Who does FitSW use as their payment processor? Is there any additional charges? Chris G January 24, 2019 20:20 Follow FitSW uses www.stripe.com for their online payment processing. There are no additional charges, though stripe takes 2.9% + .30 cents for every transaction. Related articles If I purchase an upgraded plan annually (to receive the discount you offer) and I want to upgrade to a plan that includes more clients, will you only charge me the difference of the two plans? After you create workouts, say you change them every 4 weeks, does the previous program stay saved in their file and keep the recorded weights they lift? How To Upgrade Your Account (iOS) Do you allow users to upload their own explanation/demo videos for exercises? If so, is there a different way than YouTube to upload them into the app? How To Set Up Client & Trainer Automated Email Reminders (Computer) Comments 0 comments Please sign in to leave a comment.