# 錬成バトラー｜ガチャTD合体 vs Random Myth Defense

The clearest difference is in-app purchases: 錬成バトラー｜ガチャTD合体 at none against Random Myth Defense's 10. 錬成バトラー｜ガチャTD合体 also leads on iOS requirement (13.0 vs 18.0). Random Myth Defense's advantage is update cadence (every 2 days vs every 10 days). On price, ads and device support there is nothing between them.

Both are free to download. Random Myth Defense sells 10 one-off in-app purchases. 錬成バトラー｜ガチャTD合体 asks for nothing beyond the download.

錬成バトラー｜ガチャTD合体 ships an update every 10 days, Random Myth Defense every 2 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 錬成バトラー｜ガチャTD合体 | Random Myth Defense |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 10 days | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 506 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 9+ | 12+ |
| Developer | [Kosei Yoshimoto](https://appshunter.io/developer/1896691449) | [Gi Min Choi](https://appshunter.io/developer/1355995397) |

## What reviewers say

### 錬成バトラー｜ガチャTD合体

[App page](https://appshunter.io/ios/app/td/id6776305674)

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

**In-app purchases:** none


### Random Myth Defense

[App page](https://appshunter.io/ios/app/random-myth-defense/id6809278250)

Summon and merge legendary heroes to build a powerful defense against waves of enemies. Protect your Guardian Tower and embark on an epic adventure with mythical characters.

**Highlights:** Random hero summoning, Hero merging for power-ups, Guardian Tower defense, Variety of mythical heroes, Adventure mode

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Removal Pack | $3.99 | one-time |
| Monthly Pack | $3.99 | one-time |
| Stage Breakthrough Pack | $6.99 | one-time |
| Transcend Stone Pack | $6.99 | one-time |
| Rune Pack | $6.99 | one-time |
| Relic Pack | $6.99 | one-time |
| Premium Battle Pass | $6.99 | one-time |
| Premium Monthly Pack | $7.99 | one-time |
| Relic Choice Pack | $12.99 | one-time |
| Bulk Gold Pack | $19.99 | one-time |


## Frequently asked questions

### Is 錬成バトラー｜ガチャTD合体 free?

錬成バトラー｜ガチャTD合体 is free to download, with no in-app purchases.

### Is Random Myth Defense free?

Random Myth Defense is free to download, with in-app purchases available.

### Do 錬成バトラー｜ガチャTD合体 or Random Myth Defense have ads?

Both 錬成バトラー｜ガチャTD合体 and Random Myth Defense show ads.

### Which is updated more often, 錬成バトラー｜ガチャTD合体 or Random Myth Defense?

錬成バトラー｜ガチャTD合体 ships an update every 10 days, and Random Myth Defense every 2 days. Most recently, 錬成バトラー｜ガチャTD合体 was updated on October 28, 2026 and Random Myth Defense on October 29, 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.*