As soon as the transaction is detected, the transfer will appear on your Newton dashboard. However, it will not be credited to your account until it hits a certain number of confirmations. Generally speaking, you should see your transaction on the blockchain instantly but accumulating confirmations can vary in duration.
Once it has been confirmed and credited to your account, you'll receive a push notification and will be able to trade that cryptocurrency.
If you're noticing a delay greater than 10 minutes, please contact us through the in-app help chat, or via https://newton.co/support. Then, we can take a look into your cryptocurrency deposit manually.