Hvem der? (formerly known as Telefonterror.no→Stopp tlfsalg) is a full version Android app developed by Bjarte Aune Olsen. This business and productivity app is perfect for those who are tired of wasting their time talking to telemarketers. The app warns you when a telemarketer calls and ends the call or puts the phone on silent, so you don't have to deal with pesky salespeople.

With Hvem der?, you can block calls from salespeople and hidden numbers, and the app has all the numbers locally stored on your phone, making the lookup quick and stable even in low coverage areas. The app only shows information when a salesperson is calling, and you can clear the log with just one click and copy the contents of the log to other programs.

In addition to blocking calls, Hvem der? is also an extensive directory of thousands of telemarketers, providing information on the type of phone terror the company engages in, such as telemarketing, market research, opinion polls, customer follow-up, or charity organizations.

Overall, Hvem der? is an excellent app for those who want to avoid wasting their time talking to salespeople and want to keep their phone free from annoying calls.