No, these emulators achieve JIT via a method intended for remotely debugging apps. AltStore has a way of automating this, but it requires an active server connection when the app is launched.
In AltStore's case, this means you need to be on the same wifi network as the computer running AltServer. I don't know whether it would be theoretically possible to do this over WAN, but it definitely isn't practical at a large scale.
In AltStore's case, this means you need to be on the same wifi network as the computer running AltServer. I don't know whether it would be theoretically possible to do this over WAN, but it definitely isn't practical at a large scale.