CMCalc vs inBinary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CMCalc
This app emulates a classic 1980s computer math calculator, offering decimal arithmetic, binary conversions, and logic functions. It supports parentheses for complex calculations and includes modern features like copy/paste and landscape mode.
- Decimal arithmetic
- Binary conversions (decimal, binary, octal, hexadecimal)
- Binary logic functions
- Operator grouping with parentheses
- Hexadecimal input (A-F)
- Copy and paste results/functions
- Landscape mode
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The CMCalc application is a replica of the Casio CM-100 Computer Math Calc solar powered calculator that was sold in the mid 1980’s. It performs simple decimal arithmetic and basic binary conversions (decimal - binary - octal - hexadecimal) and binary logic functions. While it is a standard infix calculator, it supports operator grouping with parentheses. For hexadecimal calculations, the input keys include A through F. CMCalc application performs all the same functions as the calculator, and has the same look as the original. There are a couple features that were not conceivable in the 1980’s on a calculator … such as the ability to copy and paste the results or the entered function, and a landscape mode for devices with 4 inch or larger screens. The face of the calculator can be viewed in two modes including a traditional application style, and a photo replica of the original calculator face.
inBinary
Convert numbers between decimal, binary, hexadecimal, and octal systems. Look up ASCII characters by code or symbol, and perform bitwise operations like NOT, AND, and OR on numbers in various bases.
- Number base conversion (Decimal, Binary, Hex, Octal)
- ASCII character lookup
- Bitwise operations (NOT, AND, OR, XOR, NAND, NOR)
- Supports bases 2-16
- Ad-free experience
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Since the dawn of time, developers have constantly asked themselves the following questions: What is 42 in Binary? What about in Hex? And in Octal? What's the hex and decimal ASCII code for the letter 'G'? Is 2B OR NOT 2B equal to 3F or to FF? And to get the answer, they had to install all sorts of apps, cause there was no single, all-in-one solution. Not any more! inBinary allows you to quickly convert numbers between the four most common numbering systems (Decimal, Binary, Hexadecimal and Octal) And to look-up any ASCII (printable) character by HEX code, Decimal value (DEC) or even Symbol It can also calculate the following operations: * NOT * AND * OR * XOR * NAND * NOR On any two numbers in any base (yes, any base you can think of between base-2 and base-16, it even works for base-13). And what's best is that inBinary has: * ABSOLUTELY NO ADS * ABSOLUTELY NO ANALYTICS Thank you for reading this far :-) Enjoy inBinary
Screenshots
Verdict
The clearest difference is price: CMCalc at Free against inBinary's $0.99. inBinary's advantage is review sentiment (100% vs 75%) and update cadence (every 19 months vs every 45 months). On ads, in-app purchases, 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
CMCalc is free to download; inBinary costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
CMCalc ships an update every 45 months, inBinary every 19 months. The most recent releases landed on September 7, 2026 and September 16, 2026 respectively.
| Parameter | CMCalc | inBinary |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.5 (6 ratings) — better | — |
| Positive reviews | 75.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 — better | — |
| Update frequency | Every 45 months | Every 19 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 4 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | William David | Ioan Moldovan |
Customer experience
CMCalc
inBinary
In-app purchases
CMCalc
No in-app purchases
inBinary
No in-app purchases









