# 怪獸拼牆 Monster Spell vs AIoT Heart

The clearest difference is in-app purchases: AIoT Heart at none against 怪獸拼牆 Monster Spell's 5. AIoT Heart also leads on update cadence (every 2 months vs every 8 months). 怪獸拼牆 Monster Spell's advantage is iOS requirement (7.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. 怪獸拼牆 Monster Spell sells 5 one-off in-app purchases. AIoT Heart asks for nothing beyond the download.

怪獸拼牆 Monster Spell ships an update every 8 months, AIoT Heart every 2 months. The most recent releases landed on October 12, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 怪獸拼牆 Monster Spell | AIoT Heart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/monster-spell/id681696144/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 53 MB | 241 MB |
| Requires iOS | **7.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Taiwan Knowledge Bank Co., Ltd.](https://appshunter.io/developer/308770588) | [Jon-Chao Hong](https://appshunter.io/developer/547495524) |

## What reviewers say

### 怪獸拼牆 Monster Spell

[App page](https://appshunter.io/ios/app/monster-spell/id681696144)

Build and defend your castle by spelling English words correctly. Earn coins for correct answers to repair your walls, and use heroes to help you pass levels. Unlock more vocabulary to expand your word knowledge.

**Highlights:** Spell English words, Automatic word pronunciation, Chinese explanations, Earn coins to repair walls, Use heroes to pass levels, Unlock English word banks

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 小袋金幣 | $0.99 | one-time |
| 中袋金幣 | $1.99 | one-time |
| 大袋金幣 | $3.99 | one-time |
| 特大袋金幣 | $9.99 | one-time |
| 一堆金幣 | $14.99 | one-time |


### AIoT Heart

[App page](https://appshunter.io/ios/app/aiot-heart-attack/id6740808938)

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

**In-app purchases:** none


## Frequently asked questions

### Is 怪獸拼牆 Monster Spell free?

怪獸拼牆 Monster Spell is free to download, with in-app purchases available.

### Is AIoT Heart free?

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

### Do 怪獸拼牆 Monster Spell or AIoT Heart have ads?

Neither 怪獸拼牆 Monster Spell nor AIoT Heart shows ads.

### Which is updated more often, 怪獸拼牆 Monster Spell or AIoT Heart?

怪獸拼牆 Monster Spell ships an update every 8 months, and AIoT Heart every 2 months. Most recently, 怪獸拼牆 Monster Spell was updated on October 12, 2026 and AIoT Heart on October 28, 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.*