Based on our record, Raivo OTP should be more popular than Duo mobile. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
And about a free and open-source 2FA app, I think it's Raivo. I haven’t used it personally but I hear a lot about it. It's available on iOS and macOS, so you can check it out if it works for you. Source: about 2 years ago
It’s not Aegis but it’s open source and well regarded in privacy subreddits. https://github.com/raivo-otp/. Source: almost 3 years ago
I use personally use Ravio OTP which can send to the desktop using mac receiver once tapped in the mobile app, you also have better control over backups/exports. Source: almost 3 years ago
Call me lazy but..for phone 2FA auth I'm using Duo in personal mode (TOTP). See guide.duo.com for a start. It's convenient and fast. My Yubikey is used for PC web 2FA and, no, I don't do any financials on mobile devices. Reason I picked Duo is Google Auth on Android had dings for not being secure (some say). BEWARE of Duo, if you try to buy they only sell in packs of 30 so that first bill could be... Source: about 4 years ago
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