Firewall vs NumBuster
| Firewall | NumBuster | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | iOS | Android, iOS, Web |
| Free plan | No | Yes |
| Paid from | 3.99 /mo | — |
| Robocall blocking | Yes | — |
| Caller ID | Yes | Yes |
| Call screening | Yes | — |
| Supported platforms | ios | both |
| Community reports | — | Yes |
Both are listed in Best Spam Call Blocking Apps. On Samsung Mobile US Press, NumBuster scores higher on our published basis.