Comparison

PocketCAS vs Trigonometry Formulas

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

Head to head
About

PocketCAS

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.

Highlights
  • 2D and 3D plotting
  • Calculus functions (limits, derivatives)
  • Linear algebra operations
  • Equation solving
  • Scripting language
  • Physical units and constants
  • iCloud sync
Features
Read full description

PocketCAS 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. An in-app purchase unlocks PocketCAS Pro, with steps, integrals and the solver. 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 watermark). - Help built in: the function reference explains every function with examples, and tutorials get you started. Unlock PocketCAS Pro One purchase in the app unlocks everything in PocketCAS Pro, without a subscription: 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. Family Sharing is included, and Restore Purchases is in the main menu. Until you unlock it, the function reference marks the functions of Pro with a PRO badge. PocketCAS Pro is also sold as its own app; you need only one. Questions or ideas? Write to us at https://pocketcas.com/support. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://pocketcas.com/privacy.php

About

Trigonometry Formulas

Access a comprehensive collection of trigonometry formulas, including ratios, functions, standard angle values, and identities. This app covers basic to advanced topics like inverse circular functions and properties of triangles, serving as a handy reference for students and enthusiasts.

Highlights
  • Trigonometric Ratios and Functions
  • Basic Trigonometric Formulas
  • Standard Angle Values
  • Quadrant Rules of Signs
  • Addition and Subtraction Formulas
  • Inverse Circular Functions
  • Properties of Triangles
Features
Read full description

Contents :- 1.Trigonometric Ratios and Functions 2. Basic Trigonometric Formula 3. Values of Trigonometric Ratios for Standard Angles 4. Quadrant Rules Of Signs 5 .Range of Trigonometric Functions 6. Addition and Subtraction Formula 7. Double, Half and Triple angle Formula 8.Transformation Formula 9. Conditional Identities (when A+B+C = π) 10. Properties of Triangles 11.Inverse Circular Functions 12. Trigonometric Equations and General Values 13.Cosine law,Sine law,Projection law,Half angle Formula,Miscellaneous results 14. Domain and Ranges of Inverse Circular Functions,Important relations on inverse circular Functions

Screenshots

PocketCAS4 screens
Trigonometry Formulas4 screens

Verdict

The call

The clearest difference is price: PocketCAS at Free against Trigonometry Formulas's $0.99. PocketCAS also leads on ratings volume (204 vs 2) and update cadence (every 3 months vs every 10 months). Trigonometry Formulas's advantage is in-app purchases (none vs 1) and rating (5.0 vs 4.6). On 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

PocketCAS is free to download; Trigonometry Formulas costs $0.99 up front. PocketCAS sells 1 one-off in-app purchase. Trigonometry Formulas asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Trigonometry Formulas holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: PocketCAS has 204 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 91% of PocketCAS's written reviews are positive against 100% of Trigonometry Formulas's.

UpkeepUpdate frequency

PocketCAS ships an update every 3 months, Trigonometry Formulas every 10 months. The most recent releases landed on October 23, 2026 and October 2, 2026 respectively.

Scorecard8 real differences · 2 level
PocketCAS versus Trigonometry Formulas: the parameters behind the verdict, then further details
ParameterPocketCASTrigonometry Formulas
PriceFree — better$0.99
Rating4.6 (204 ratings)5.0 (2 ratings) — better
Positive reviews90.8% of reviews100.0% of reviews — better
Number of ratings204 — better2
Update frequencyEvery 3 months — betterEvery 10 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree — betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.013.0 — better
Further details — not scored
Size42 MB27 MB
Age rating4+4+
DeveloperTiming Software GmbHRanjeet Kumar

Customer experience

PocketCAS

All ratings204 ratings
Positive91.7%
Neutral4.9%
Negative3.4%
Written reviews152 reviews
Positive90.8%
Neutral1.3%
Negative7.9%

Trigonometry Formulas

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

PocketCAS

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
Show 1 more
  • 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
Show 3 more
  • More Greek characters support
  • Measurement conversion capabilities
  • Better control layout and cleanup

Trigonometry Formulas

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

PocketCAS

One-time1
  • PocketCAS Pro$29.99
None

Trigonometry Formulas

No in-app purchases

Questions

Is PocketCAS free?
PocketCAS is free to download, with in-app purchases available.
Is Trigonometry Formulas free?
Trigonometry Formulas costs $0.99, with no in-app purchases.
Which has better reviews, PocketCAS or Trigonometry Formulas?
Trigonometry Formulas is rated higher. PocketCAS averages 4.6 out of 5 from 204 ratings, while Trigonometry Formulas averages 5.0 from 2 ratings.
Do PocketCAS or Trigonometry Formulas have ads?
Neither PocketCAS nor Trigonometry Formulas shows ads.
Which is updated more often, PocketCAS or Trigonometry Formulas?
PocketCAS ships an update every 3 months, and Trigonometry Formulas every 10 months. Most recently, PocketCAS was updated on October 23, 2026 and Trigonometry Formulas on October 2, 2026.

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