There is an IOS app but from Nick or On One software but the last time I looked it was $24.95. Plus you need to connect the camera to a WiFi enabled computer. So it is like shooting tethered with the ability to control your camera remotely. Being that I am a street and landscape photog I never saw the value.
2/07/2023: New product announcements!EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM