Comparison

Halcyon Calc Lite vs my41CX

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

Head to head
About

Halcyon Calc Lite

This app is a powerful calculator for students and professionals, offering advanced features like symbolic expression manipulation, graphing, and statistical analysis. It supports real, complex, and integer numbers, matrices, and vectors, making it versatile for various mathematical tasks.

Highlights
  • Symbolic expression manipulation
  • Graphing of expressions
  • Matrix and vector calculations
  • Statistical analysis
  • Multiple number formats (decimal, hex, octal, binary)
  • Over 225 built-in operations
Features
Read full description

For students, engineers, scientists or people who fondly remember classic calculators, Halcyon Calc Lite is a great application for manipulating numbers and even symbolic expressions. Features: - Use this calculator on an iPhone, iPod Touch or an iPad - Use your finger to quickly scroll through the stack to review intermediate results - Copy and paste support - Over 225 built-in operations, including trig, logarithms, real functions, complex operations and more - Allows you to work with real, complex and integer numbers. - Real and complex numbers can be displayed in standard, fixed, scientific and engineering format - Integer numbers can be displayed in decimal, hexadecimal, octal and binary bases - Work with real and complex matrices and vectors - Enter symbolic expressions and solve them for different values. Even better, solve quadratic formulas, collect and expand factors and terms, find minima, maxima and roots of any expression. - Plot symbolic expressions in X/Y coordinates. Pan the coordinate space by dragging the plot in any direction. Zoom in and out using a pinch gesture. - Determine symbolic derivative, taylor series or numeric integral of an expression. - Store numbers, lists, strings and expressions in symbols. - Store statistical data and calculate totals, averages, standard deviations, linear regressions, etc over that data. - Calculate the probabilities associated with standard distributions like the normal, F and T distributions.

About

my41CX

Experience the most accurate HP-41CX calculator emulation. This app provides full microcode-level emulation of the original NUT processor, ensuring 100% hardware-accurate behavior. It features a modern interface, expandable ROM modules, and built-in documentation for a classic yet contemporary user experience.

Highlights
  • True microcode emulation
  • Modern user interface
  • Expandable with ROM modules
  • Built-in documentation
  • 100% hardware-accurate behavior
Read full description

The most accurate HP-41CX emulator available. my41cx delivers full microcode-level emulation of the legendary NUT processor, reproducing every behavior of the original hardware with complete fidelity. Built and refined over three major releases, my41cx v3 combines the precision of real hardware emulation with a modern interface designed for daily use. Key Features: - True Microcode Emulation: Not a simulation—an actual NUT processor emulator running original microcode for 100% hardware-accurate behavior. - Modern Interface, Classic Soul: A completely redesigned UI built for today's devices while preserving the authentic feel of the original calculator. - Expandable with ROM Modules: Load external ROM modules to extend the system, just like the real HP-41CX. - Built-in Documentation: Access manuals and reference material directly within the app—no need to search for PDFs. Perfect for engineers, students, scientists, and anyone who appreciates the elegance of HP's finest programmable calculator. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Halcyon Calc Lite4 screens
my41CX4 screens

Verdict

The call

The clearest difference is ads: my41CX at none against Halcyon Calc Lite's shown. my41CX also leads on rating (5.0 vs 4.6). Halcyon Calc Lite's advantage is review sentiment (67% vs 43%) and ratings volume (15 vs 1). On price, update cadence, in-app purchases and monetization model 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. Halcyon Calc Lite sells 3 one-off in-app purchases and my41CX sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

my41CX holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Halcyon Calc Lite has 15 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 67% of Halcyon Calc Lite's written reviews are positive against 43% of my41CX's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Halcyon Calc Lite ships an update every 3 months, my41CX every 2 months. The most recent releases landed on October 27, 2026 and October 23, 2026 respectively.

Scorecard5 real differences · 5 level
Halcyon Calc Lite versus my41CX: the parameters behind the verdict, then further details
ParameterHalcyon Calc Litemy41CX
PriceFreeFree
Rating4.6 (15 ratings)5.0 (1 ratings) — better
Positive reviews66.7% of reviews — better43.4% of reviews
Number of ratings15 — better1
Update frequencyEvery 3 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.6 — better26.0
Further details — not scored
Size13 MB5 MB
Age rating4+4+
DeveloperHalcyon Touch SoftwareMiroslav Perovic

Customer experience

Halcyon Calc Lite

All ratings15 ratings
Positive93.3%
Neutral0.0%
Negative6.7%
Written reviews12 reviews
Positive66.7%
Neutral8.3%
Negative25.0%

my41CX

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews53 reviews
Positive43.4%
Neutral9.4%
Negative47.2%

Bugs and requests

Halcyon Calc Lite

Not enough reviews yet to summarise bugs or requests.

my41CX

Reported bugs

38 issues
  • Cannot enter anything via keyboard on Mac
  • Locks up when running a program
  • Crashes under IOS 13.2.3
  • Application quits after touching screen
  • Keys 'V' and 'W' inverted when ALPHA mode is switched on
Show 33 more
  • GUI no longer accurate visual reproduction
  • Incompatible with IOS 13.2
  • Crashes systematically on hitting any key
  • App closes after launch
  • Not functional
  • Unusable
  • Crashes on startup
  • App closes when touching keys
  • Reverts to main screen when pressing buttons
  • Flashes on screen and disappears
  • Instant shutdown when trying to use it
  • Shuts down as soon as screen is touched
  • Shuts down when attempting to tap any key
  • Crashes constantly after IOS update
  • Closes the app as soon as you touch the screen
  • Stopped working with iso 13.3
  • Crashes as soon as I touch a key
  • Broken on iOS 13.2
  • Font for unshifted keys too small
  • Functions faint and blurry
  • Freezes when executing commands
  • Low contrast
  • No key feedback
  • Unstable and crashes
  • Slow performance
  • Stopwatch function not real time
  • Memory not reliably retained
  • Loses all work
  • Massive memory leaks
  • Trashes program
  • Incredibly slow
  • Locks up
  • Glitches while switching modes

Requested features

5 requests
  • Larger buttons
  • Option for tactile/Haptic feedback for keys
  • Option for beep sound
  • Instructions for mod files
  • Better Mac UI

In-app purchases

3 purchases

Halcyon Calc Lite

One-time3
  • Directory And Unit Conversion Support$0.99
  • Programming Support$1.99
  • Larger Display Upgrade$1.99
3 purchases

my41CX

Subscriptions2
  • Monthly$0.991 Month
  • Yearly Premium$9.991 Year
One-time1
  • Unlock Full App$19.99

Questions

Is Halcyon Calc Lite free?
Halcyon Calc Lite is free to download, with in-app purchases available.
Is my41CX free?
my41CX is free to download, with in-app purchases available.
Which has better reviews, Halcyon Calc Lite or my41CX?
my41CX is rated higher. Halcyon Calc Lite averages 4.6 out of 5 from 15 ratings, while my41CX averages 5.0 from 1 ratings.
Do Halcyon Calc Lite or my41CX have ads?
Halcyon Calc Lite shows ads; my41CX does not.
Which is updated more often, Halcyon Calc Lite or my41CX?
Halcyon Calc Lite ships an update every 3 months, and my41CX every 2 months. Most recently, Halcyon Calc Lite was updated on October 27, 2026 and my41CX on October 23, 2026.

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