Coming soon to the App StoreComing soon

You put your friends on,
we keep the record.

Ask for a song. Friends answer.
Every cosign goes on the record.

Coming soon to the App Store See how it worksHow it works
Cosign Inbox: activity on your ask, with friends cosigning, passing and hearing your picks
Cosign Explore: trending asks, asks closing soon and songs that just landed
Cosign Home: today's ask, asks from friends that need you, and your own ask with five answers

Four moves.
That’s the app.

Ask, put someone on, cosign or pass, then watch it spread.

Ask for a song

Post an ask like “6am run, make it hurt.” Friends answer with a song and a note on why.

Your ask screen: five answers to 6am run, make it hurt, each a song with a note, plus a link anyone can answer from

Plus one ask from Cosign every day.

Put someone on

Found a song a friend needs? Send it. Cosign shows who’s most likely to cosign it.

Put someone on screen: sending Saturn by SZA, with Sofia and Marcus marked likely to cosign

Cosign or pass

Play it, then make the call. A cosign counts toward their record. A pass stays between you two.

Put-on screen: Pink + White by Frank Ocean playing its preview, with a Cosign button and a Pass that only Jack sees
Path screen: No One Noticed by The Marías reached 9 people and was cosigned 7 times, three steps deep from you

Watch it spread

When a friend cosigns and sends it on, you see every step of the path, all the way back to you.

Your record

Your taste,
on the record.

Your friends cosign or pass on the songs you send. The cosigns stack up on your profile, so they can see exactly how good your taste is.

  • LandedCosigns out of every verdict on what you’ve sent.
  • Called earlySongs you put friends on to before they charted.
  • ReachEveryone who cosigned after a song came through you.
Amara's profile in Cosign: 31 of 44 landed, 2 called early, a put-me-on-to request, and a reach of 23 people, led by No One Noticed

The music
doesn’t stop here

Songs play a 30-second preview right in the app, then open in Spotify, Apple Music or YouTube Music.

Cosign isn’t where you listen.
It’s why you press play.

Coming soon to the App Store Questions

Good questions

Do my friends need the app to answer?
No. Share an ask as a link and anyone can answer with a song from their browser.
Who sees it when I pass on a song?
Only the person who sent it. Passes never show on your profile or anyone’s feed.
Which music apps does it work with?
Picks open in Spotify, Apple Music or YouTube Music, and songs play a 30-second preview in the app.
Can I pick something other than a song?
Yes. Answer or put someone on with a song, a whole album, or the one lyric that says it.
Is my phone number public?
No. You sign in with your number, but it’s never shown to anyone.
When can I get it?
Cosign is coming soon to iPhone. Follow along on Instagram or TikTok for the drop.

Your taste.
Validated.

Get put on by people who get you.

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