If you’re anything like me, you’ve probably seen an increasing number of spam calls to your phone. If I don’t recognize a number, my usual routine was to (1) let the call go to voicemail, and then (2) look it up with a reverse phone search. More often than not, it came back as spam.

Then one day, I found an app, and I’m honestly surprised it doesn’t get more mentions. Recently rebranded as Hiya from Whitepages ID, the app is a lot like a blacklist for your phone. You can use it to perform reverse phone searches, but it also features an automatically updated list of numbers flagged as spam by adding a contact called Spam. This means when someone calls you, the caller will actually show up as Spam not an unknown number. You can also manually add users to a blacklist.

It’s saved me a ton of time, and I no longer worry about who’s calling me. Did I mention it’s free?