How do two players share one phone as a chess clock?

Lay the phone flat between the players next to the board. The screen splits into two halves, each rotated toward its player, and each player taps their own half after completing a move on the real board.

What is the best time control for a casual game with a friend?

5+0 blitz is the most popular casual control: fast enough to stay exciting, long enough to think a little. For a calmer game try 10+0 rapid; for maximum adrenaline, 3+0. If one player is clearly stronger, give the weaker player extra time.

Which hand should I press the chess clock with?

The same hand you moved the piece with. This is the standard rule in tournament chess and worth keeping even in casual games — it keeps the clock press honest and prevents accidental early presses.

Do we need internet to use a phone chess timer?

No. Chess Clock works entirely offline — airplane mode is actually recommended so calls and notifications never interrupt the game.

Play chess with a friend: one phone, one board

The best way to play chess with a friend is a real board with your phone as the shared clock: open a two player chess timer like Chess Clock, lay the phone flat beside the board, and each player taps their own half after moving. The split screen rotates each side toward its player, and setup takes about ten seconds — faster than creating an online game.

A real board beats two people staring at a screen

When two friends are in the same room, playing chess on a shared screen — or worse, on two separate phones over the internet — throws away everything that makes over-the-board chess fun. Real pieces, eye contact, trash talk, the satisfying thunk of a capture: none of it survives a touchscreen board.

The phone has exactly one job in this setup, and it does it brilliantly: it is the clock. A physical board plus a phone timer gives you the full over-the-board experience with none of the cost or bulk of a dedicated chess clock.

Setup in ten seconds

The whole routine:

Set up the board as usual.
Open Chess Clock and pick a preset — 5+0 blitz is the classic casual choice; 3+0 if you want fireworks; 10+0 rapid for a more thoughtful game.
Lay the phone flat beside the board, roughly at the halfway line. Each half of the screen rotates independently, so both players read their own time right-side up.
Consider airplane mode so a notification never lands mid-game — the app can remind you.
Black traditionally starts White's clock, and you're playing.

The screen stays awake for the whole game, and when it ends you get a small record of the game: moves made, time used, and average time per move for each player.

Clock etiquette, even between friends

A couple of habits keep timed games friendly and fair, and they are the same rules used in tournaments:

Same hand rule: press the clock with the hand that moved the piece. It prevents the (surprisingly tempting) two-handed move-and-slap, and it is the single most important clock habit to build.
Move first, then press. Your clock runs until your move is complete and you have tapped. Hovering a finger over the clock while thinking is bad form.
Don't slam. A phone makes this easy — a light tap registers instantly.
A flag is a flag. Decide up front that time forfeits count. Blitz without consequences is just slow chess with extra steps.

Fair time controls when one player is stronger

Friends are rarely evenly matched, and nothing kills a chess night faster than one player winning every game. Time odds are the classic fix, used in casual chess for well over a century:

Simple odds: the stronger player gets 3 minutes, the weaker gets 5 — or 2 versus 5 for a big gap.
Increment odds: both get 3 minutes, but only the weaker player gets a +2 increment.
Adjust between games: if someone wins two in a row, shave 30 seconds off their clock. You'll converge on genuinely tense games remarkably fast.

Chess Clock supports a different time control for each player, so odds games are a first-class feature rather than a workaround — see our time-odds handicap guide for recommended splits by rating gap.

Blitz nights, family games, and teaching kids

A clock transforms casual chess. Untimed games between friends tend to sprawl — someone thinks for six minutes, someone else checks their messages. Put 5 minutes on each side and the same game becomes urgent, funny, and repeatable: a best-of-five blitz match fits in half an hour.

With kids, the clock is unexpectedly useful in the other direction. A gentle control like 10 minutes with a 5-second increment teaches pacing without pressure, and children love the ritual of pressing the clock — it makes the game feel official. It also quietly solves the eternal problem of a young player drifting off mid-game: a visibly ticking clock keeps attention on the board better than any reminder. For a silly, chaotic family variant, try hourglass mode, where every second you think is added to your opponent's clock. And when the adults want a real fight, 3+2 blitz is the sweet spot: fast enough to thrill, with enough increment that games are decided by moves rather than by frantic flailing.

Turn your iPhone into a real chess clock

Chess Clock gives you every time control from Bullet to FIDE Classical — beautiful, precise, and completely private.

Coming soon to the App Store