Arena-Tracker VS HSTracker

It's been rendered by Arena Tracker the same way you would see it in game.

I've used Arena Tracker which shows the hsreplay deck win rates and heartharena scores during draft. You can turn off the heartharena scores.

Patrons (3€/month) will be able to unlock the premium version from the app which implements some extra features: (more stats, replays, planning, graveyard, popular lists, synergies and draft mechanics/drops overview). Get it becoming a patreon

There is a software that overlays the card winrates. https://github.com/supertriodo/Arena-Tracker/blob/master/Readme/More.md.

You can use Arena Tracker. It shows HSReplay winrates and Heartharena tier scores on screen.

You can get it from the github.

Try to run the previous version just to be sure is not related to a new bug that was introduced in the last one.

Patrons (3€/month) will be able to unlock the premium version from the app which implements some extra features: (more stats, replays, planning, graveyard, popular lists, synergies and draft mechanics/drops overview). Get it becoming a patreon

If you want a deck tracker that works native on Linux, try Arena Tracker

I think HSReplay has something for Mac: https://github.com/HearthSim/HSTracker

Something like HSTracker grabs control of the process and fiddles with its memory directly (at least I'm pretty sure that's how it works), and it's open-source on GitHub (https://github.com/HearthSim/HSTracker), so maybe that could be a good starting point. I know that can read what's happening, but I don't know if you'd be able to play cards the same way --- it would definetly be worth looking into. At the very least, you need something like that for accurately reading the game state, as I feel dealing with screen captures (which is the only viable alternative) would be extremely painful.