Play · Train · Watch
Every move you play,
read back to you.
Tactics, positional judgement, endgame technique and coached play, with the engine running on the device. Nothing leaves the phone.
See it in motion
The fastest way to get better at chess? Know why every move worked. Brass Pawn tells you — every move, every game.
Every screen

Every move you play,
read back to you.
It does not just say
you lost.
What each move is worth.
Before you play it.
Nine hundred games
worth watching.
Two engines.
A second opinion.
And when you get it right,
it says so.
Five of everything,
free.
- 14,351Tactics
- 900Watch
- 1,624Guess the Elo
- 116Positional
- 15Endgames
Coaching grades each of your moves as you make it.
Play on from here · Read a board from a photo
A real opponent over Game Center, on the clock. No hints, no engine, no take-backs.
No adverts, in any part of the app, ever
The app collects nothing, sends nothing and makes no network requests. Your ratings and history are stored only on this device, and deleting the app deletes them.
What it costs
Five of everything, free.
Free every day
0
Playing stays free — against the engine and against people, with no limit and no adverts. What Pro unlocks is the training.
The allowance resets every day at 9:00 AM local time. Playing — against the engine or against a person — has no limit and needs nothing.
Brass Pawn Pro · Monthly
$3.99
- Every one of the 14,351 puzzles, as many a day as you want
- Rush runs without a daily limit
- Positional judgement, endgame drills and Guess the Elo, unlimited
One-off unlock
$49.99
The monthly plan renews each month until you cancel it. Cancel any time in Settings › Apple Account › Subscriptions, at least a day before it renews. The one-off unlock is a single payment and never renews.
Prices shown are US App Store prices. Your local price is set by the App Store.
Questions
- Does it need an internet connection?
- The app collects nothing, sends nothing and makes no network requests. Your ratings and history are stored only on this device, and deleting the app deletes them.
- What is free?
- Playing stays free — against the engine and against people, with no limit and no adverts. What Pro unlocks is the training. The allowance resets every day at 9:00 AM local time. Playing — against the engine or against a person — has no limit and needs nothing.
- How does the subscription work?
- The monthly plan renews each month until you cancel it. Cancel any time in Settings › Apple Account › Subscriptions, at least a day before it renews. The one-off unlock is a single payment and never renews.
- Can I see the source code?
- This application is free software, licensed under the GNU General Public License version 3 or later. It includes Stockfish, which is GPLv3. Because Stockfish is linked into the app, the whole application carries the same licence — and its complete source is published.
Licence
This application is free software, licensed under the GNU General Public License version 3 or later.
It includes Stockfish, which is GPLv3. Because Stockfish is linked into the app, the whole application carries the same licence — and its complete source is published.
It also includes Reckless, a second engine, which is AGPLv3. The two licences combine, and the Affero clause about software used over a network changes nothing here: both engines run on this device and the app makes no network requests.