# 歷史真猶意思 vs 單字雪球

The clearest difference is in-app purchases: 歷史真猶意思 at none against 單字雪球's 1. 歷史真猶意思 also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 單字雪球 sells 1 one-off in-app purchase. 歷史真猶意思 asks for nothing beyond the download.

歷史真猶意思 ships an update every 5 days, 單字雪球 every 4 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 歷史真猶意思 | 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 5 days | **Every 4 days** |
| Monetization | — | Free |
| Size | 276 MB | 34 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LIN HSINJUNG](https://appshunter.io/developer/1808856523) | [CHENG-LI CHANG](https://appshunter.io/developer/6799845342) |

## What reviewers say

### 歷史真猶意思

[App page](https://appshunter.io/ios/app/id6744676053)

**Features:** macOS Compatibility

**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 歷史真猶意思 free?

歷史真猶意思 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 歷史真猶意思 or 單字雪球 have ads?

Neither 歷史真猶意思 nor 單字雪球 shows ads.

### Which is updated more often, 歷史真猶意思 or 單字雪球?

歷史真猶意思 ships an update every 5 days, and 單字雪球 every 4 days. Most recently, 歷史真猶意思 was updated on October 30, 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.*