# QY STEM vs 快乐搭

QY STEM and 快乐搭 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | QY STEM | 快乐搭 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/qy-stem/id6444227932/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | Free | — |
| Size | 137 MB | 74 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [广东群宇互动科技有限公司](https://appshunter.io/developer/1019985641) | [福建佰育科技](https://appshunter.io/developer/1655475063) |

## What reviewers say

### QY STEM

[App page](https://appshunter.io/ios/app/qy-stem/id6444227932)

This offline programming application is designed for competitive programming. It offers a dedicated environment for users to practice and prepare for coding competitions.

**Highlights:** Offline programming environment, Competition preparation, Dedicated coding practice, Supports multiple devices

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

**In-app purchases:** none


### 快乐搭

[App page](https://appshunter.io/ios/app/id6447779173)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QY STEM free?

QY STEM is free to download, with no in-app purchases.

### Is 快乐搭 free?

快乐搭 is free to download, with no in-app purchases.

### Do QY STEM or 快乐搭 have ads?

Neither QY STEM nor 快乐搭 shows ads.

### Which is updated more often, QY STEM or 快乐搭?

QY STEM ships an update every 6 weeks, and 快乐搭 every 6 weeks. Most recently, QY STEM was updated on October 4, 2026 and 快乐搭 on October 1, 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.*