Know your odds before the fight
Win chance, hp at risk and your likely finish, on screen while you can still move a minion.
0a7972e3eb3f0f83fdf92b94e55f8bd61da7b69e28162dd376097407b18e47fdSee the fight before it starts
Your board is played against the boards other players fielded on this turn, many times over, and the panel shows how often you win, tie or lose. Move a minion and the number moves with it.
Checked on 253 real fights from 22 games: in every 20-point band, the real win rate was within 6.3 points of the promised one.
Know what a loss will cost
If the fight goes wrong, the panel shows the usual damage and how bad it can get. When the worst case reaches your health, it says Lethal.
Checked on 97 lost fights: the usual loss was off by 1.9 hp on average, the worst case covered 96% of them, and all 11 lethal losses were marked Lethal.
Track where your game is heading
A model trained on real games reads how your game has gone so far — health lost per fight, fights won, your spot in the lobby — and estimates your final place. It updates every turn.
Checked on 125 games: on average 1.5 places from the final place, against 2.1 for the lobby standings at the same moment.
Your games help the numbers
Sent after each game
- The Battlegrounds game log, with every name and account ID removed on your computer
- App version and game build
- Whether the panel was on screen
Never collected
- Your BattleTag and other players' names
- Your account ID and rating
- Games from other modes
- Your IP address: we don't store it
To stop, turn off Send anonymized games in the Tavern Seer window. Games not sent yet are deleted at once. Sent games are kept for 5 months, then deleted; they can't be removed earlier on request: nothing in them points to you.
Questions
Is my account safe?
The app only reads the log file that Hearthstone writes on your computer — the same file Hearthstone Deck Tracker and Firestone read. It doesn't read the game's memory, doesn't press anything for you and doesn't change the game. You make every move yourself.
How do I install it?
Download the installer, accept the terms and allow one administrator prompt: the app raises the game’s log size limit in a file inside the game folder. Restart Hearthstone once. Step by step — on the installation page. Installation
How accurate are the numbers?
Each number is checked against what really happened before it goes on the panel. On 253 real fights the win chance matched the real win rate within 6.3 points in every band; the usual hp loss was off by 1.9 hp on average. These are games of one player, so the beta collects games from other ratings to check the numbers there.