# 钢琴家 vs Full Stack Interview

The clearest difference is price: 钢琴家 at Free against Full Stack Interview's $0.90. 钢琴家 also leads on in-app purchases (none vs 6). Full Stack Interview's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 15.6). On update cadence and ads there is nothing between them.

钢琴家 is free to download; Full Stack Interview costs $0.90 up front. Full Stack Interview sells 6 one-off in-app purchases. 钢琴家 asks for nothing beyond the download.

钢琴家 ships an update every 5 weeks, Full Stack Interview every 6 weeks. The most recent releases landed on September 19, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | 钢琴家 | Full Stack Interview |
| --- | --- | --- |
| Price | **Free** | $0.90 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | — | Paid |
| Size | 158 MB | 68 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [HAILUN PIANO CO., LTD.](https://appshunter.io/developer/1104870330) | [平 何](https://appshunter.io/developer/1630512266) |

## What reviewers say

### 钢琴家

[App page](https://appshunter.io/ios/app/id1438372072)

**Features:** macOS Compatibility

**In-app purchases:** none


### Full Stack Interview

[App page](https://appshunter.io/ios/app/full-stack-interview/id6761838506)

Prepare for technical interviews with a comprehensive question bank covering front-end, back-end, and mobile development. Access core knowledge, answering strategies, and practical skills to boost your success rate in recruitment and job-hopping interviews.

**Highlights:** Multi-platform question bank (Java, iOS, Android, Vue, Flutter, mini programs), Interview guide with core knowledge and skills, Classic questions from top companies, Offline access for practice, Suitable for front-end, back-end, and mobile developers

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1个月会员 | $0.29 | one-time |
| 3个月会员 | $0.59 | one-time |
| 6个月会员 | $0.89 | one-time |
| 1年会员 | $1.49 | one-time |
| 5年会员 | $5.99 | one-time |
| 永久会员 | $28.99 | one-time |


## Frequently asked questions

### Is 钢琴家 free?

钢琴家 is free to download, with no in-app purchases.

### Is Full Stack Interview free?

Full Stack Interview costs $0.90, and also offers in-app purchases.

### Do 钢琴家 or Full Stack Interview have ads?

Neither 钢琴家 nor Full Stack Interview shows ads.

### Which is updated more often, 钢琴家 or Full Stack Interview?

钢琴家 ships an update every 5 weeks, and Full Stack Interview every 6 weeks. Most recently, 钢琴家 was updated on September 19, 2026 and Full Stack Interview on September 6, 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.*