This post was referring to a Price API. Using a Tor2Web service, yes -- you can access that Clearnet URL from a browser on any device.
But if you are referring to the RoboSats service, it requires a browser that works on Tor.
For IOS the Tor Project website has the recommendation to run "Onion Browser" on IOS:
Can I run Tor Browser on an iOS device? https://support.torproject.org/tormobile/tormobile-3/