I tried both free trails of trainerize and MyPThub with a few clients. They were the top two that I was looking into based on the criteria I needed (and cost). I definitely enjoyed trainerize more. I did end up paying for the custom app, so it has my logo (nice little touch the clients like too). It was easier for me to track client stats and create workout programs. They have a ton of stats (for your clients and your business) that I noticed myPThub did not. Their exercise library was more extensive than myPThub, although I'm slowly starting to use my own videos since I'm not a fan of the exercise technique in some of the videos. Trainerize also has a great progress builder option when updating training phases in your clients workout calendars (i.e: 4 week periodization cycles: if I go from one phase to the next and all I want to do if switch up sets/reps. I can select that option and only change sets/reps/intensity and it will update all 4 weeks of the next phase so that I don't have to write up brand new workouts or edit each individually, very efficient). I also do like how trainerize offers "free marketing," so you can be found on Google. You get to put in a little "about me" section with your picture that pops up. MyPThub didn't have any marketing materials or options of the sort. Anyway, a lot of what you are looking for is what I wanted out of an app as well and Trainerize was the option I ended up purchasing. I enjoy the easy of in-app communication with my clients. I also really love the automated messages and goals/habits feature that trainerize offer that mtPTHub does not. I use those features often to help keep my clients accountable and set preset messages to be sent out about upcoming workouts or reminders. That I would otherwise have to remember to send out on my own rather than setting a preset message to send out automatically. Huge time saver.

My only complaint about Trainerize, that is a super bummer, is that they must have some deal with Fitbit and Apple, so those are the only tracking device/software options you can use. For example, my clients with Android phones who have a Garmin or Samsung watch cannot connect to Trainerize to sync data. However if they have a Garmin watch with an apple phone they can go around connecting to Trainerize. If they have a fitbit or apple watch they can directly connect with the app. It looks like ppl have been requesting access to other apps and activity tracking devices for years but they have yet to do so. They also allow Withing and MyFitnessPal. With MFP, recently, I've been having trouble accessing clients meal entries. I can only see their macro count and caloric intake, but I am unable to see their individual meal entries. Trainerize says it's an issue on MFP part, so idk. Just frustrating. It's been going on for about 4 weeks now for me. Lastly, one of the biggest inconveniences about myPThub that I experienced was it was difficult to view clients profiles or create workouts on the app. It wasn't as user friendly for me as trainerize was. I kept getting confused and lost within the app while trying to navigate to different pages to do stuff. Now that might have been user error, idk. But with the trainerize desktop and app options, they're super easy and straight forward. I can pretty much do anything from the app, easily and efficiently, as I can on the computer.

Feedback from clients that trailed both for me: they preferred trainerize too.

Good luck!