Please see below for details on the Digital Photo Professional Express app for iPad:
 
Description

Canon Digital Photo Professional Express (Canon DPP Express) is an app for processing RAW images (.CR3) taken with Canon cameras.

[Key Features]
- Adjust RAW images freely.
- Quickly and easily adjust RAW images anywhere, any time.
- Save multiple adjustment patterns and compare the results on a single RAW image.
- Use the change history function to readjust images until you achieve the perfect result.
- Save adjusted images to your Camera Roll in JPEG format.

[Compatible Formats]
CR3, JPEG
* Not compatible with .CR2, .CRW or video file formats.

[Image Input]
Via Camera Connect (CR3, JPEG)
From your Camera Roll (JPEG)
* Image data is saved in the app.

[Compatible Camera Models]
EOS R, EOS M50

[Compatible Devices]
iPad Pro / iPad Air 2 / iPad (5th generation or newer) / iPad mini 4
* iPads with 2 GB of RAM or more, and iOS 11.

[System requirement]
iOS 11.4

[Important Notes]
- If you uninstall the app, all image data imported from your camera will be erased.
- If application does not operate properly, try again after shutting down the application.
- Visit your local Canon Web pages for more details.