Login to your Binance account and click Account on top right
Then click the API Setting at the Bottom of the page
Now, label your API key with any label you'd like to (we recommend to use a separate API key for each service you use and label them accordingly).
After clicking Create New Key you will see a screen with QR code, your API Key and API Secret. Like below
Now go to Coin Stats app Altfolio tab, scroll far to the right and click Add new portfolio by Selecting Exchange (API KEYS).
Click QR and scan the QR code presented by Binance or copy/past your KEY and Secret Manually.
After clicking Add you will see your Binance portfolio synced with the Coin Stats app.