There is many ways to see your NEO wallet token balance :
1. You can instal neo wallet. Here is the link : Neo Wallet Download, desktop, web, and mobile wallet available there.
2. You can use telegram bot, Here is the link : Neo Explorer Bot.
There you can see your Neo and Neo-tokens balance on your wallet, see info about current price estimation of neo token that you hold, etc.

For nem, may be you can try this link : Nem Wallet, there is desktop and mobile wallet availabe.
Or shelter dao mobile wallet, Android and iOs avaible : Apple , Android. You can see and manage (send & receive) your mosaic token there.