Call Log Picker
This app can be used with CalenGoo to view your recent calls. Just click on the phone icon in CalenGoo's edit view to open this app. Then you can select a call and this way insert its phone number into the event that you were editing.
The reason why this is a separate app now is that Google does not allow all apps to access the call log any more, not even if the user allows it. It should make it more clear for the user which apps access sensitive data like the call log. For this reason only one app on the phone (the default phone handler) is allowed to access the call log:
It must be actively registered as the default Phone or Assistant handler on the device.
https://play.google.com/about/privacy-security-deception/permissions/
Because "Call Log Picker" is not a complete phone app and you probably don’t want to replace your current phone app, Call Log Picker cannot be downloaded from Google Play because Google does not allow it. Thus you have to download it here instead:
Call Log Picker Download