# Shujiajia vs 3S

The clearest difference is in-app purchases: Shujiajia at none against 3S's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 3S sells 10 in-app purchases, starting at $300.00 per year. Shujiajia asks for nothing beyond the download.

Shujiajia ships an update every 2 weeks, 3S weekly. The most recent releases landed on November 3, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Shujiajia | 3S |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/shujiajia/id1461753422/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 127 MB | 75 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Datatang ( Beijing ) Technology Co., Ltd.](https://appshunter.io/developer/761977542) | [Vespaera Labs Ltd](https://appshunter.io/developer/6794322768) |

## What reviewers say

### Shujiajia

[App page](https://appshunter.io/ios/app/shujiajia/id1461753422)

This is a crowdsourcing platform developed by an AI data services company. It connects users to participate in data annotation and collection tasks. Earn rewards by contributing to AI development.

**Highlights:** AI data crowdsourcing, Data annotation tasks, Data collection opportunities, Earn rewards, Contribute to AI development

**Features:** macOS Compatibility

**In-app purchases:** none


### 3S

[App page](https://appshunter.io/ios/app/3s-ai-driven-foresight/id6803570827)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Pro Yearly | $300.00 | per year |
| AI Max Monthly | $300.00 | per month |
| 20 Credits | $2.00 | one-time |
| 50 Credits | $5.00 | one-time |
| 50 Credits | $10.00 | one-time |
| 200 Credits | $20.00 | one-time |
| 500 Credits | $50.00 | one-time |
| 1000 Credits | $100.00 | one-time |
| 2000 Credits | $200.00 | one-time |
| 5000 Credits | $500.00 | one-time |


## Frequently asked questions

### Is Shujiajia free?

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

### Is 3S free?

3S is free to download, with in-app purchases available.

### Do Shujiajia or 3S have ads?

Neither Shujiajia nor 3S shows ads.

### Which is updated more often, Shujiajia or 3S?

Shujiajia ships an update every 2 weeks, and 3S weekly. Most recently, Shujiajia was updated on November 3, 2026 and 3S on October 29, 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.*