Comparison

C vs Dozecal

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

Head to head
About

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.

Highlights
  • Automatic time registration at places
  • Arrival/departure notifications
  • Manual start/stop tracking
  • Edit recorded times
  • Social media sharing
Features
Read full description

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

About

Dozecal

This educational calculator promotes the use of Base Twelve (duodecimal) in math and science. It offers standard mathematical functions in both duodecimal and decimal modes, with automatic conversion between them. It utilizes Reverse Polish Notation (RPN) for calculations.

Highlights
  • Duodecimal and Decimal modes
  • Automatic mode conversion
  • RPN (Reverse Polish Notation) input
  • Standard math functions
  • Trigonometric operations (degrees)
  • Educational tool for Base Twelve
Features
Read full description

Dozecal is an educational RPN* calculator to promote the use of Base Twelve in math and science. The usual math functions are available in both DUODECIMAL and DECIMAL modes. Conversion is automatically made when switching from one mode to the other one. Trigonometric operations uses DEGREE as unit of measure. For more information about Base 12, please visit the Dozenal Society of America. * RPN : the Dozecalc calculator uses the Reverse Polish Notation (RPN). This notation seems complex but has many advantages over algebraic notation and is more intuitive once you have understood the idea. The calculator has a stack and any operation that requires two numbers is using the bottom stack layers (X and Y). Key ENTER to push the stack up and separate one number from the next. To perform arithmetic, key in the first number, press ENTER to separate the first number from the second, then key in the second number and then select and operator such as the numerical functions +, -, * or /. The result appears immediately after you press the numerical function key. The operator is keyed in only after both operands are in the stack. Example: calculate 3 + 4 Key sequence: 3 ENTER 4 + Result: 7 The result of any operation may itself become an operand. You do not need to press enter again to use the result. The "7" is already entered. Example: add 2 to the previous result Key sequence: 2 + Result: 9 Example: calculate 5 * (3 + 4) Key sequence: 3 ENTER 4 + 5 * Alternate key sequence: 5 ENTER 3 ENTER 4 + * Disclaimer: results and precision may occasionally be incorrect. Should you report them at johan@unumdesignum.com, and the author will be happy to fix !

Screenshots

C4 screens
Dozecal4 screens

Verdict

The call

The clearest difference is in-app purchases: Dozecal at none against C's 1. Dozecal also leads on review sentiment (75% vs 64%) and device support (3 vs 1). C's advantage is update cadence (every 3 weeks vs every 10 months). On price, rating, ratings volume and ads 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. C sells 1 one-off in-app purchase. Dozecal asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.0 for C against 4.0 for Dozecal. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews are what separate them: 64% of C's written reviews are positive against 75% of Dozecal's.

UpkeepUpdate frequency

C ships an update every 3 weeks, Dozecal every 10 months. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

Scorecard6 real differences · 4 level
C versus Dozecal: the parameters behind the verdict, then further details
ParameterCDozecal
PriceFreeFree
Rating4.0 (2 ratings)4.0 (4 ratings)
Positive reviews63.6% of reviews75.0% of reviews — better
Number of ratings24 — better
Update frequencyEvery 3 weeks — betterEvery 10 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.012.0 — better
Further details — not scored
Size3 MB27 MB
Age rating4+4+
DeveloperSiegwareJohan Kovacs

Customer experience

C

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews11 reviews
Positive63.6%
Neutral9.1%
Negative27.3%

Dozecal

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

1 purchases

C

One-time1
  • C-Time Pro Upgrade$4.99
None

Dozecal

No in-app purchases

Questions

Is C free?
C is free to download, with in-app purchases available.
Is Dozecal free?
Dozecal is free to download, with no in-app purchases.
Which has better reviews, C or Dozecal?
C and Dozecal are both rated 4.0 out of 5 on the App Store, from 2 and 4 ratings respectively.
Do C or Dozecal have ads?
Neither C nor Dozecal shows ads.
Which is updated more often, C or Dozecal?
C ships an update every 3 weeks, and Dozecal every 10 months. Most recently, C was updated on October 13, 2026 and Dozecal on October 2, 2026.

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