PocketCAS lite for Mathematics vs functionCalculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PocketCAS lite for Mathematics
This advanced math application assists with a wide range of mathematical problems, from basic arithmetic to calculus, algebra, and statistics. It functions as a graphing calculator replacement, aids in homework, and supports complex calculations for academic and professional use.
- 2D and 3D plotting
- Calculus functions (limits, derivatives)
- Linear algebra operations
- Equation solving
- Scripting language
- Physical units and constants
- iCloud sync
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PocketCAS Lite is a graphing calculator for iPhone and iPad. It graphs your functions, finds derivatives and works with exact fractions and roots. Everything runs on your device, so it works without internet or an account. Graphs - 2D plots of functions, implicit equations, polar and parametric curves and vector fields, two functions per plot. PocketCAS marks zeros, extrema and intersections. In full screen, tap a mark to read its coordinates. - 3D surfaces with soft light and shading. Drag to turn them, pinch to zoom. Derivatives - Under each function, a suggestion shows its derivative, already worked out, and a small plot sits beside the result. Tap one to add it to your document. - Exact derivatives of products, quotients, roots and chains, written the way your textbook writes them. Exact results - Arithmetic with exact fractions and roots, trigonometric, exponential and logarithmic functions. - Matrices: determinants, inverses and products. - Your own functions, with conditions and recursion. - Common units and physical constants. Reads like your textbook - Results look the way they do in a textbook: fractions, roots, powers and matrices. - A math keyboard with every function in reach, and a hint shows what goes between the brackets. Made for daily work - Documents keep your calculations and plots together, and iCloud syncs them between your devices. - Export and print plots, entries or whole documents (with a PocketCAS Lite watermark). - Help built in: the function reference explains every function with examples, and tutorials get you started. More with PocketCAS Pro PocketCAS Pro is a separate app. It adds calculation steps that name the rule behind each step, integrals, limits, series and sums, equation and system solving, factoring and simplifying, eigenvalues, differential equations, scripts, plots with more than two functions, imports of documents and CSV data, larger matrices in the editor, exports without a watermark, and suggestions with zeros, extrema and integrals. The function reference in Lite marks the functions of Pro with a PRO badge. Questions or ideas? Write to us at https://pocketcas.com/support.
functionCalculator
This app calculates the value of mathematical functions y = f(x) for various types of numbers, including irrational ones. It displays results as exact fractions with square roots and can convert them to decimals. The app also supports calculations involving two different input values, alpha and beta.
- Calculate function values for any number type
- Display results as exact fractions
- Convert results to decimal
- Perform operations on two input values
- Supports irrational numbers
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Calculate the value of the mathematical function y = f (x). It is possible to assign to x any integer, rational number, irrational number. For example, you can assign square root 2 to x. It is not necessary to fix it to decimal. The calculation result is output in the form of a fraction using square root. It is exactly the same as math calculations. You can also convert the result to decimal. Calculate the values of f (α) and f (β) for two kinds of values, x = α and x = β, and f (α) + f (β), f (α) - f ), F (α) * f (β), f (α) / f (β) can also be calculated.
Screenshots
Verdict
The clearest difference is ads: PocketCAS lite for Mathematics at none against functionCalculator's shown. PocketCAS lite for Mathematics also leads on rating (4.6 vs 4.3) and ratings volume (204 vs 6). functionCalculator's advantage is iOS requirement (10.3 vs 18.0). On price, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
PocketCAS lite for Mathematics holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: PocketCAS lite for Mathematics has 204 ratings behind it against 6, so its average is the more settled of the two.
PocketCAS lite for Mathematics ships an update every 3 months, functionCalculator every 11 months. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.
| Parameter | PocketCAS lite for Mathematics | functionCalculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (204 ratings) — better | 4.3 (6 ratings) |
| Positive reviews | 90.8% of reviews | — |
| Number of ratings | 204 — better | 6 |
| Update frequency | Every 3 months — better | Every 11 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.0 | 10.3 — better |
| Further details — not scored | ||
| Size | 41 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Timing Software GmbH | Jirou Fukuda |
Customer experience
PocketCAS lite for Mathematics
functionCalculator
Bugs and requests
PocketCAS lite for Mathematics
Reported bugs
6 issues- App crashes when loading previously saved documents
- Crashes with no error feedback or debugging information
- Cannot plot certain mathematical functions
- Zoom scaling issues with 3D graphs (scales Z-axis incorrectly)
- Compatibility broken with iOS 6 after iOS 7 update
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- Function plotting limitations for advanced equations
Requested features
8 requests- Dark theme/dark mode for UI
- Multiple polynomials on single graph
- Inverse button functionality
- Better zoom functionality for 3D graphs
- Improved documentation and tutorials
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- More Greek characters support
- Measurement conversion capabilities
- Better control layout and cleanup
functionCalculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
PocketCAS lite for Mathematics
No in-app purchases
functionCalculator
No in-app purchases
Questions
Is PocketCAS lite for Mathematics free?
Is functionCalculator free?
Which has better reviews, PocketCAS lite for Mathematics or functionCalculator?
Do PocketCAS lite for Mathematics or functionCalculator have ads?
Which is updated more often, PocketCAS lite for Mathematics or functionCalculator?
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