The different image sizes are used for:
App Store: logo.png
iPad Pro - App Icon: logo_167.png
iPad, iPad Mini - App Icon: logo_152.png
iPad (all) - Spotlight: logo_80.png
iPad (all) - Settings: logo_58.png
iPad (all) - Notifications: logo_40.png
Color Codes:
Coin:
Main: #ae841a
Edges: #daa520 (goldenrod)
Background flow:
From: #a9003c
To: #2f0011
The logo.svg file is a vectorized version of the coin without the background.