This link shows one way to use an api. How I can use an API in MIT App Inventor? - #2 by SteveJG
Possibly do something similar using the sumup-android-api by making GET api calls.
What have you tried?
This link shows one way to use an api. How I can use an API in MIT App Inventor? - #2 by SteveJG
Possibly do something similar using the sumup-android-api by making GET api calls.
What have you tried?