Nano X is a very safe way of keeping your crypto out of exchanges. The device can have up to 100 apps installed with the help of mobile/desktop ledger live app. You must have patience to operate it because, having only 2 buttons means it will be slow to enter passwords or confirm various operations. Gave it 4 stars because there are some major coins missing from the ledger live supported apps (you can install XLM app on the device for example but it is not officially supported so it's a bit difficult to send the coins to the device).