Thanks for asking! Still in the process of testing one of the non-Vbox apps, and all associated backend daemons (work generation, result validation, etc). Has been taking much more time than initially anticipated since I've been extremely busy lately with non-Kryptos-related stuff.
The app itself has already been implemented for a while - since then, I've been refining associated aspects, including credit assignment, etc.
In the meantime, I've also started working on another non-Vbox Kryptos app, and a Covid app (obviously, non-Kryptos, but I'll start it under the Kryptos server, whenever the app is ready for beta testing; don't think it'd be very soon though, if I keep being snowed under with day-job work).