I did this at my current employer (NZ govt uses shitty third party services which really want to invade your privacy). Basically, nope, I'm not installing this

I did this at my current employer (NZ govt uses shitty third party services which really want to invade your privacy). Basically, nope, I'm not installing this closed source third party app (whose only job is to issue MFA tokens for access to the intranet) onto my personal phone. If you want me to install it, give me a separate phone. After a lot of finagling I finally learned this was just TOTP, and there was a way to get my TOTP seed so I could use any old TOTP client. No indication of this while talking to support or looking at the registration website, of course.