Home › How it works

Five things people open the clock for.

Hi, I'm Lucas. I built the social chess clock: it saves the game (who played, who won, how the rating moved) and finds you the next one. Here is what each piece does, in the order you'll meet it.

Time a game: A chess clock with friends built in.

Bullet to classical. Custom time controls, fully offline. Invite the player across from you and the game logs itself.

More on the chess clock

Log the result: Every game logged. Every rivalry too.

Wins, losses, draws, all logged in a tap. Your history grows with every game, and every opponent builds a head-to-head record.

Find a place to play: A board near you, wherever you land.

4,600+ mapped venues across 100+ countries. Cafes, clubs, parks, and the bars where people actually play.

Browse the venue map

Find people to play with: See who's down to play near you.

A live map of players up for a game in your city. Filter by rating to find your level, message them, and agree on a time and a board in a few taps.

The honest version, from me: this works best where there is already density, which today means Munich and Berlin. Everywhere else it is still growing, and adding venues and players is how it gets there.

Play your friends: The rivalry keeps score for you.

Add friends, keep a head-to-head record with each of them, and every game you log builds that history. The rivalries are the part people get hooked on.

A number for the games you actually play.

It uses Glicko-1, the same family of math that chess.com and Lichess run on, applied to your over-the-board games. Beat a stronger player and it moves more. It is a separate, offline rating, and it has nothing to do with your online number.

A social network where every game happens at a real board.

Profiles, friends, messages, clubs, and one shared history of games. All of it exists to get two people to the same table.

Questions

Is this online chess, or real-board chess?

Real-board. Checkmate IRL is built for over-the-board games you play in person. There is no online play inside it. Your phone is the clock and the scorebook, and the chess happens on the table in front of you.

How do I get started?

Download from the App Store or Google Play, set up a profile in a minute, and log your next over-the-board game. That is it.

Is it free?

Yes. The chess clock and game tracking are free, and you can browse the worldwide venue map without even making an account.

Do I need internet for the chess clock?

No. The clock works fully offline. Your games and rating sync once you are back online.

How does the rating work?

It uses Glicko-1, the same family of math that chess.com and Lichess run on, applied to your over-the-board games. Beat a stronger player and it moves more. It is a separate, offline rating, and it has nothing to do with your online number.

How do I find players near me?

The app shows players and venues in your city on a map. The honest version: this works best where there is already density, which today means Munich and Berlin. Everywhere else it is still growing, and adding venues and players is how it gets there. You can browse the venue map at checkmateirl.com/venues anywhere in the world.

Can I play with friends?

Yes. Add friends, keep a head-to-head record with each of them, and every game you log builds that history. The rivalries are the part people get hooked on.

Is there an Android version?

Yes. Checkmate IRL is on both the App Store and Google Play.

Can I host my own chess night?

Yes. You can set up an event, invite players, run the pairings, and keep live standings from your phone. The For Organizers page walks through the whole setup.

Can I run my chess club on Checkmate IRL?

Yes. Create a club in the app, share its link, and every game members log together builds the club leaderboard automatically. See the For Organizers page for the full setup walkthrough.

How do tournaments work?

Two formats. Swiss tournaments pair players automatically every round, rotate byes fairly, and keep live standings. Casual events are open play: challenge anyone in the event and play as many games as you like. Results count toward your offline rating either way.

How do I add a venue that's missing?

On the venue map, tap "Add a Chess Spot." It takes about 30 seconds and needs no account. You can also upvote, comment on, and report venues to keep the map accurate.

What about my data?

Your games and your rating are yours, and I do not sell your data. See the privacy policy for the specifics.

Who built this, and how do I reach you?

One person: me, Lucas. The best way to reach me is [email protected]. I read everything.

It's just me building this

Lucas Schaubel, Founder, designer, support.

I learned chess from my dad as a kid, and I've always preferred playing in person. Whenever we meet, we sit down and play. For years we wrote the results in our phone notes, and we kept losing them.

So I built a chess clock that saves the game. I put it on TikTok, and the reply I kept getting was "I have no one to play with." That is how the rest grew, finding players and places to play near you.

Checkmate IRL is a one-person project. I design it, build it, map the venues, and answer the emails. It moves fast in some places and is rough in others, and your feedback reaches the person who can actually change something. If anything is broken or missing, tell me. [email protected]

Download on the App Store · Get it on Google Play

For Organizers · Social Chess Clubs · Blog