Yes, you can trade cross currency derivative contracts using the Kotak Neo Mobile app.

Kotak Neo offers future contracts for currency pairs such as EURUSD, USDJPY and GBPUSD. 

In the example below, you can see a future contract of EURUSD in the currency segment. The app also provides you with Live Market Snapshot where you can see the day's lows and highs, average traded price, and open interest.