automatic call recorder. You can record calls manually or automatically or in MP3 or WAV format. You can also set the audio quality to your liking and play the file thanks to the app’s built-in player. 

There is a handy filter option that lets you record incoming and outgoing calls by unknown or saved contacts. Uploading them to your Google Drive or Dropbox is a great way to keep a backup of your calls should data loss occur. You may also send a copy of the audio on WhatsApp or Viber. Not only that, the application detects spam calls and identifies any unsaved contact numbers for your safety.