ninZa.co's indicators do not depend on the type of NinjaTrader edition. You can use our indicators with any edition of NinjaTrader: Demo/Simulation, Free/Direct, Lease/Subscription, Own/Lifetime.
The only exception is that ninZa.co's order-execution tools (EOB Ordering, Innovative Ordering, Smart Flattening) do NOT work on Free/Direct version of NinjaTrader.