matm

You don't see Heap on there?

Good point. In terms of network performance, we try to batch events and minimize server requests.

For link tracking, our method is similar to how other analytics products track link clicks - we delay the page navigation the min of: 1) 250ms, 2) the time it takes for our server to respond to a click event.

Our bottom tier (which includes a 1 month free trial) lets you track 2,500 users/month.

That said, pricing is really hard to get right. There's basically zero chance we nailed it on the first try.

It's essentially imperceptible. We measured it, and our client-side script introduces a 0.1% CPU overhead.