Who Called is an application that provides an effective way of filtering out unwanted calls. By adding the number to the app, you can get notified if the number you have added to the app has been blocked by the community. The number is checked by the community and then the call is either allowed or blocked. This app can be very useful if you want to avoid telemarketers, spammers, and other unwanted callers.

The app also allows you to filter out calls based on the type of the call (e.g. spam, scam, and fraud).

You can get notifications for both incoming and outgoing calls.

In addition, the app allows you to add your own telemarketers or other numbers that you want to avoid.