If you have already tried to record calls using other applications for recording calls and did not get a satisfactory result, try IntCall ACR, it just works the best.

Call Recorder - IntCall ACR lets you easily record your incoming and outgoing phone calls, record VoIP conversations, track an active calls and anonymous voice recorder.

The best part? It's FREE!

IntCall ACR supports:
• Record Phone calls
• Voice Recorder
• Voice Changer
• Trim Recordings Audio
• Call and recordings location
• Record Skype 7, Skype Lite
• Record Viber
• Record WhatsApp
• Record Hangouts
• Record Facebook Messenger
• Record Signal
• Record IMO
• Record WeChat
• Record KAKAO
• Record LINE
• Record Slack
• Record Telegram
• And More...

NOTE
• This app uses Accessibility services.
• Not all devices support VoIP calls recording.
• If it doesn't work on your device or you hear only yourself on playback, try changing the recording source in the Settings, or use auto-on speaker mode.

IMPORTANT
Please make sure that your device supports recording calls and the functions which you want work fine first before upgrade to premium.