# Visual Physics vs Ka

The clearest difference is rating: Ka at 5.0 against Visual Physics's 4.3. Ka also leads on in-app purchases (none vs 9). Visual Physics's advantage is ratings volume (8 vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Visual Physics sells 9 one-off in-app purchases. Ka asks for nothing beyond the download.

Ka holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Visual Physics has 8 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Visual Physics | Ka |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (8 ratings)](https://appshunter.io/ios/app/visual-physics/id1618428816/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kaching/id6736558803/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 73.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 64 MB | 4 MB |
| Requires iOS | 15.6 | **15.5** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NLYTN LEARNING SYSTEMS PRIVATE LIMITED](https://appshunter.io/developer/1618428818) | [Yifan Du](https://appshunter.io/developer/1245978670) |

## What reviewers say

### Visual Physics

[App page](https://appshunter.io/ios/app/visual-physics/id1618428816)

Master physics with animated videos and interactive problem-solving tools. This app simplifies complex concepts for students preparing for competitive exams or anyone wanting a deeper understanding of physics.

**Highlights:** 2500+ Animated Physics Videos, 4500+ Problems with Solutions, Structured Learning Path, Interactive Problem-Solving, Visual Tricks for Faster Solving, Conceptual Clarifications

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Day Full Course Trial | $0.99 | one-time |
| 3 Months - Super Offer | $1.99 | one-time |
| 1 Year - Mega Offer | $9.99 | one-time |
| 6 Months - Target 2024 | $12.99 | one-time |
| 6 Months - Super Sale | $14.99 | one-time |
| 1 Year - Super Saver | $14.99 | one-time |
| 1 Year - Target 2024 | $19.99 | one-time |
| 1 Year - English Only | $19.99 | one-time |
| 1 Year - Super Sale | $29.99 | one-time |


### Ka

[App page](https://appshunter.io/ios/app/kaching/id6736558803)

This educational app makes learning about economics and finance engaging for students. It features a quiz-based system where users earn virtual coins to practice stock trading in a simulated environment. The coins are purely for educational purposes and cannot be used in real-world transactions.

**Highlights:** Economics and finance education, Fun quiz-based learning, Virtual stock trading simulation, Earn virtual coins, Educational purpose only

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Visual Physics free?

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

### Is Ka free?

Ka is free to download, with no in-app purchases.

### Which has better reviews, Visual Physics or Ka?

Ka is rated higher. Visual Physics averages 4.3 out of 5 from 8 ratings, while Ka averages 5.0 from 1 ratings.

### Do Visual Physics or Ka have ads?

Neither Visual Physics nor Ka shows ads.

### Which is updated more often, Visual Physics or Ka?

Visual Physics ships an update monthly, and Ka monthly. Most recently, Visual Physics was updated on November 7, 2026 and Ka on October 30, 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.*