Comparison

calculatorX2 vs C

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

Head to head
About

calculatorX2

Features
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"calculatorX2" is a SCIENTIFIC calculator "D.A.L." (Direct Algebraic Logic). Using the "D.A.L." the precedence of the mathematical operators is automatically taken into account by the calculator and it will therefore be possible to insert the various formulas, calculations, in the same order as they are written on the paper: the calculator will assign the right precedence to the various mathematical operators, brackets, functions, etc. Particularly suitable for both complex and simple calculations, suitable for all those who wish to have a "simple" and "accessible" interface. Input method: - D.A.L. (Direct Algebraic Logic) Types of calculator: - SCIENTIFIC (landscape orientation) Graphics of the calculator: - customizable: you can choose between 6 themes available (included in the app) App type: - UNIVERSAL APP

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
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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

Screenshots

calculatorX23 screens
C4 screens

Verdict

The call

The clearest difference is price: C at Free against calculatorX2's $0.99. C also leads on update cadence (every 3 weeks vs every 42 months). calculatorX2's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement 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

C is free to download; calculatorX2 costs $0.99 up front. C sells 1 one-off in-app purchase. calculatorX2 asks for nothing beyond the download.

UpkeepUpdate frequency

calculatorX2 ships an update every 42 months, C every 3 weeks. The most recent releases landed on October 16, 2026 and November 1, 2026 respectively.

Scorecard3 real differences · 7 level
calculatorX2 versus C: the parameters behind the verdict, then further details
ParametercalculatorX2C
Price$0.99Free — better
Rating—4.0 (2 ratings) — better
Positive reviews—63.6% of reviews
Number of ratings—2 — better
Update frequencyEvery 42 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS16.6 — better17.0
Further details — not scored
Size12 MB3 MB
Age rating4+4+
DeveloperGianluca NataliniSiegware

In-app purchases

None

calculatorX2

No in-app purchases

1 purchases

C

One-time1
  • C-Time Pro Upgrade$9.99

Questions

Is calculatorX2 free?
calculatorX2 costs $0.99, with no in-app purchases.
Is C free?
C is free to download, with in-app purchases available.
Do calculatorX2 or C have ads?
Neither calculatorX2 nor C shows ads.
Which is updated more often, calculatorX2 or C?
calculatorX2 ships an update every 42 months, and C every 3 weeks. Most recently, calculatorX2 was updated on October 16, 2026 and C on November 1, 2026.

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