Refind incentivizes user referrals by giving coins and offering to buy them back later at a mystery value.
They've since stopped doing this—perhaps it was too complicated.
But, conceptually it's an interesting idea to use variable rewards to encourage referrals.
Right before you create an account, Ahead use three pieces of clever psychology: framing (x2) and compliance.
If the order button is out of view in the checkout, Too Good To Go will show a prompt to scroll.
The Monzo Perks redemption screen has a dynamic design depending on what you're redeeming.
When you start streaming on Twitch, they'll give you a few challenges. These set achievable targets, without you having to lower your own aspirations.
When pre-ordering cinema snacks on Fandango, you can ask to be texted 10 minutes before it's ready to collect.
When verifying your ID, Incode will show a picture of your ID next to your recent selfie, and then merge the two as it completes.