Visual Math 4D vs Cyber Kanji
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Visual Math 4D
Visualize and solve complex mathematical equations in 2D and 3D. Supports various equation types, vector fields, and animated variables. Ideal for students and engineers needing a powerful graphical calculator.
- Visualize 2D and 3D equations
- Plot and animate vector fields
- Support for polar, spherical, and parametric equations
- Complex function plotting
- Animate variables
- Offline functionality
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Visual Math 4D is a graphical calculator that allows you to visualize and solve your mathematical equations. It supports various types of equations, such as polar, spherical, parametric and implicit equations, which can be visualized and animated in 2D and 3D. You can also plot and animate vector fields in 2D and 3D. Features: - solve equations - plot cartesian functions with intersections - plot polar- and spherical functions - plot parametric equations in 2D and 3D - plot complex functions (draw real part & imaginary part) - plot vector fields in 2D and 3D - plot implicit equations in 2D and 3D - plot contour maps ins 2D and 3D - support for complex numbers - vectors & matrices - truth- and value tables - trigonometrical and hyperbolic functions - piecewise-defined functions - logarithmic functions - logical & binary operators - definite integral - n-th derivations - statistical functions (nPr, nCr, rand..) - physical and mathematical constants with their units - animate variables - share content with other apps - no network connection required - and a lot more The app is easy to use and helps students and engineers to visualize and solve their mathematical equations.
Cyber Kanji
Master Japanese kanji with a unique AI tutor that uses playful insults to motivate you. Choose between a fast-paced game mode or a comprehensive study mode covering all N5-N1 levels. Hear pronunciations and access detailed definitions for effective learning.
- AI-powered insults for motivation
- Game mode with leaderboards
- Study mode for N5-N1 kanji
- Kanji pronunciation audio
- Access to Jishoo dictionary definitions
- Customizable learning levels
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Ever notice that kanji apps are SUPER complicated? Radicals. Kun'yomi. On'yomi. Paragraphs and paragraphs of text. For beginners and intermediate learners, it's a bit too much! Cyber Kanji keeps it simple: see a kanji, hear a pronunciation, learn a meaning. Study in zen mode or race against the clock with techno music. Be warned: A snarky Japanese-speaking sensei insults you mercilessly while you learn. がんばって! GAME MODE • Jam out to techno music while you race the clock. • Gain more time with each correct answer and each game played. • Claim your spot on the Worldwide Leaderboard, ranked by Highest Scores and Longest Streaks! STUDY MODE • Tap the kanji card to hear its pronunciation. Tap again to reveal the kana and translation. • Star the words you've learned, shuffle the deck, and filter by level. • Pro tip: tap the translation for extra definitions, example sentences, and related kanji from the online Jishoo dictionary. AND MORE • Game stats to track your progress over time. • Lots of customizable settings: Light Mode / Dark Mode, Fonts, Sensei Mood, Haptic Feedback, and more. • Optional: Sign in to save progress and sync across devices. Made with love. Cyber Kanji has zero ads and will always be 100% free. (The only thing you can buy is a blinged-out キラキラ version of the in-game logo. Completely optional, but looks cool!) Learn your first 10 kanji today — your future self in Tokyo will thank you. P.S. While you're learning the kanji, come learn the kana and how to type on the Japanese 12-key flick keyboard with our sister app, Cyber Kana!
Screenshots
Verdict
The clearest difference is price: Cyber Kanji at Free against Visual Math 4D's $1.99. Cyber Kanji also leads on update cadence (weekly vs every 3 months) and rating (5.0 vs 4.6). Visual Math 4D's advantage is ratings volume (873 vs 1) and iOS requirement (10.0 vs 15.0). On ads, in-app purchases 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
Cyber Kanji is free to download; Visual Math 4D costs $1.99 up front. Visual Math 4D sells 3 one-off in-app purchases and Cyber Kanji sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Cyber Kanji holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Visual Math 4D has 873 ratings behind it against 1, so its average is the more settled of the two.
Visual Math 4D ships an update every 3 months, Cyber Kanji weekly. The most recent releases landed on October 11, 2026 and October 3, 2026 respectively.
| Parameter | Visual Math 4D | Cyber Kanji |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.6 (873 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 76.1% of reviews | — |
| Number of ratings | 873 — better | 1 |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 112 MB | 119 MB |
| Age rating | 4+ | 4+ |
| Developer | Ronny Weidemann | deLily Apps, Inc. |
Customer experience
Visual Math 4D
Cyber Kanji
Bugs and requests
Visual Math 4D
Reported bugs
4 issues- App crashes on opening
- Incorrect graph plotting of planes
- Scaling issues with 2D vector fields
- Calculator not functioning
Requested features
8 requests- Save button/menu to save equations
- Complex function plotting
- Slope field option for differential equations
- Unit vector scaling for 2D vector fields
- Undo button
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- Ability to add custom functions
- Ability to combine and scale multiple graphs
- Instructions and documentation
Cyber Kanji
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Visual Math 4D
- Coffee$0.99
- Cappuccino$1.99
- Sandwich$4.99
Cyber Kanji
- Gold Logo$4.99
Questions
Is Visual Math 4D free?
Is Cyber Kanji free?
Which has better reviews, Visual Math 4D or Cyber Kanji?
Do Visual Math 4D or Cyber Kanji have ads?
Which is updated more often, Visual Math 4D or Cyber Kanji?
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