paper

Install command: 
brew install --cask paper

Name: pap.er

Pap.er, 4K 5K HD Wallpaper Application

https://paper.photos/

Cask JSON API: /api/cask/paper.json

Cask code: paper.rb on GitHub

Current version: 5.3.0

Requirements: macOS >= 11

Analytics:

Installs (30 days)
paper 65
Installs (90 days)
paper 144
Installs (365 days)
paper 453