Can I download an app from the French App Store in the US?

I am a US resident but I do own a home in France. I need to download an app to be able to control my radiators (smart home) but that app is only available through the French App Store. Most my apps and subscriptions are through the US App Store so I am il unable to change regions because it would force me to cancel my US subscriptions. Is there a way I can still download that app from the French App Store?

[Re-Titled by Moderator]