# 花火連鎖 vs ECHO LEGION

The clearest difference is in-app purchases: 花火連鎖 at none against ECHO LEGION's 10. ECHO LEGION's advantage is update cadence (every 2 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ECHO LEGION sells 10 in-app purchases, starting at $2.99 per month. 花火連鎖 asks for nothing beyond the download.

花火連鎖 ships an update monthly, ECHO LEGION every 2 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 花火連鎖 | ECHO LEGION |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/echo-legion/id6816213177/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 2 days** |
| Size | 9 MB | 104 MB |
| Requires iOS | 16.8 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Eiki Ogawa](https://appshunter.io/developer/1701253076) | [Tatsuya Maeda](https://appshunter.io/developer/6792676878) |

## What reviewers say

### 花火連鎖

[App page](https://appshunter.io/ios/app/id6779212726)

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

**In-app purchases:** none


### ECHO LEGION

[App page](https://appshunter.io/ios/app/echo-legion/id6816213177)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 盟約（月額） | $2.99 | per month |
| おかえりパック | $2.99 | one-time |
| 覇者を越えたパック | $2.99 | one-time |
| ECHO PASS 凍てつく残響 | $5.99 | one-time |
| PASS+ へのアップグレード ・ はじまりの共鳴 | $9.99 | one-time |
| PASS+ へのアップグレード ・ 凍てつく残響 | $9.99 | one-time |
| 結晶 ×1,680 | $11.99 | one-time |
| ECHO PASS+ 凍てつく残響 | $14.99 | one-time |
| 結晶 ×2,550 | $19.99 | one-time |
| 結晶 ×9,600 | $59.99 | one-time |


## Frequently asked questions

### Is 花火連鎖 free?

花火連鎖 is free to download, with no in-app purchases.

### Is ECHO LEGION free?

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

### Do 花火連鎖 or ECHO LEGION have ads?

Both 花火連鎖 and ECHO LEGION show ads.

### Which is updated more often, 花火連鎖 or ECHO LEGION?

花火連鎖 ships an update monthly, and ECHO LEGION every 2 days. Most recently, 花火連鎖 was updated on October 28, 2026 and ECHO LEGION on October 31, 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.*