Comparison

Rummi Timer vs Chess Clock

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Rummi Timer

Features
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This app is designed for players of the tile rummy game (also known as Israeli Mahjong or Number Mahjong). Whether you’re playing with friends or family, it helps keep every session fair, fast, and fun — no more paper, no more delays! Features • Countdown Timer – keep turns fair and avoid slow play • Score Tracker – automatically adds up players’ points • Rotating Display – place your phone in the center, every player sees the timer upright • Dark Mode – perfect for cozy game nights Make your tile rummy game smoother, fairer, and more enjoyable!

About

Chess Clock

Features
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The last game clock you'll ever download. Chess Clock is a dedicated clock for chess, go, shogi and board games. Giant digits you can read from across the table. Every time control that actually exists. No ads, no account, and it works fully offline. NEW IN 2.0 • Instant touch: the clock switches the moment your finger lands. Slap it like a real clock. A slap with several fingers counts as one move, never two. • Visible delay: in simple delay a "delay 4" badge and a shrinking bar show why your main time is not running yet. • Keep playing after a flag (US Chess rules): your opponent has to claim the win. If both flags fall, it is a draw, and the game summary records who fell first. • Sunlight theme: black on white, the side to move inverted, bold digits and full screen brightness for outdoor games and bright halls. TAP ANYWHERE Your whole side of the screen is the button. No hunting for a tiny target while your flag is falling. EVERY TIME CONTROL • Fischer increment: time added after every move • Bronstein delay: get back what you used, up to the increment • Simple delay: your time runs only after the delay expires • Japanese byo-yomi: periods that reset each move • Canadian byo-yomi: a block of time for a set number of stones • Hourglass: your time flows to your opponent • Multi-stage controls: "40 moves in 90 minutes, then 30 minutes" • Sudden death, and any combination of the above 25 presets are ready to play: bullet 1+0, blitz 3+2 and 5+3, rapid 10+5, classical 90+30, FIDE 40/90+30, US delay 5|d5, go, Canadian byo-yomi, shogi, hourglass, and turn timers for board, card, word and party games. Build and save your own in seconds. BUILT FOR GO AND SHOGI Japanese and Canadian byo-yomi done properly, with period counts, stone counts and an audible countdown for the last five seconds. Most clocks skip this. We started here. 2 TO 6 PLAYERS Players sit around the table and the turn goes around with them. Reverse direction mid-game, knock out players who run out of time and keep playing, or give everyone a fixed time per turn. Perfect for board game night, not just duels. PER-PLAYER HANDICAP Give each player a different time control. Ideal for coaching, for teaching kids, and for uneven matchups. READ IT ACROSS THE TABLE Full-screen digits, each player's time turned to face them. Six themes: Modern, Retro LCD seven-segment, OLED Black, High Contrast, Wood Club and the new Sunlight. SOUND AND HAPTICS Two distinct tap tones, so you know who is on move without looking. Low-time warning, byo-yomi ticks, and a falling-flag buzzer. Turn it all off for a silent tournament hall. GAME STATISTICS Move counts, average and longest think, a think-time chart for every move, and your last 50 games in history. Share any result as one line of text. ACCESSIBILITY VoiceOver reads each player's time and state, and a double tap passes the move. Dynamic Type, Reduce Motion, and High Contrast and Sunlight themes. HONEST SOFTWARE No ads. No in-app purchases. No account. No tracking. It works fully offline, on a plane, in a park, in a tournament hall with no signal. The only time it goes online is a quick check for a newer version at launch. Available in 49 languages, translated by hand. Made for players who take the game seriously enough to want the clock to disappear.

Screenshots

Rummi Timer4 screens
Chess Clock4 screens

Verdict

The call

The clearest difference is update cadence: Chess Clock at every 3 months against Rummi Timer's every 10 months. Chess Clock also leads on iOS requirement (15.0 vs 18.4). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Rummi Timer ships an update every 10 months, Chess Clock every 3 months. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 4 level
Rummi Timer versus Chess Clock: the parameters behind the verdict, then further details
ParameterRummi TimerChess Clock
PriceFreeFree
Update frequencyEvery 10 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.415.0 — better
Further details — not scored
Size1 MB25 MB
Age rating4+4+
DeveloperHAN SHENG WANGlapnito.cz s.r.o.

In-app purchases

None

Rummi Timer

No in-app purchases

None

Chess Clock

No in-app purchases

Questions

Is Rummi Timer free?
Rummi Timer is free to download, with no in-app purchases.
Is Chess Clock free?
Chess Clock is free to download, with no in-app purchases.
Do Rummi Timer or Chess Clock have ads?
Neither Rummi Timer nor Chess Clock shows ads.
Which is updated more often, Rummi Timer or Chess Clock?
Rummi Timer ships an update every 10 months, and Chess Clock every 3 months. Most recently, Rummi Timer was updated on October 28, 2026 and Chess Clock on October 25, 2026.

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