I found a project offering an airdrop but required participants to download and install their mobile app. The app is newly made with only few hundreds download and I don't think I'll ever use it.
Is it too risky?
certainly risky, so you should try to research it and find out
but in my experience, there are many airdrops that do the same method, not all of them are bad there are some good ones. well so you have to research it