Hi,

You can purchase apps from the Odoo App Store and extend them using **Odoo Studio**, but the level of flexibility depends on how your Odoo is hosted. With Studio, you can add new fields, modify views, create custom reports, and automate workflows without touching the app’s code. However, Studio cannot change the underlying logic of the purchased app — it only layers customizations on top. If you are using **Odoo Online (SaaS)**, you won’t have access to the source code, so Studio is your only option for modifications. On the other hand, if you are on **Odoo.sh or on-premise**, you not only get Studio but also full access to the app’s source code, meaning you or a developer can directly edit or extend it with custom modules. This makes SaaS suitable for lighter, no-code tweaks, while Odoo.sh/on-premise gives you full freedom to adapt apps to complex needs.

Hope it helps