Good for the "old" charts
Uses the SF charts.
Yes, Jujitsu is completely free and it doesn't have any in-app purchases or subscriptions.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
Jujitsu is free.
To get estimated revenue of Jujitsu app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.
Uses the SF charts.