# 常春藤核心英文字彙 vs SubFit

The clearest difference is price: SubFit at Free against 常春藤核心英文字彙's $3.99. SubFit also leads on update cadence (every 10 days vs every 2 months). 常春藤核心英文字彙's advantage is iOS requirement (9.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

SubFit is free to download; 常春藤核心英文字彙 costs $3.99 up front. 常春藤核心英文字彙 sells 1 one-off in-app purchase and SubFit sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

常春藤核心英文字彙 ships an update every 2 months, SubFit every 10 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 常春藤核心英文字彙 | SubFit |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[2.5 (4 ratings)](https://appshunter.io/ios/app/id767364550/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Size | 264 MB | 13 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Otek International Inc.](https://appshunter.io/developer/318583126) | [Cheng-Gang Wang](https://appshunter.io/developer/6790284003) |

## What reviewers say

### 常春藤核心英文字彙

[App page](https://appshunter.io/ios/app/id767364550)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 「常春藤核心英文字彙 2251-4500 加值包」 | $2.99 | one-time |


### SubFit

[App page](https://appshunter.io/ios/app/subfit/id6790284001)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SubFit Plus 會員 | $1.99 | per month |
| SubFit Pro 會員 | $3.99 | per month |


## Frequently asked questions

### Is 常春藤核心英文字彙 free?

常春藤核心英文字彙 costs $3.99, and also offers in-app purchases.

### Is SubFit free?

SubFit is free to download, with in-app purchases available.

### Do 常春藤核心英文字彙 or SubFit have ads?

Neither 常春藤核心英文字彙 nor SubFit shows ads.

### Which is updated more often, 常春藤核心英文字彙 or SubFit?

常春藤核心英文字彙 ships an update every 2 months, and SubFit every 10 days. Most recently, 常春藤核心英文字彙 was updated on October 23, 2026 and SubFit on October 24, 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.*