# 研大医题库 vs 小绿鲸英文文献阅读器（平板）

The clearest difference is in-app purchases: 小绿鲸英文文献阅读器（平板） at none against 研大医题库's 9. 研大医题库's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.1). On price, update cadence and device support there is nothing between them.

Both are free to download. 研大医题库 sells 9 one-off in-app purchases. 小绿鲸英文文献阅读器（平板） asks for nothing beyond the download.

研大医题库 ships an update every 4 weeks, 小绿鲸英文文献阅读器（平板） every 6 weeks. The most recent releases landed on September 19, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 研大医题库 | 小绿鲸英文文献阅读器（平板） |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.5 (2 ratings)](https://appshunter.io/ios/app/id6450911529/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 4 weeks** | Every 6 weeks |
| Size | 275 MB | 84 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Beijing Haidian Research University TrainingSchool](https://appshunter.io/developer/1551767960) | [Jian Jing Technology (nanjing) Co.,Ltd](https://appshunter.io/developer/1695096543) |

## What reviewers say

### 研大医题库

[App page](https://appshunter.io/ios/app/id1537346151)

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6元=6库币 | $0.99 | one-time |
| 60元=60库币 | $8.99 | one-time |
| 88元=88库币 | $12.99 | one-time |
| 128元=128个库币 | $19.99 | one-time |
| 188元=188库币 | $27.99 | one-time |
| 288元=288库币 | $45.99 | one-time |
| 488元=488库币 | $74.99 | one-time |
| 698元=698库币 | $109.99 | one-time |
| 998元=998库币 | $149.99 | one-time |


### 小绿鲸英文文献阅读器（平板）

[App page](https://appshunter.io/ios/app/id6450911529)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 研大医题库 free?

研大医题库 is free to download, with in-app purchases available.

### Is 小绿鲸英文文献阅读器（平板） free?

小绿鲸英文文献阅读器（平板） is free to download, with no in-app purchases.

### Do 研大医题库 or 小绿鲸英文文献阅读器（平板） have ads?

小绿鲸英文文献阅读器（平板） shows ads; 研大医题库 does not.

### Which is updated more often, 研大医题库 or 小绿鲸英文文献阅读器（平板）?

研大医题库 ships an update every 4 weeks, and 小绿鲸英文文献阅读器（平板） every 6 weeks. Most recently, 研大医题库 was updated on September 19, 2026 and 小绿鲸英文文献阅读器（平板） on September 15, 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.*