I have quite a bit of work to rush tonight, going to do a quick post to share what I been research recently. I have a Learning Management System project recently, and I have chosen to build in on LearnDash after doing some research. I build a demo and show it to the client, and I manage to get the project.
Once the project kickstart, one of the new requirement that bugs me is the client wants a mobile app that working with LearnDash. Below are what I research; the choices seem like pretty limited.
Apppresser

Apppresser is the primary services I plan to rely on to build the mobile app for LearnDash site, it seems like having integration with LearnDash by default, the pricing is still acceptable range, but so far the initial testing is a mess.
Wisdmlabs

This company seems like having an in-house solution to integrate the Mobile app with LearnDash, but you need to request a quote, and they build for you. Not a SAAS solution that I want.
BuddyBoss LearnDash

It pretty much covers everything if you check on the landing page. It has features showing videos, and you can try the demo. The price is a bit on the high side, but if it can deliver what it claims, it seems like pretty reasonable compare to other solutions.
Tangible

From the demo looks like a pretty polished product but with it has a high pricing entry point.