# MemoryForge vs 單字雪球

The clearest difference is ads: 單字雪球 at none against MemoryForge's shown. 單字雪球 also leads on update cadence (every 3 days vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. MemoryForge sells 4 in-app purchases, starting at $2.99 per month and 單字雪球 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

MemoryForge ships an update fortnightly, 單字雪球 every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | MemoryForge | 單字雪球 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6799845340/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | — | Free |
| Size | 27 MB | 33 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chen Chun Chang](https://appshunter.io/developer/1876567892) | [CHENG-LI CHANG](https://appshunter.io/developer/6799845342) |

## What reviewers say

### MemoryForge

[App page](https://appshunter.io/ios/app/memoryforge-flashcard-and-study/id6759056121)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MemoryForge Premium | $2.99 | per month |
| Premium Annual | $29.99 | per year |
| ai pack 50 | $2.99 | one-time |
| remove ad | $9.99 | one-time |


### 單字雪球

[App page](https://appshunter.io/ios/app/id6799845340)

This app uses spaced repetition to help you master difficult vocabulary. It features a built-in dictionary, multiple learning modes, and progress tracking. Designed for those who already know many words, it focuses on reinforcing what you struggle to remember.

**Highlights:** Spaced Repetition System (SRS), 18,000+ built-in word bank, Four learning modes (read, quiz, spell, sprint), Built-in Cambridge Dictionary, Progress sync via iCloud, No account, ads, or subscriptions

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 記憶線索 | $2.99 | one-time |


## Frequently asked questions

### Is MemoryForge free?

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

### Is 單字雪球 free?

單字雪球 is free to download, with in-app purchases available.

### Do MemoryForge or 單字雪球 have ads?

MemoryForge shows ads; 單字雪球 does not.

### Which is updated more often, MemoryForge or 單字雪球?

MemoryForge ships an update fortnightly, and 單字雪球 every 3 days. Most recently, MemoryForge was updated on October 24, 2026 and 單字雪球 on October 24, 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.*