ThirdCatheter 12+

This App is created by the developer who works on Intervention.

I use this conveniently for daily strategy planning.
The app purchase version saves device information and allows you to "search for information online," "evaluate diameter," "evaluate gap contrast," and "check length."
You will need to enter device information, but you can also share it with friends via AirDrop. Information can also be edited using the CatheterEditor app for Mac.

I would be happy if this app would be useful to people involved in Intervention.
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Providing Apps requires an annual fee to Apple. Please understand.

This App calculate the required minimum diameter of a circle inscribing three circles circumscribing each other based on Soddy circles and intuitively displays the relative size of the circle. You can calculate the theoretical minimum diameter of the guiding catheter when using three devices.Please note that the space required for the device to function is not considered.

Medical disclaimer.
This app should never serve as the sole source of information. Users should refer to the device manual and use it appropriately. This app in no way replaces individual clinical judgment. Users remain responsible for their actions. Side effects of therapeutics and their management are not within the remit of this application.
None of the content constitutes medical advice. For medical advice, please consult a medical doctor or other professional health care provider.

Size correspondence
1 in = 25.4 mm
1 mm = 3 Fr