# Ai智学 vs 4000基础必备英语单词2

The clearest difference is price: Ai智学 at Free against 4000基础必备英语单词2's $0.99. Ai智学 also leads on iOS requirement (13.0 vs 15.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Ai智学 is free to download; 4000基础必备英语单词2 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 2, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | Ai智学 | 4000基础必备英语单词2 |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 495 MB | 170 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [冕 李](https://appshunter.io/developer/1314239006) | [水生 王](https://appshunter.io/developer/1587470458) |

## What reviewers say

### Ai智学

[App page](https://appshunter.io/ios/app/ai/id1316844099)

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

**In-app purchases:** none


### 4000基础必备英语单词2

[App page](https://appshunter.io/ios/app/40002/id1640442459)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ai智学 free?

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

### Is 4000基础必备英语单词2 free?

4000基础必备英语单词2 costs $0.99, with no in-app purchases.

### Do Ai智学 or 4000基础必备英语单词2 have ads?

Neither Ai智学 nor 4000基础必备英语单词2 shows ads.

### Which is updated more often, Ai智学 or 4000基础必备英语单词2?

Ai智学 ships an update every 2 months, and 4000基础必备英语单词2 every 2 months. Most recently, Ai智学 was updated on September 2, 2026 and 4000基础必备英语单词2 on August 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.*