Next to the regular Homey, there is also a more powerful version: Homey Pro. Homey Pro is a more powerful version of Homey.
Homey's mission is to connect all devices in your home. To achieve this goal, Homey runs apps, which add support for certain brands.
Homey can run between 15 and 20 apps. If you install more, the experience might become slow or unresponsive.
Homey Pro can run at least twice that amount, so over 40 apps, depending on the kind of apps you're using, thanks to its more powerful hardware.
An exact number is hard to determine, as every app has their own memory demands. For example, a simple app for Z-Wave devices uses less memory than a full-suite home security app.
If you are planning on using more than 15 brands of devices in your smart home, we recommend buying Homey Pro.
Apps use a certain amount of memory, usually between 10 MB and 30 MB. Homey Pro has 1 GB of memory available, twice the amount of Homey, which has 512 MB.
Not all of Homey's memory is available for apps, because other memory goes to the operating system, Flows, Insights etc. This is, however, a static amount usually not more than 250 MB.