# VocPass vs 單字雪球

The clearest difference is in-app purchases: VocPass at none against 單字雪球's 1. 單字雪球's advantage is update cadence (every 4 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 單字雪球 sells 1 one-off in-app purchase. VocPass asks for nothing beyond the download.

VocPass ships an update every 2 weeks, 單字雪球 every 4 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | VocPass | 單字雪球 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/7000/id6799845340/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | — | Free |
| Size | 7 MB | 34 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Very Fast Network LTD](https://appshunter.io/developer/1882186629) | [CHENG-LI CHANG](https://appshunter.io/developer/6799845342) |

## What reviewers say

### VocPass

[App page](https://appshunter.io/ios/app/vocpass/id6760000951)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### 單字雪球

[App page](https://appshunter.io/ios/app/7000/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 VocPass free?

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

### Is 單字雪球 free?

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

### Do VocPass or 單字雪球 have ads?

Neither VocPass nor 單字雪球 shows ads.

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

VocPass ships an update every 2 weeks, and 單字雪球 every 4 days. Most recently, VocPass was updated on October 31, 2026 and 單字雪球 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.*