# 電光石火 vs Visualization Training

The clearest difference is in-app purchases: 電光石火 at none against Visualization Training's 1. 電光石火 also leads on iOS requirement (18.0 vs 26.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Visualization Training sells 1 one-off in-app purchase. 電光石火 asks for nothing beyond the download.

電光石火 ships an update every 2 weeks, Visualization Training weekly. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | 電光石火 | Visualization Training |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 8 MB | 21 MB |
| Requires iOS | **18.0** | 26.4 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yuta Koshizawa](https://appshunter.io/developer/990513991) | [Shingo Fukuyama](https://appshunter.io/developer/917557248) |

## What reviewers say

### 電光石火

[App page](https://appshunter.io/ios/app/id6743498354)

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

**In-app purchases:** none


### Visualization Training

[App page](https://appshunter.io/ios/app/visualization-training/id6788350226)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | one-time |


## Frequently asked questions

### Is 電光石火 free?

電光石火 is free to download, with no in-app purchases.

### Is Visualization Training free?

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

### Do 電光石火 or Visualization Training have ads?

Neither 電光石火 nor Visualization Training shows ads.

### Which is updated more often, 電光石火 or Visualization Training?

電光石火 ships an update every 2 weeks, and Visualization Training weekly. Most recently, 電光石火 was updated on October 11, 2026 and Visualization Training on October 12, 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.*