In version 1.x.x and 2.0.x, the app reads the phone's call log for filter editing. Starting version 3.0.0, the app retrieves the incoming call recorded.
In the call log page, the phone call log is listed.
Starting from version 1.7.0, you may swipe sideways across the screen to exit the page.
Starting from version 2.0.0, the list can also be sorted by incoming number. Select it in the options menu.
Long pressing a call log item brings up the context menu which features:
Looking up the contact name, if any.
Add a filter rule.
Edit the filter rules.
Do a web search.
If call log page is brought up by clicking notification, any filter rule changes are not immediately reflected on the app's main screen. This issue is solved in version 1.6.0.
When this problem arises, exit the app's main screen and launch the app again.
This issue does not arise when the call log page is brought up from the options menu.
When importing CSV or clearing rules, it is advised not to modify the filter rule in call log. It can confuse the app. Version 1.6.0 avoids this issue by disallowing filter editing in context menu.