C vs Chess Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
C
Automatically track the time you spend at specific locations like work or school. The app uses geofencing to record your entries and exits, providing daily, monthly, and yearly summaries. You can also manually start/stop tracking and edit recorded times.
- Automatic time registration at places
- Arrival/departure notifications
- Manual start/stop tracking
- Edit recorded times
- Social media sharing
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Your time is precious. C-Time shows you where it really goes - automatically. How many hours did you actually work this month? How often did you make it to the gym? C-Time answers these questions without you lifting a finger: define your place once, and the app clocks you in when you arrive and out when you leave. No buttons to press, no timers to forget, no extra battery drain - it uses Apple's geofence technology, not GPS. Open the app and your numbers are just there: today, this week, this month, this year - clean statistics, automatically backed up to iCloud. WHAT C-TIME DOES FOR YOU • clocks you in and out automatically at your place - work, gym, wherever • shows the running time live on the lock screen, in the Dynamic Island and on Apple Watch • history per day, month and year with clear charts • set a daily goal per place and see today's over/under at a glance - turns green when you reach it • a Home & Lock Screen widget with your goal ring - progress at a glance • add a note to any check-in - shown in history, in the CSV export and on the main screen • automatic daily break deduction per place - e.g. 30 min once a day passes 4 hours (off by default) • notifies you on arrival and departure • manual clock in/out and editing whenever you need it • automatic iCloud backup, plus backup to a file and restore • speaks English, German, Spanish, French, Italian, Japanese, Korean and Chinese Set it up in one minute. Forget it. Know your hours. C-Time Lite is free: monitor one place and see all details for 4 weeks. The Pro upgrade (in-app purchase) removes all limits: • monitor up to 20 places (an iOS limit) • monitor your time indefinitely • export your data: beautiful PDF report, CSV, e-mail, backup file TIPS □ The automatic mode runs at its best when Wi-Fi is enabled. □ C-Time uses the same technology (geofence) as Apple's "Reminders" app. ================================================ What customers have said about C-Time: ================================================ △ Incredible app. I always forget to clock my time. With this app, its automagically handled. Love it! △ Pretty neat. I like this app a lot. It is really helping me track my work time without me having to remember to enter anything. △ Many uses. Now I dont have to remember what day/time Im called in to work on the off hours. Works great. Highly recommend. △ Works Great. Flawless....works great, and Geofencing is spot on! △ Very smart app. This app is one of the best I used. Its smart, useful, works great, & I highly Recommend it :) △ Love the idea behind this app! Can track how much time at work, girlfriends, favorite bar, volunteering... Great idea! △ Perfect app. No need anymore to bother with tables to fill manually the hours in. All needed time stamps are logged automatically!! △ Perfect app. Simple to use and helpful to have the overview where time was spent. Congratulations! △ Great App to know where you spend your time. Works as advertised. Does NOT drain your batteries as it uses the same geofence mechanism also used by iOS for reminders and such. △ Great App!! I use it now for 2 weeks and its quite impressing to see where I spend my time. Its really simple to use. Great job. △ Very nice. A very useful and easy to use application. Good job! △ This app is really cool. It helps me see how much time I spend in school. It is so useful. Very good app. △ Très bonne application. Très pratique et fonctionne à merveille. On peut regretter labsence de calcul dheure (heure journalière, pause de midi,...) mais cette application fait ce quelle prêtant et de manière très fiable. △ Great. Funciona bem e tem boas funcionalidades. Recomendo. △ 매우 좋아요. 자동 체크인 체크아웃 해주고, 자신의 동선 자동 관리가능하며 개인적으로 장소들을 관리할 수 있다는 점이 아주 마음에 듭니다. 앞으로 더 기대되네요
Chess Clock
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The most beautiful chess clock on iPhone. Tempo is a native, drift‑free chess clock built for modern iOS. One‑tap simple for a casual game between friends; tournament‑accurate when it counts. No ads. No clutter. Just a gorgeous clock that keeps honest time. ► FREE, AND FAIR Both players always get an accurate, mute‑able clock — free, forever. Count down to the flag, or switch to Count Up and run each side as a stopwatch. Play, pause, reset. That’s the whole game, and none of it is behind a paywall. ► DRIFT‑FREE PRECISION Most clock apps slowly drift and lose time — fatal in blitz. Tempo derives every reading from the phone’s monotonic clock, so the time is always correct to the millisecond. Tenths of a second kick in automatically under 20s. ► EVERY TIME CONTROL Presets from Bullet to Classical, plus the full competitive spectrum: Fischer increment, Bronstein, Simple Delay, and Hourglass. Build and save your own — including asymmetric handicap times for uneven matchups and coaching. ► SEVEN LIVING CLOCK FACES Not recolors — full renderers, each with its own digits, motion, and time‑trouble behavior: Minimal, LED, Flip split‑flap, Analog with a real falling flag, Nixie tubes, Pixel dot‑matrix, and the gilded Grandmaster (with its own boom‑bap sound). Switch anytime with live previews. ► HANDS‑FREE & ACCESSIBLE Spoken countdowns (“one minute… ten… flag”) and per‑move readback let you play without looking. Pick any voice installed on your phone. A genuine accessibility win — and nobody else in the category ships it. ► LIVE ON YOUR LOCK SCREEN The active clock ticks in the Dynamic Island and on the Lock Screen, so you can follow the game without keeping the app open. ► BUILT TO BE TRUSTED The screen stays awake all game. It auto‑pauses if you leave the app and reconciles the time perfectly. Reset needs a deliberate confirm mid‑game, so a stray tap never wipes your position. ► HAPTIC & SOUND A satisfying thump on every turn, a warning when a side drops low, and an alarm on the flag. Turn any of it off — for free. ► HISTORY & STATS Every finished game is logged: winner, time control, moves, duration — with win splits and averages. Not just for chess: Tempo is a perfect timer for Go, Shogi, Scrabble, backgammon, and debate. —— TEMPO PRO (optional, one‑time unlock) The clock is free. Pro adds all seven faces, the Bronstein/Delay/Hourglass modes, live add/remove‑minutes, unlimited custom controls, and spoken time.
Screenshots
Verdict
The clearest difference is update cadence: Chess Clock at every 5 days against C's every 3 weeks. 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
Both are free to download. C sells 1 one-off in-app purchase and Chess Clock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
C ships an update every 3 weeks, Chess Clock every 5 days. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.
| Parameter | C | Chess Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) — better | — |
| Positive reviews | 63.6% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Siegware | Dmitry Kalashnikov |
In-app purchases
C
- C-Time Pro Upgrade$4.99
Chess Clock
- Tempo Pro$4.99









