I downloaded the app.. and picked the OCI card option ( I am US cititzen). It takes you to the same form as on the website.. do I need to open an account with Su-Swagatam to see the arrival card in my account?

Just take a screenshot of the final page with the QR code and save it. No need to worry about printing it out.

For extra caution, if you are worried about your phone dying at an inconvenient time, just ensure it's saved in a cloud-backed up location so you can still get to it via a different device if needed.

Any update?
 

Just curious if anyone who’s flown in the last week can give an update on the e-arrival card. Are physical cards really eliminated, are you asked about them at check in, what happens if you don’t have it filled out and have no phone or service or WiFi at arrival, etc?

Airlines no longer hand out the forms inflight. Checkin/gate agents don't really ask about it. When you land in e.g. DEL there are large signs where the desks with the forms used to be asking you to go to the provided wifi and scan the QR code to ill the form online.

I was in DEL a few weeks ago and filled out the e-arrival card online using the app. The officer asked about the arrival card, but I told him that I filled it out online and he shook his head and let me through without even showing it. I'm an OCI and didn't realize I was exempt until reading this thread. It looks like the immigration officers are also confused about the new rules as well.

OCIs are NOT exempt from the e-arrival card. All non-Indian citizens need to fill it out. Once it is filled out online it is linked to your passport number so once they scan that they know you filled it out.