A Developer License is required for every developer using Spread.Services. Includes 1 Development License with 1 year Maintenance, and 1 Distribution License.

Spread.Services Distribution License
A Distribution License is required for each server hostname or named mobile/desktop application. A Distribution License is required for all deployed applications and is paid annually. Note - This is in addition to the Developer Licenses (you must own at least one Developer License). Perpetual Distribution Licenses are also available.