ERC20 tokens (including CCX) can be stored on all platforms and the payment processors which support them. However, we recommend storing CCX tokens as well as the other cryptocurrencies always in places and wallets in which you have full control over the private keys and with the possibility of making a backup. It is worth considering MetaMask (application on Google Chrome) or ImToken (mobile app). You should always make a backup copy of the wallets, and if you store more resources you should diversify their storage. CCX Token is also compatible with devices such as Ledger Nano S.