If you are already here you know what is ledger nano s. if you don’t, Click above image or visit https://www.ledgerwallet.com/ to see their products.
LTC uses the same app as BTC. This App can be used for BTC, LTC and many other AltCoins.
All hardware wallets Apps are Chrome browser apps. Chrome browser is must.
All Apps can be found here: (you would need this link next)
https://www.ledgerwallet.com/apps/
You would alos need to have Ledger manger app, this would help you install/remove different currency wallets on Ledger Nano S.
After installing Manager you will need to download wallet app.