# BJ vs 试卷橡皮擦

The clearest difference is in-app purchases: BJ at none against 试卷橡皮擦's 3. BJ also leads on update cadence (every 5 weeks vs every 9 months) and iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. 试卷橡皮擦 sells 3 in-app purchases, starting at $2.99 per 7 days. BJ asks for nothing beyond the download.

BJ ships an update every 5 weeks, 试卷橡皮擦 every 9 months. The most recent releases landed on August 18, 2026 and June 27, 2026 respectively.

## The numbers

| Metric | BJ | 试卷橡皮擦 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (9 ratings)](https://appshunter.io/ios/app/bj-gps/id1494086758/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 9 months |
| Monetization | Free | — |
| Size | 167 MB | 30 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [介甲 张](https://appshunter.io/developer/1319188080) | [枭雄 毛](https://appshunter.io/developer/1747634657) |

## What reviewers say

### BJ

[App page](https://appshunter.io/ios/app/bj-gps/id1494086758)

Control your drone and view its camera feed in real-time. Adjust throttle, take photos, and record videos directly from your phone.

**Highlights:** Real-time drone control, Live camera feed display, Photo capture, Video recording, Throttle adjustment

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

**In-app purchases:** none


### 试卷橡皮擦

[App page](https://appshunter.io/ios/app/ai/id6749604691)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 慧写解题连续周会员 | $2.99 | per 7 days |
| 连续包月会员 | $3.99 | per month |
| 连续包季会员 | $7.99 | per 3 months |


## Frequently asked questions

### Is BJ free?

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

### Is 试卷橡皮擦 free?

试卷橡皮擦 is free to download, with in-app purchases available.

### Do BJ or 试卷橡皮擦 have ads?

Neither BJ nor 试卷橡皮擦 shows ads.

### Which is updated more often, BJ or 试卷橡皮擦?

BJ ships an update every 5 weeks, and 试卷橡皮擦 every 9 months. Most recently, BJ was updated on August 18, 2026 and 试卷橡皮擦 on June 27, 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.*