# 知识贝壳 vs 联想背单词

The clearest difference is update cadence: 联想背单词 at every 9 days against 知识贝壳's every 6 weeks. 知识贝壳's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. 知识贝壳 sells 2 one-off in-app purchases and 联想背单词 sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

知识贝壳 ships an update every 6 weeks, 联想背单词 every 9 days. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 知识贝壳 | 联想背单词 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/id1591698684/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Size | 26 MB | 4 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [丹 祁](https://appshunter.io/developer/1580577229) | [玉美 辛](https://appshunter.io/developer/1700037509) |

## What reviewers say

### 知识贝壳

[App page](https://appshunter.io/ios/app/id1591698684)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP用户年费 | $15.99 | one-time |
| VIP会员年费 | $19.99 | one-time |


### 联想背单词

[App page](https://appshunter.io/ios/app/id6478444606)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 8元额度 | $0.99 | one-time |
| 28元额度 | $3.99 | one-time |
| 58元额度 | $7.99 | one-time |
| 88元额度 | $12.99 | one-time |
| 128元额度 | $19.99 | one-time |
| 198元额度 | $29.99 | one-time |
| 348元额度 | $49.99 | one-time |


## Frequently asked questions

### Is 知识贝壳 free?

知识贝壳 is free to download, with in-app purchases available.

### Is 联想背单词 free?

联想背单词 is free to download, with in-app purchases available.

### Do 知识贝壳 or 联想背单词 have ads?

Neither 知识贝壳 nor 联想背单词 shows ads.

### Which is updated more often, 知识贝壳 or 联想背单词?

知识贝壳 ships an update every 6 weeks, and 联想背单词 every 9 days. Most recently, 知识贝壳 was updated on October 18, 2026 and 联想背单词 on October 14, 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.*