ACR Phone Dialer & Spam Call Blocker is a phone app that can replace your default dialer. It has a clean and fresh design with dark theme support. The app is currently under heavy development and might have some bugs, but you have the choice to disable it if you are not satisfied. The app has a simple contact list to quickly find and call your contacts, and you can customize the calling screen per contact and have video or photo as the call screen.

The app has a privacy feature where it asks only for permissions that are absolutely required. Your personal data such as contacts and call logs never transferred outside your phone. The app has a blacklist/spam blocking feature where you can add any unwanted numbers to the blacklist from the calls log, contacts list, or input the number manually. The blacklist has different matching rules such as exact or relaxed matching, and you can schedule blacklist rules per number.

The app has an outgoing call blocker feature where you can enable blocking outgoing calls to the numbers in your block list. It also has a call log feature where you can see and search all your calls in a clean interface. The app supports dual SIM phones, and you can set a default dialing account or decide just before each phone call. The app also has a SIP client for VoIP calls over 3G or Wi-Fi, and you can make and receive SIP calls right from the app with built-in SIP client.

ACR Phone Dialer & Spam Call Blocker has an auto dialer feature where you can easily reach busy lines by automatically calling until the call is connected. The app also has a call recording feature with advanced call recording features. You can also add and edit notes or reminders to calls during or after the call ended. The app has a backup feature where you can easily export or import your call logs, contacts, and call blocking database. The app also automatically uploads recorded calls to all major cloud service providers as well as your own web or FTP server.

Overall, ACR Phone Dialer & Spam Call Blocker is a feature-packed phone app that offers privacy, spam blocking, call recording, and many other features. The app is currently under heavy development and might have some bugs, but it has a clean and fresh design with dark theme support. The app supports dual SIM phones, and you can set a default dialing account or decide just before each phone call. The app also has a SIP client for VoIP calls over 3G or Wi-Fi, and you can make and receive SIP calls right from the app with built-in SIP client.