Comparison

GetPrincipia vs Linear Algebra

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

Head to head
About

GetPrincipia

Features
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Unlocking mathematical concepts with visuals, practice, progress tracking, study guides, and linking disciplines and topics across the field. Terms of Use: https://getprincipia.com/terms Privacy Policy: https://getprincipia.com/privacy

About

Linear Algebra

Features
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MatrixViz makes linear algebra and computer graphics understandable by turning the maths into interactive visuals. Built for complete beginners, MatrixViz lets you drag vectors, reshape matrices, move cameras, adjust projections, and immediately see what each formula does. Every learning module connects a plain-language idea to a guided experiment, a live visual, the underlying equation, and a symbol-by-symbol explanation. LEARN LINEAR ALGEBRA VISUALLY โ€ข Explore vectors in 2D and 3D โ€ข Turn matrix columns into draggable handles โ€ข See rotation, scale, shear, reflection, and composition happen live โ€ข Understand determinants, inverse matrices, span, basis, and independence โ€ข Discover eigenvectors by finding the directions a transformation cannot turn UNDERSTAND COMPUTER GRAPHICS โ€ข Follow coordinates from object space to the screen โ€ข Inspect model, view, and projection matrices โ€ข Compare perspective and orthographic projection โ€ข Learn cameras, frustums, lighting, normals, depth, blending, winding, and culling โ€ข Experiment with Metal shader patterns using beginner-friendly visual controls LEARN BY DOING โ€ข Guided lessons paired with the real interactive modules โ€ข Always-visible formulas and plain-language symbol keys โ€ข Sliders and direct manipulation instead of code-first controls โ€ข Saved sandbox presets for returning to experiments โ€ข Adaptive layouts for iPhone, iPad, Mac, and Apple Vision Pro โ€ข Light and dark appearance options MATRIXVIZ PRO Optional MatrixViz Pro unlocks iCloud lesson-progress sync, educator presentation mode, and 1080p matrix-animation export across supported Apple platforms. MatrixViz Pro Monthly and MatrixViz Pro Yearly are auto-renewable subscriptions. Payment is charged to your Apple Account when the purchase is confirmed. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. You can manage or cancel subscriptions in Apple Account Settings. MatrixViz Pro Lifetime is a one-time purchase and does not renew. Prices vary by storefront. Privacy Policy: https://docs.google.com/document/d/1pWwcNOmDiuzImLw2JztnpJbhKFnS7unBt5iFSJZcz2w/edit?usp=sharing Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: codedspartant@gmail.com

Screenshots

GetPrincipia4 screens
Linear Algebra4 screens

Verdict

The call

The clearest difference is update cadence: Linear Algebra at every 2 days against GetPrincipia's every 2 months. GetPrincipia's advantage is iOS requirement (15.1 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. GetPrincipia sells 2 in-app purchases, starting at $6.99 per month and Linear Algebra sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

GetPrincipia ships an update every 2 months, Linear Algebra every 2 days. The most recent releases landed on September 14, 2026 and September 7, 2026 respectively.

Scorecard2 real differences ยท 4 level
GetPrincipia versus Linear Algebra: the parameters behind the verdict, then further details
ParameterGetPrincipiaLinear Algebra
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 days โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.1 โ€” better18.6
Further details โ€” not scored
Size38 MB21 MB
Age rating4+4+
DeveloperAxiom 38 LLCMohammed Yussif

In-app purchases

2 purchases

GetPrincipia

Subscriptions2
  • Monthly7 Days trial$6.991 Month
  • Annual7 Days trial$44.991 Year
1 purchases

Linear Algebra

One-time1
  • MatrixViz Pro Lifetime$44.99

Questions

Is GetPrincipia free?
GetPrincipia is free to download, with in-app purchases available.
Is Linear Algebra free?
Linear Algebra is free to download, with in-app purchases available.
Do GetPrincipia or Linear Algebra have ads?
Neither GetPrincipia nor Linear Algebra shows ads.
Which is updated more often, GetPrincipia or Linear Algebra?
GetPrincipia ships an update every 2 months, and Linear Algebra every 2 days. Most recently, GetPrincipia was updated on September 14, 2026 and Linear Algebra on September 7, 2026.

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