Cliffhanger + Social Proof
Instagram will occasionally show featured posts from Threads. These then dynamically show which of your friends use the Threads app.
This is a piece of clickbait, followed up with some well timed (and very specific) social proof.
Jam-packed with psychology
Right before you create an account, Ahead use three pieces of clever psychology: framing (x2) and compliance.
When the CTA is hidden...
If the order button is out of view in the checkout, Too Good To Go will show a prompt to scroll.
Custom designed perks
The Monzo Perks redemption screen has a dynamic design depending on what you're redeeming.
Starter challenges on Twitch
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.
Popcorn alerts
When pre-ordering cinema snacks on Fandango, you can ask to be texted 10 minutes before it's ready to collect.
You look like your passport
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.