Comparison

ClockMate vs OTB Clock

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

Head to head
About

ClockMate

Features
Read full description

ClockMate is the chess clock you actually want at the board. No account, no ads, no setup — just tap and play. Tap your half of the screen when you've finished your move. The timer switches automatically. Simple enough for a kitchen table game, reliable enough for a club match. FREE FEATURES • Bullet (1+0), Blitz (3+2), Blitz (5+0), Rapid (10+0), Rapid (15+10), Classical (90+30) • Fischer increment — the FIDE standard • Digital and analog clock face • Move counter per player • Sound and haptic feedback on every tap • Flag-fall alarm when time runs out • Landscape orientation for table play UPGRADE TO PRO — ONE PURCHASE, NO SUBSCRIPTION • Set any time control — minutes, seconds, and increment freely configurable • Bronstein delay and Simple delay — for players who need them • 4 themes: Wood, Tournament Black, Minimal White, OLED Dark • 2 additional sound packs + silent mode • Game history — last 10 games with move counts and time stats No cloud. No login. No ads. Everything works offline.

About

OTB Clock

Features
Read full description

OTB Clock is a precise chess clock for over-the-board games. Supports all standard time controls from bullet to classical. Features: - Bullet, Blitz, Rapid, and Classical presets - Fischer increment support - Move counter - Tap-to-switch interface - Screen stays on during games - Custom time control creation Premium unlocks all time control presets and custom time controls. Free users get 3-minute, 5-minute, and 10-minute presets. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://frexx.top/privacy Privacy Policy: https://frexx.top/otbclock/privacy.html Terms of Use: https://frexx.top/otbclock/terms.html

Screenshots

ClockMate4 screens
OTB Clock3 screens

Verdict

The call

The clearest difference is update cadence: OTB Clock at every 2 weeks against ClockMate's every 2 months. On price, ads, in-app purchases and device support 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 1 one-off in-app purchase and OTB Clock sells 1 in-app purchase, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ClockMate ships an update every 2 months, OTB Clock every 2 weeks. The most recent releases landed on September 6, 2026 and September 19, 2026 respectively.

Scorecard1 real difference Ā· 5 level
ClockMate versus OTB Clock: the parameters behind the verdict, then further details
ParameterClockMateOTB Clock
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size8 MB1 MB
Age rating4+4+
DeveloperTobias Huppertzꝰ 向

In-app purchases

1 purchases

ClockMate

One-time1
  • ClockMate Pro$0.99
1 purchases

OTB Clock

Subscriptions1
  • Premium — Yearly3 Days trial$19.991 Year

Questions

Is ClockMate free?
ClockMate is free to download, with in-app purchases available.
Is OTB Clock free?
OTB Clock is free to download, with in-app purchases available.
Do ClockMate or OTB Clock have ads?
Neither ClockMate nor OTB Clock shows ads.
Which is updated more often, ClockMate or OTB Clock?
ClockMate ships an update every 2 months, and OTB Clock every 2 weeks. Most recently, ClockMate was updated on September 6, 2026 and OTB Clock on September 19, 2026.

Other comparisons