Calculator SC vs it.4Ecar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator SC
This app provides a multi-functional calculator with a familiar interface. It includes scientific, unit conversion, and logic calculation modes, along with extensive mathematical functions and constants. Calculations can be shared across modes, and it supports copy-paste functionality.
- Scientific calculator mode
- Unit converter and calculator
- Logic calculator (n-base conversion)
- Algebraic logic and calculation priority
- Variables and memories
- Complex number calculations
- Unit and currency converter
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The SC-323PU is a multi functional calculator. It is designed in a way, that it simulates the visual and operational aspects of a true pocket calculator, such that the user will be immediately familiar with its interface. A complete operation manual is included within the App. The SC-323PU offers the following calculator modes for different tasks: - SCIENTIFIC CALCULATOR - UNIT CONVERTER and UNIT CALCULATOR - LOGIC CALCULATOR (n-base conversion) • Full operating instructions are included in the App (visible when device is in landscape orientation). • All modes share the same memory contents, and calculation value, so that the different calculator modes can be used in one calculation task. • Pasteboard support (copy and paste) • Algebraic logic for calculation entry. • Priority of calculations according to a given mathematical formula. • 30 levels of parentheses or pending operations. • Variables and memories to store values and use in calculations. • Floating decimal point calculations with 20 digits mantissa and 2 digits exponent. • Calculations: Four arithmetic calculations, constant calculation, memory calculations, trigonometric and inverse trigonometric functions, hyperbolic and inverse hyperbolic functions, conversion of angles and time, reciprocals, square roots and cubic roots, X-th roots of Y, squares and powers, logarithmic and exponential functions, factorials, permutations, combinations, conversions of coordinates. • AER (Algebraic Expression Reserve) for repetitive calculations of expressions and formulas. • Complex number calculations. • Different display modes selectable: floating point decimal, fixed point decimal, scientific notation and engineering notation. • DEG/RAD/GRAD selector key. • Fraction calculations. • Time calculations. • Frame rate calculations. • 47 physical constants. • Unit converter and currency converter. • Calculations with mixed units. • The calculator is shipped with 84 physical units and 16 SI prefixes predefined. • Exchange rate of currency units will be updated automatically from internet. • Additional units can be defined by user. • Single and two lines view modes optimized for different conversion tasks. • Conversions between 4 base systems HEX, DEC, OCT, BIN. • Boolean operations AND, OR, XOR, NOT, bit shift operations. • Conversion from “little endian” to “big endian” format and vice versa. • Handling of 8, 16, 32 and 64 bit signed and unsigned numbers including overflow calculations. Also on your Apple Watch! You can do basic calculations, tip calculations, unit and currency conversions and even scientific calculations directly on your wrist. Designed with large keys for best usability on the small screen.
it.4Ecar
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it.4Ecar - the solution for private charging and billing of your hybrid or electric vehicle as a company car - now on the iPhone! SIMPLE & EFFECTIVE Are you also tired of recording the home charging transactions for your company car individually and entering them into a predefined form in order to be able to bill them? Is the switch to an electric company car currently failing due to your employer's requirements for the installation of a specific wallbox? Perhaps you don't have a wallbox but only an socket with a downstream electricity meter? Or maybe your wallbox is not that "smart" and can communicate with the outside world and you still want to keep the effort for recording low? Our app solves all these problems and much more with an intuitive and easy-to-use interface. DOWNLOAD & TEST FOR FREE You can download and test it.4Ecar for free. The free version can be used for as long as you want and contains no functional limitations. We are looking forward to your feedback on your experiences, discovered bugs or missing functionalities! ALSO PREPARED AND SUITABLE FOR YOUR BUSINESS In addition to the features mentioned above, our app is also well prepared to handle the complete billing of electric cars as well as hybrid vehicles in your company. In addition to the actual app, we offer a corresponding dashboard with flexible approval processes as well as integration into your backend system. THE MOST IMPORTANT FUNCTIONS AT A GLANCE o Test free of charge and without risk! o Capture invoices and other receipts as a photo, read out data using image recognition and archive them o Import PDF or CSV files from your Wallbox Cloud for easy employer billing o Create and send invoices as PDF with individual address o Scan KM status of vehicle and meter o Full data protection: no registration required and of course no data is transferred to us - your data is and remains your data. o All information at a glance and clearly displayed o Enter and record new charging transactions or special expenses with private charging card with just a few clicks o and much more... Would you like to use the app as a responsible person in your company or do you need a connection to other systems (SAP, Microsoft, etc.)? Do not hesitate and contact us! Mail: emobility-colab-solutions-de@nttdata.com
Screenshots
Verdict
The clearest difference is price: it.4Ecar at Free against Calculator SC's $3.99. it.4Ecar also leads on update cadence (every 3 weeks vs every 5 months). Calculator SC's advantage is device support (5 vs 2) and iOS requirement (12.0 vs 15.0). On ads and in-app purchases 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
it.4Ecar is free to download; Calculator SC costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Calculator SC ships an update every 5 months, it.4Ecar every 3 weeks. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.
| Parameter | Calculator SC | it.4Ecar |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.7 (118 ratings) — better | — |
| Positive reviews | 83.0% of reviews | — |
| Number of ratings | 118 — better | — |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 15 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Öllinger | NTT DATA Business Solutions AG |
Bugs and requests
Calculator SC
Reported bugs
12 issues- Deg/Rad mode switching bug with inverse tangent function
- Rounding error when using fractions
- Incorrectly calculates negative numbers squared
- Watch app not working
- App opens not working after update
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- Sine function shows wrong sign for certain negative degrees
- Display pushed out of view on iPad
- App freezes or becomes unusable after switching between portrait and landscape
- Incorrect calculation for fractions (-1/2 - 1/3)
- Stopped working after a week
- DAL calculator doesn't have a backspace
- Software not very responsive
Requested features
16 requests- Ability to change ordering of fundamental constants
- Display expressions in scientific mode
- Larger font size for expressions in DAL
- Option to revert to older UI design
- Quadratic equation solver mode
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- Customization of display font size and colors
- Graphing functionality
- Ability to change the design/layout
- Copy and paste functionality
- Key click feedback
- More programming functions (rotate, ASCII, bit mask builder)
- Time/frequency specific conversions, memory, etc.
- Translate help and settings to French
- iPad compatibility improvements
- Backspace in DAL mode
- Sound feedback for key presses
it.4Ecar
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator SC
No in-app purchases
it.4Ecar
No in-app purchases









