Trading though the CLEO platform when taking a prop firm challenge on HyroTrader or another prop firm is free. It does not require a subscription or account creation on the cleo.finance website. This applies to the desktop platform and the Mobile App. In fact you can even get HyroTrader challenges with a 5% discount with code “CLEO.”
The paid tiers described on the cleo.finance pricing page apply only for Manual and Automated Backtesting or trading a Binance account via API.