Comparison

Linear Algebra Visualizer vs =42

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

Head to head
About

Linear Algebra Visualizer

This app helps you understand linear algebra by visualizing matrix transformations. It shows the step-by-step math behind transformations, allowing you to build visual intuition and see how matrices work.

Highlights
  • Visualize matrix transformations
  • Understand step-by-step math
  • Build visual intuition
  • See effect of TRS order
  • Explore eigenvectors and eigenvalues
  • Manipulate transformations
Features
Read full description

Ever wondered what a matrix is really doing? Whether you're learning it yourself or teaching students who are stuck, this app lets you visualise and manipulate matrix transformations, so you can finally see how and why they work. WHY IT CLICKS Most apps show you the answer. This one shows you why. The columns of a matrix are just where the basis vectors î and ĵ land. Column one is red. Column two is green. Follow those colors from your input, through the transformed vectors, into the step-by-step math. One number, traced all the way to its effect. With Linear Algebra Visualizer you: - Can finally build the visual intuition of linear algebra - Understand the math behind each transformation - Visually see why TRS order matters - Understand the effect of adding multiple matrices and translations - Watch eigenvectors and eigenvalues come alive BUILT FOR - Students surviving their first linear algebra course - Graphics programmers who want intuition, not just formulas - Teachers who need a live demo that lands - Anyone who's stared at a matrix and thought "but why does this work?" - Visual thinkers who've struggled to picture it all in their head Stop memorizing matrices. Start seeing them. Download Linear Algebra Vizualiser: Rotate, Scale, Shear, Reflect, Translate and learn to understand transformations visually. Ever wondered what a matrix is really doing? Whether you're learning it yourself or teaching students who are stuck, this app lets you visualise and manipulate matrix transformations, so you can finally see how and why they work. WHY IT CLICKS Most apps show you the answer. This one shows you why. The columns of a matrix are just where the basis vectors î and ĵ land. Column one is red. Column two is green. Follow those colours from your input, through the transformed vectors, into the step-by-step math. One number, traced all the way to its effect. With Linear Algebra Visualiser you: - Can finally build the visual intuition of linear algebra - Understand the math behind each transformation - Visually see why TRS order matters - Understand the effect of adding multiple matrices and translations - Watch eigenvectors and eigenvalues come alive BUILT FOR - Students surviving their first linear algebra course - Graphics programmers who want intuition, not just formulas - Teachers who need a live demo that lands - Anyone who's stared at a matrix and thought "but why does this work?" - Visual thinkers who've struggled to picture it all in their head Stop memorising matrices. Start seeing them. Download Linear Algebra Visualiser: Rotate, Scale, Shear, Reflect, Translate and learn to understand transformations visually. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

=42

Features
Read full description

A quiet three minutes with your kid. =42 picks tonight's twelve multiplication facts from where they're shakiest, then steps back — you read each fact, listen to the answer, swipe. That's the whole app. WHY IT'S DIFFERENT We pick the queue, not you. A small spaced-repetition scheduler weights what's wrong-most-recent first, then what's never-yet-seen, then a handful of facts they've already learned, so practice is never empty. After tonight, the deck restocks itself for tomorrow. The kid never sees a score. Each card is just the next question. When they miss, the fact comes back tomorrow. No streaks, no stars, no sad faces — just the gradual feeling of "I know more than I did last week." THE LOOP → Open =42. Tonight's twelve facts are already chosen. → Read the fact: "Six times seven?" → They answer. → Swipe right if they knew it, left if they missed it. → After twelve facts: "9 of 12. Sharper." and you're done. About three minutes a session. CALMLY BUILT — Coverage map — an 11×11 grid colored by mastery, so you can see which corner of the table they own. — Practice calendar — every session counted, no gamification, just your record. — Optional voice — flip the speaker icon to have the app read each fact aloud (off by default, respects your phone's silent switch). — Long-press to drill — hold any fact in the coverage map and tonight's session starts with it. PRIVACY Everything stays on your device. No account, no sign-in, no kid profile in the cloud. The only data we send out is anonymous usage analytics and crash diagnostics — both opt-out at the OS level. Made for parents and grandparents who'd rather sit beside their kid than hand them a tablet. Designed for ages 7+ working through times tables; the parent stays in control of every session.

Screenshots

Linear Algebra Visualizer4 screens
=424 screens

Verdict

The call

The clearest difference is in-app purchases: =42 at none against Linear Algebra Visualizer's 3. On price, update cadence, 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

Both are free to download. Linear Algebra Visualizer sells 3 in-app purchases, starting at $4.99 per month. =42 asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 3, 2026 and September 27, 2026 respectively.

Scorecard1 real difference · 8 level
Linear Algebra Visualizer versus =42: the parameters behind the verdict, then further details
ParameterLinear Algebra Visualizer=42
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS18.617.0 — better
Further details — not scored
Size12 MB6 MB
Age rating4+4+
DeveloperNiclas JeppssonMaksym Kolotii

In-app purchases

3 purchases

Linear Algebra Visualizer

Subscriptions2
  • Pro7 Days trial$4.991 Month
  • Pro7 Days trial$34.991 Year
One-time1
  • Pro$99.99
None

=42

No in-app purchases

Questions

Is Linear Algebra Visualizer free?
Linear Algebra Visualizer is free to download, with in-app purchases available.
Is =42 free?
=42 is free to download, with no in-app purchases.
Do Linear Algebra Visualizer or =42 have ads?
Neither Linear Algebra Visualizer nor =42 shows ads.
Which is updated more often, Linear Algebra Visualizer or =42?
Linear Algebra Visualizer ships an update every 2 weeks, and =42 every 2 weeks. Most recently, Linear Algebra Visualizer was updated on October 3, 2026 and =42 on September 27, 2026.

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