Cost Per Friend

Cost Per Friend is the pricing model for the Gain Friends objective, where you pay for each user who adds your LINE Official Account as a friend.

You run a Gain Friends campaign, and instead of paying per click or impression, you are charged when a user actually adds your account. That makes the friend the billed event, which ties spend directly to the audience you can broadcast to later. You set a bid for what a friend is worth to you, and the auction serves against it.

A cafe runs a Gain Friends campaign offering a welcome coupon on add; it pays its cost-per-friend bid only when a user taps through and adds the Official Account, not for the users who saw the ad and scrolled past.

A friend is not a customer. Buying friends cheaply means nothing if they added you for a one-time coupon and mute or block the account the next week. Track what those friends do after adding, because a low cost per friend with high churn is worse than a higher cost per friend that sticks.

You are buying reach you can message. Make it earn.