Discord will let you view and interact with what your profile could look like, if you upgraded to their paid plan.
This is the Endowment Effect, because they're hoping the user sees their account with a new theme, and then starts to feel like it shows off their personality / profile better.
Hopper is a price tracking app for flights and hotels, and it frames the value of a booking by showing a timeline of the predicted prices over time.
When rating a book 5 stars, you'll see a celebration burst onto screen.
If you attempt to use a blocked app, OneSec offers a variety of novel interventions, like opening the front camera so you have to stare at yourself breaking your own rules.
After ordering a food delivery, you can easily create an event in your calendar with all of your slot information and booking reference.
Octopus Energy will let you earn Octopoints for completing habit-forming actions (like submitting meter readings), which you can then redeem for credit.
Loom will let you easily swap the default selection of emojis for your most frequently used ones.