Tradingview is a charting platform. Many feature can be used if you sign up for a free account.
The free account has some limitations and will show popups. However you can use it to backtest your strategies on the daily, weekly and monthly time frame.
If you want to be able to backtest on the lower time frames then you can consider to upgrade your account to a Premium plan.
Why should you get a Premium plan?
– Fastest data flow
– 25 indicators per chart
– 8 charts in one layout
– 400 server-side alerts
– Second-based intervals
– Publishing invite-only indicators