For Android
You can use DeployGate with any Android device.
When using distribution pages, each page allows up to 100 devices on the Free plan and up to 10,000 devices on the Flexible/Enterprise plans to easily download the app via distribution page URL.
For iOS
If you’re using iOS devices, usage must comply with the Apple Developer Program rules and remain within those limits.
Under the Apple Developer Program, you can distribute to up to 100 devices, both inside and outside your organization.
Under the Apple Developer Enterprise Program, there is no limit on registered devices, but distribution is restricted to internal use within your organization.