# 電光石火 vs ShadowMark

電光石火 and ShadowMark are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

電光石火 ships an update every 2 weeks, ShadowMark every 8 days. The most recent releases landed on October 11, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 電光石火 | ShadowMark |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Size | 8 MB | 3 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yuta Koshizawa](https://appshunter.io/developer/990513991) | [RYUTA SHIMOGAUCHI](https://appshunter.io/developer/6775823754) |

## 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


### ShadowMark

[App page](https://appshunter.io/ios/app/shadowmark/id6775823482)

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

**In-app purchases:** none


## Frequently asked questions

### Is 電光石火 free?

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

### Is ShadowMark free?

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

### Do 電光石火 or ShadowMark have ads?

Neither 電光石火 nor ShadowMark shows ads.

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

電光石火 ships an update every 2 weeks, and ShadowMark every 8 days. Most recently, 電光石火 was updated on October 11, 2026 and ShadowMark on October 17, 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.*