GetPrincipia vs Linear Algebra
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
GetPrincipia
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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
Linear Algebra
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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 โข Explore vectors in 2D and 3D โข Turn matrix columns into draggable handles โข See rotation, scale, shear, reflection, and composition happen live โข Understand determinants, inverse matrices, span, basis, and independence โข Discover eigenvectors by finding the directions a transformation cannot turn UNDERSTAND COMPUTER GRAPHICS โข Follow coordinates from object space to the screen โข Inspect model, view, and projection matrices โข Compare perspective and orthographic projection โข Learn cameras, frustums, lighting, normals, depth, blending, winding, and culling โข Experiment with Metal shader patterns using beginner-friendly visual controls LEARN BY DOING โข Guided lessons paired with the real interactive modules โข Always-visible formulas and plain-language symbol keys โข Sliders and direct manipulation instead of code-first controls โข Saved sandbox presets for returning to experiments โข Adaptive layouts for iPhone, iPad, Mac, and Apple Vision Pro โข 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
Verdict
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
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.
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.
| Parameter | GetPrincipia | Linear Algebra |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 days โ better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.1 โ better | 18.6 |
| Further details โ not scored | ||
| Size | 38 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Axiom 38 LLC | Mohammed Yussif |
In-app purchases
GetPrincipia
- Monthly7 Days trial$6.991 Month
- Annual7 Days trial$44.991 Year
Linear Algebra
- MatrixViz Pro Lifetime$44.99
Questions
Is GetPrincipia free?
Is Linear Algebra free?
Do GetPrincipia or Linear Algebra have ads?
Which is updated more often, GetPrincipia or Linear Algebra?
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