# Visual Math 4D vs TimeToSkill

The clearest difference is price: TimeToSkill at Free against Visual Math 4D's $1.99. Visual Math 4D's advantage is iOS requirement (10.0 vs 18.2). On update cadence, ads, in-app purchases and device support there is nothing between them.

TimeToSkill is free to download; Visual Math 4D costs $1.99 up front. Visual Math 4D sells 3 one-off in-app purchases and TimeToSkill sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Visual Math 4D | TimeToSkill |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.6 (873 ratings)](https://appshunter.io/ios/app/visual-math-4d/id657441399/reviews)** | — |
| Number of ratings | **873** | — |
| Positive reviews | 76.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 112 MB | 7 MB |
| Requires iOS | **10.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ronny Weidemann](https://appshunter.io/developer/657441402) | [Grzegorz Kulesza](https://appshunter.io/developer/1746409831) |

## What reviewers say

### Visual Math 4D

[App page](https://appshunter.io/ios/app/visual-math-4d/id657441399)

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.

**Highlights:** Visualize 2D and 3D equations, Plot and animate vector fields, Support for polar, spherical, and parametric equations, Complex function plotting, Animate variables, Offline functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Cappuccino | $1.99 | one-time |
| Sandwich | $4.99 | one-time |

**What reviewers like**

- 🚀 Beautiful renderings
- 👍 Useful app
- 👍 Wonderful graphs and graphics
- 👍 Superior modeling tool
- 👍 Nice and easy to visualize

**What reviewers complain about**

- 🐛 App crashes and lost data
- 🐛 Unable to plot complex functions
- 🐛 Incorrect graph plotting
- 🐛 Scaling and range issues
- 🐛 Misleading app screenshots

**Reported bugs**

- App crashes on opening
- Incorrect graph plotting of planes
- Scaling issues with 2D vector fields
- Calculator not functioning

**Requested features**

- Save button/menu to save equations
- Complex function plotting
- Slope field option for differential equations
- Unit vector scaling for 2D vector fields
- Undo button


### TimeToSkill

[App page](https://appshunter.io/ios/app/timetoskill/id6744916976)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $1.99 | one-time |


## Frequently asked questions

### Is Visual Math 4D free?

Visual Math 4D costs $1.99, and also offers in-app purchases.

### Is TimeToSkill free?

TimeToSkill is free to download, with in-app purchases available.

### Do Visual Math 4D or TimeToSkill have ads?

Neither Visual Math 4D nor TimeToSkill shows ads.

### Which is updated more often, Visual Math 4D or TimeToSkill?

Visual Math 4D ships an update every 3 months, and TimeToSkill every 3 months. Most recently, Visual Math 4D was updated on October 7, 2026 and TimeToSkill on October 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*