Ok so I actually looked into it and it doesn't need an app but it'd still be a big risk to do
My parents have been very vocal that they do not want me on Discord specifically, and because they go through my phone it's a risk
They know my Imgflip account exists so if they saw sumn like my password for it being saved they wouldn't bat an eye, but if they saw any trace of me having a Discord account they might lose their shit
Even then when they have caught me using Imgflip they don't really get that mad, but like I said they would be MAD if they found me on Discord, like if they caught me on imgflip again I might lose my phone for like 2 weeks at worst, but if they catch me on Discord I ain't touching a device until Christmas at the very least