Comparison

BitSpinner vs EigenAlpha

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

Head to head
About

BitSpinner

Features
Read full description

Spinner makes quantum intuition visual, interactive, and fun. Explore a live Bloch sphere, drag to rotate and pan, and apply quantum gates instantly to see how a qubit evolves in real time. Spinner shows both geometric motion and state notation side by side, so you can connect what you see to what the math means. Built for iPhone and iPad, Spinner combines a clean control surface with a moody, immersive 3D scene to help you learn, teach, and experiment. Real-time Bloch sphere interaction Instant gate application (X, Y, Z, H, S, T, and more) Live Ξ±/Ξ² state readouts in multiple forms Smooth camera controls and polished visual modes Great for students and educators

About

EigenAlpha

Features
Read full description

EigenAlpha: Linear Algebra Core Skills Training Unlock the visual and spatial power of Linear Algebra. EigenAlpha is an interactive learning console designed for university students, engineers, and machine learning enthusiasts who want to develop a deep, intuitive, and mathematical grasp of vector spaces, matrices, and linear mappings. Skip rote memorization. EigenAlpha combines structured curriculum progression with stunning visual diagnostics to help you bridge the gap between abstract equations and geometric transformations. KEY FEATURES: Structured Course Progression: Move step-by-step through core Linear Algebra unitsβ€”from basis vector spans and matrix dimensions to QR decompositions, eigenvalues, and Gram-Schmidt orthogonalization. Macro Skill Diagnostics: View your real-time accuracy across 6 core mathematical domains, including Matrix Arithmetic, Algorithmic Reduction (Gaussian Elimination), Spectral Decomposition, and Invariant Inspection. Applied Crossover Case Studies: Explore how abstract matrix concepts drive state-of-the-art modern technologies. Follow step-by-step reasoning progressions for real-world scenarios, including Google PageRank spectral convergence. Conceptual Diagrams & Pitfalls: Review custom high-contrast visuals mapping out transformations and eigenvalues. Learn to bypass common pitfalls and exam tips carefully curated by math researchers. Reset & Restore Control: Maintain full command over your learning log. Reset diagnostic progress to re-test your accuracy, and easily restore premium license entitlements across all your iOS devices. Accessibility Integrated: Fully optimized for Dynamic Type font scaling and screen reader VoiceOver narration. WHO IS IT FOR? - STEM Undergrads: Excel in college-level Linear Algebra courses and diagnostic exams. - AI & Machine Learning Developers: Understand the vector transformations, dimension spaces, and spectral decomposition behind neural networks and PCA. - 3D Developers & Graphics Engineers: Master translation, rotation, and projection matrices.

Screenshots

BitSpinner3 screens
EigenAlpha4 screens

Verdict

The call

The clearest difference is in-app purchases: BitSpinner at none against EigenAlpha's 1. On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. EigenAlpha sells 1 one-off in-app purchase. BitSpinner asks for nothing beyond the download.

Scorecard1 real difference Β· 5 level
BitSpinner versus EigenAlpha: the parameters behind the verdict, then further details
ParameterBitSpinnerEigenAlpha
PriceFreeFree
Update frequencyEvery 4 monthsβ€”
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.0 β€” better26.2
Further details β€” not scored
Size8 MB7 MB
Age rating4+4+
DeveloperRobert LisJT Scientific Consulting LLC

In-app purchases

None

BitSpinner

No in-app purchases

1 purchases

EigenAlpha

One-time1
  • Premium Unlock$12.99

Questions

Is BitSpinner free?
BitSpinner is free to download, with no in-app purchases.
Is EigenAlpha free?
EigenAlpha is free to download, with in-app purchases available.
Do BitSpinner or EigenAlpha have ads?
Neither BitSpinner nor EigenAlpha shows ads.

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