At Katalyse, we strongly encourage you to use myetherwallet.com to hold ethers, KAT tokens (FYN tokens) & project tokens. Myetherwallet allows you to create a wallet that can be downloaded onto your computer and imported into mobile wallets which you are using, e.g. imtoken, jaxx etc.
You can access Myetherwallet by clicking on the wallet link once you are signed in.
For instructions on creating a wallet, please refer to the official myetherwallet documentation at
Tutorial video on Youtube.