# Gondola Agents
Based on your subscription, you'll have number of agents you can able to use. This will affect the amount of concurrent tests you can run. If you have 3 agents, you can run 3 tests concurrently. To purchase more agents contact Gondola Support or use the Pricing page.
Mobile Agents can only be used for testing mobile applications (Android/iOS).
Web agents can only be used to test web applications (using desktop and/or mobile browsers)
Enterprise agents can be used on web and mobile applications. 2 free Enterprise agents are included for each business.