It's totally misleading that Ledger writes on their websites how Nano S is supporting 1100+ coins and app to 6 apps installed on your device, but in reality you can't install more than 2 or 3 apps.
It always depends on the combination of apps. If you have one standalone app like Bitcoin with multiple dependent apps, it should work. The storage capacity of the Nano S is 144 KB.
An example:
Standalone BTC app - 64 KB.
Dependent apps - DOGE, BCH, Dash, Digibyte, Zcash, BTC Gold, etc. are all 2 KB each.
That makes a total of 76 KB with 7 apps installed.
But yeah if you are going to use multiple standalone apps like BTC, ETH, TRON, Stellar, etc., you aren't going to be able to install more than 2, maybe 3 if you are lucky.