Does Skie report app usage or screen time?
Not yet. Skie does not report screen time, unlocks or minutes spent in each app, and Insights does not show them. What it measures today is device health: compliance, policy and app versions, online and silent share, battery and open events. Usage reporting is something the team is working on, with no date to give.
It is a fair question, because schools and companies often assume a device manager can say how long a tablet was used. Skie is honest on this point. Usage and screen time are not measured, and nothing in Insights should be read as a stand-in for them.
What you do get is control over when and what. Schedules switch the allowed apps by day and time, so you decide that a tablet runs only study apps in a study block and only a short list at night. Hostel night mode can keep calls available. The allowed app list and the blocking of everything else mean the device only does what you set. That is a rule-based approach rather than a usage-report approach.
What Insights measures is whether the fleet is in order: readiness, fully compliant devices, average compliance, devices on the latest policy and app, online and silent share, low battery, open events per device and policy reach. These are figures a device can report reliably, so Skie reports them and no more.
Per-app time limits and daily screen time limits are also not available yet. If you need to limit total use today, use schedules and the app list to shrink what is available at the times you care about.
Skie does not read private messages or call logs, and there is no hidden mode, so a usage feature would be designed around that. If usage reporting matters for your decision, say so when you speak with the team. The wider choices are covered in how to choose an MDM.