Comparison

ClockMate vs Chess Clock Duo

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

Head to head
About

ClockMate

Features
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ClockMate is a clean, elegant chess clock for two players sitting across the board. Tap to start, then tap your own side to pass the move to your opponent. RICH TIME CONTROLS • Fischer increment, Bronstein and simple/US delay • Multi-period tournament times (e.g. 90+30 after 40 moves) • Asymmetric mode: a different time for each player • Ready presets: Bullet, Blitz, Rapid, Classical • Build and save your own custom time control AND MORE • Berserk mode (Lichess-style) • Match / series score tracking with saved game recovery • Player names, match history and shareable result cards • Favourite time controls and alternating colours for rematches • Undo the last tap and adjust time while paused • 9 clock faces (classic black & white, modern, digital/DGT, analog, hourglass and more) • 15 languages • The screen stays awake during play, and timing stays accurate even in the background COMPLETELY FREE No ads, no subscriptions, no locked features. There is only an optional, voluntary tip — you miss nothing if you skip it. Enjoy your game!

About

Chess Clock Duo

Features
Read full description

Chess Clock is the elegant, fair game timer for two players — no ads, no tracking, no distractions. Perfect for blitz, bullet, rapid and classic tournament games. Pick a time format, place your iPhone between you and start tapping: after each move a player taps their side and the opponent's clock starts. Clear, fast and distraction-free. FEATURES • Ready-made time formats for blitz, bullet, rapid and tournament • Custom time controls with base time, phases and increment (Pro) • Increment modes: Fischer, Bronstein and simple delay (Pro) • Large, easy-to-read display — even from across the table • Live Activity for the Lock Screen and Dynamic Island • 15 color themes — every color beyond classic black & white (Pro) • Sound packs including "Quiet" for silent tournament halls (Pro) • Landscape mode: clock flat on the table, both halves side by side (Pro) • Saved setups: load up to 10 configurations with one tap (Pro) • Game history: your last 10 games with time statistics (Pro) BUILT FOR OVER-THE-BOARD PLAY Time controls follow the formats you already play — from 3+2 blitz and 15+10 rapid to multi-phase FIDE tournament schedules that add time after move 40. Speed chess or a grandmaster-length game: no hourglass guesswork, no arguing about who flagged. CHESS CLOCK PRO Unlock every professional feature with Chess Clock Pro — monthly, yearly, or once and forever. Pick what suits you; subscriptions can be cancelled anytime. Whether at the club, at a tournament or at home on the kitchen table: Chess Clock puts a professional chess clock on your iPhone. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ClockMate4 screens
Chess Clock Duo4 screens

Verdict

The call

The clearest difference is iOS requirement: ClockMate at 15.0 against Chess Clock Duo's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. ClockMate sells 4 one-off in-app purchases and Chess Clock Duo sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ClockMate ships an update every 4 months, Chess Clock Duo every 3 months. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

Scorecard1 real difference Ā· 5 level
ClockMate versus Chess Clock Duo: the parameters behind the verdict, then further details
ParameterClockMateChess Clock Duo
PriceFreeFree
Update frequencyEvery 4 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.0
Further details — not scored
Size22 MB11 MB
Age rating4+4+
DeveloperMUSTAFA NURI PEKDEMIRVincent Grellert

In-app purchases

4 purchases

ClockMate

One-time4
  • Pawn Tip$0.99
  • Knight / Bishop Tip$2.99
  • Rook Tip$4.99
Show 1 more
  • Queen Tip$8.99
3 purchases

Chess Clock Duo

Subscriptions2
  • Pro Monthly$0.991 Month
  • Pro Yearly$8.991 Year
One-time1
  • Chess Clock Pro$24.99

Questions

Is ClockMate free?
ClockMate is free to download, with in-app purchases available.
Is Chess Clock Duo free?
Chess Clock Duo is free to download, with in-app purchases available.
Do ClockMate or Chess Clock Duo have ads?
Neither ClockMate nor Chess Clock Duo shows ads.
Which is updated more often, ClockMate or Chess Clock Duo?
ClockMate ships an update every 4 months, and Chess Clock Duo every 3 months. Most recently, ClockMate was updated on October 31, 2026 and Chess Clock Duo on November 10, 2026.

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