The Newbie

Free
0% Block.io Fees
Custom Network Fees
Developer API Access
Testnets Only
Uses Public Infrastructure
Notifications: WebSockets
10 Addresses per Network
5,000 API Requests/Day

The Viking

$0.00/mo.
1% Block.io Fees
Custom Network Fees
Developer API Access
Including Mainnets
API Data for Account Only
Notifications: WebHooks
Unlimited Wallet Addresses
150,000 API Requests/Day