Halcyon Calc Lite vs ExSciCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Symbolic expression manipulation
- Graphing of expressions
- Matrix and vector calculations
- Statistical analysis
- Multiple number formats (decimal, hex, octal, binary)
- Over 225 built-in operations
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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.
ExSciCalc
This calculator offers enhanced precision and memory beyond standard devices. It includes advanced functions for statistics, physics, and mathematics, alongside common calculations and unit conversions.
- Extended precision (30+ digits)
- Extended memory (main + 10 auxiliary)
- Scroll windows for button access
- Statistical calculations
- Physical and mathematical constants
- Unit conversions
- Roots of equations
- Special relativity calculations
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"Extended" scientific calculator has more features than typical calculators, including: • Extended precision (30+ digits), twice that of typical calculators. • Extended memory including a main memory with statistical information, and 10 auxiliary memory values. • Extended space for buttons using scroll windows--no confusing modes and function keys. • Extended functions not found on most calculators including (but not limited to): ◇ Statistical information for calculating standard deviation (tied to the M+ key) ◇ Most common physical constants and mathematical constants ◇ Extensive unit conversion constants ◇ Roots of polynomials and some transcendental equations ◇ Special relativity calculations • And normal functions including: ◇ Normal and hyperbolic trigonometry ◇ Various logs, powers and roots ◇ % calculations including interest and amortization ◇ Temperature conversion ◇ Random numbers ◇ Averages and means
Screenshots
Verdict
The clearest difference is price: Halcyon Calc Lite at Free against ExSciCalc's $1.99. Halcyon Calc Lite also leads on ratings volume (15 vs 1). ExSciCalc's advantage is in-app purchases (none vs 3) and ads (none vs shown). On 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
Halcyon Calc Lite is free to download; ExSciCalc costs $1.99 up front. Halcyon Calc Lite sells 3 one-off in-app purchases. ExSciCalc asks for nothing beyond the download.
ExSciCalc 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 point the same way: 67% of Halcyon Calc Lite's written reviews are positive against 100% of ExSciCalc's.
Halcyon Calc Lite ships an update every 3 months, ExSciCalc every 3 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | Halcyon Calc Lite | ExSciCalc |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.6 (15 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 15 — better | 1 |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Halcyon Touch Software | Dale C Koepp |
Customer experience
Halcyon Calc Lite
ExSciCalc
In-app purchases
Halcyon Calc Lite
- Directory And Unit Conversion Support$0.99
- Programming Support$1.99
- Larger Display Upgrade$1.99
ExSciCalc
No in-app purchases









