The “Move” button is on the main screen of the app:
Tap the “Move” button to move assets between your wallet and your Invest*, Trade, and Margin* accounts: select the account you want to transfer assets from, and the account you are transferring to, specify the currency and amount, and tap “Move”.
If the transfer accounts have different assets, the app will offer you an exchange rate before transferring funds:
*To move Invest and Leverage assets, please use FREE2EX Web.
To move assets within your wallet, please use the Exchange button or tab.