# Summer Reading Challenge 2026 vs METS词根记

The clearest difference is in-app purchases: Summer Reading Challenge 2026 at none against METS词根记's 2. Summer Reading Challenge 2026 also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price and ads there is nothing between them.

Both are free to download. METS词根记 sells 2 in-app purchases, starting at $9.99 per month. Summer Reading Challenge 2026 asks for nothing beyond the download.

## The numbers

| Metric | Summer Reading Challenge 2026 | METS词根记 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 10 MB | 263 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hiedi Moorman](https://appshunter.io/developer/6773404971) | [Hefei Mingmo Information Technology Co., Ltd.](https://appshunter.io/developer/6811739909) |

## What reviewers say

### Summer Reading Challenge 2026

[App page](https://appshunter.io/ios/app/summer-reading-challenge-2026/id6773404969)

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

**In-app purchases:** none


### METS词根记

[App page](https://appshunter.io/ios/app/mets/id6811740247)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $9.99 | per month |
| Annual Premium | $39.99 | per year |


## Frequently asked questions

### Is Summer Reading Challenge 2026 free?

Summer Reading Challenge 2026 is free to download, with no in-app purchases.

### Is METS词根记 free?

METS词根记 is free to download, with in-app purchases available.

### Do Summer Reading Challenge 2026 or METS词根记 have ads?

Neither Summer Reading Challenge 2026 nor METS词根记 shows ads.

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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.*