I used a free Windows app from 2015 to 2020 that only displayed key & mouse click totals, but then I found WhatPulse with its charted tracking, heatmap, etc... I've now been using WhatPulse since 2020 (Premium Subscription), and am very pleased. It's also good to know that they'll be around (subscription-based products tend to be supported long-term, versus free/other licensing models).