Comparison

CMCalc vs my16c

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

my16c

This app emulates a legendary programmer's calculator from the 1980s, offering cycle-accurate performance and faithful reproduction of its features. It includes base conversions, bit manipulation, RPN, and programmability, with modern conveniences like iCloud sync and a dark interface.

Highlights
  • Cycle-accurate emulation
  • Full base conversion (HEX, DEC, OCT, BIN)
  • Bit operations
  • RPN entry
  • Programmable
  • Authentic LCD display
  • Word size control
Read full description

The programmer's calculator that defined an era — now in your pocket. my16C brings the legendary 16C Voyager series programmer's calculator back to life with cycle-accurate emulation running the original microcode. Every keystroke, every display flicker, every RPN operation — faithfully reproduced. WHY PROGRAMMERS LOVE THE 16C The 16C wasn't just a calculator — it was the essential tool for every serious programmer and computer engineer in the 1980s. Its unique combination of base conversions, bit manipulation, and RPN logic made it indispensable. Decades later, it remains unmatched. FEATURES • Cycle-accurate emulation — runs the original Voyager microcode, not a simulation • Full base conversion — HEX, DEC, OCT, and BIN at the press of a key • Bit operations — shifts, rotates, AND, OR, XOR, NOT, 1's and 2's complement • RPN entry — the efficient Reverse Polish Notation stack system • Programmable — write, store, and run programs just like the original • Authentic 7-segment LCD display with all original annunciators • Word size control (WSIZE) — work with 8, 16, 32, or 64-bit integers • Floating point mode for standard calculations • Unsigned and signed arithmetic modes BUILT FOR TODAY • iCloud sync — your calculator state follows you across devices • Native on iPhone and Mac — landscape optimized on iOS, resizable window on macOS • Full keyboard support on Mac — type numbers and operators directly • Dark interface faithful to the original Voyager design • Built-in Owner's Manual for quick reference TRY BEFORE YOU BUY my16C includes a free trial period so you can experience the full calculator before purchasing. A single one-time purchase unlocks the app forever — no subscriptions. Whether you're a software engineer debugging hex values, a retro computing enthusiast, or someone who remembers the original on their desk — my16C is the most authentic way to use the legendary 16C today.

Screenshots

CMCalc4 screens
my16c3 screens

Verdict

The call

The clearest difference is review sentiment: CMCalc at 75% against my16c's 0%. CMCalc also leads on in-app purchases (none vs 1) and iOS requirement (12.0 vs 26.0). my16c's advantage is update cadence (fortnightly vs every 45 months). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. my16c sells 1 one-off in-app purchase. CMCalc asks for nothing beyond the download.

UpkeepUpdate frequency

CMCalc ships an update every 45 months, my16c fortnightly. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

Scorecard5 real differences · 5 level
CMCalc versus my16c: the parameters behind the verdict, then further details
ParameterCMCalcmy16c
PriceFreeFree
Rating4.6 (7 ratings) — better—
Positive reviews75.0% of reviews — better0.0% of reviews
Number of ratings7 — better—
Update frequencyEvery 45 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, Mac — better
Requires iOS12.0 — better26.0
Further details — not scored
Size4 MB9 MB
Age rating4+4+
DeveloperWilliam DavidMiroslav Perovic

Customer experience

CMCalc

All ratings6 ratings
Positive83.3%
Neutral16.7%
Negative0.0%
Written reviews4 reviews
Positive75.0%
Neutral25.0%
Negative0.0%

my16c

Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

None

CMCalc

No in-app purchases

1 purchases

my16c

One-time1
  • Unlock Full App$9.99

Questions

Is CMCalc free?
CMCalc is free to download, with no in-app purchases.
Is my16c free?
my16c is free to download, with in-app purchases available.
Do CMCalc or my16c have ads?
Neither CMCalc nor my16c shows ads.
Which is updated more often, CMCalc or my16c?
CMCalc ships an update every 45 months, and my16c fortnightly. Most recently, CMCalc was updated on October 29, 2026 and my16c on October 28, 2026.

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