Stone Chart
Chart every rock. Keep every shot.
Curling shot charting, scoring, and stats for coaches and players — on iOS, Android, and the web. Offline-first at the rink, cloud-synced everywhere.
App Store Soon Coming to
Google Play
Launching for the coming season. In beta now.
Built by curlers, for the sheet
Charting that matches how the game is actually played — and stats that match how they're actually reported.
Chart the call, not just the result
Your first tap sets where the shot was called; tap again and only the finish moves, leaving your aim behind as a ghost stone. Aim versus outcome, on every rock.
A sheet that behaves
Real dimensions and callout zones. Bump a stone or take one out and the house updates — two rocks can never sit on the same ice. The next shot starts from what's actually there.
Stats done properly
The official USA Curling 0–5 scale, accumulated points over possible — never averages of averages. Throw-throughs excluded, draws and hits split, and modifiers recording what made each call hard.
Hammer you never track
Say who has it in the first end and the app derives the rest — blanks retain it, a scoring end hands it over. Plus force, steal and blank efficiency on every dashboard.
On-ice tools for tonight's ice
A split timer that builds a per-zone hog-to-hog time bible, a draw-distance tracker with proper DSC (drop the worst, or worst two), and an ice-notes journal by venue and sheet.
Offline-first, then everywhere
Nothing depends on the rink's signal at the moment you tap. Sync when you're back, review on the web, and send your team a read-only link to the whole game.
Want the detail? The help & guide covers every feature and what each stat means.
Simple pricing
Start free. Upgrade when you're ready to sync and share it all.
Demo
Try it for real
- Chart locally for 6 months or 5 games
- Full scoring, stats, and replay
- Share one game with a link
- Keep reading your games forever
Premium
For individuals
- Unlimited charting
- Cloud sync across your devices
- Web review dashboard
- Unlimited share links
- Share stats with linked teammates
$23.99 / year — two months free.
Club
Seats for your members
- 10 seats — $99/year
- 25 seats — $199/year
- Unlimited seats — $399/year
- Every seat unlocks full premium
Managed on stonechart.app.
Pricing is set during beta and may change before launch.
Questions
The short answers. More at launch.
What is Stone Chart?
A curling performance app for coaches and players: chart every shot, keep score, and see your stats — on iOS, Android, and the web. It's built to be cross-platform and reliable at the rink, where single-platform tools aren't.
Does it work without internet at the rink?
Yes. Stone Chart is offline-first: charting happens on your device against a local database, so a dropped signal never loses a shot. When you're back online, your games sync automatically.
What platforms is it on?
One app across iPhone, iPad, and Android for charting, plus a web dashboard at app.stonechart.app for reviewing your games, stats, and replays on any browser.
Is there a free version?
Yes — a free demo lets you chart locally for 6 months or 5 games, whichever comes first. After that you keep read access to everything you've charted forever; charting new games moves to a subscription. Nothing is ever deleted.
Can I share a game with my team?
Yes. Publish a game as a read-only link and anyone can open it in their browser — no account needed — to see the scoreboard, shot chart, replay, and stats. Free users can share one game; premium users can share any game.
What does a subscription include?
Unlimited charting, cloud sync across your devices, the web review dashboard, and unlimited share links. One subscription unlocks premium on every platform you use.
How much does it cost?
Individual: $3.99/month or $23.99/year. Clubs can buy seats for their members — 10 seats for $99/year, 25 for $199/year, or unlimited for $399/year. Pricing is set during beta and may change before launch.
Do I need an account?
No — the demo charts locally with no account at all. You only need an account to use what premium adds: syncing across devices and the web dashboard.
Can my whole team see their own stats?
Premium members can link accounts so that games flow to the teammates in them: a linked player sees the games they're in — and their season stats from those games — read-only in their own app and on the web.
How is this different from Curl Coach 2?
Stone Chart is cross-platform (iOS, Android, and web from one account), cloud-synced, and offline-first. You're not locked to a single device or platform, and your data is reviewable anywhere.
Reviewing already?
Open the web dashboard to browse the games your devices have uploaded.
Open the web app