# OiSee vs 作业批改

The clearest difference is in-app purchases: OiSee at none against 作业批改's 4. 作业批改's advantage is update cadence (every 3 weeks vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 作业批改 sells 4 in-app purchases, starting at $1.99 per 7 days. OiSee asks for nothing beyond the download.

OiSee ships an update every 5 months, 作业批改 every 3 weeks. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | OiSee | 作业批改 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Size | 16 MB | 17 MB |
| Requires iOS | 9.0 | 9.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou T.K Medical Instrument Co., Ltd.](https://appshunter.io/developer/1206695557) | [小雪 赵](https://appshunter.io/developer/1617984478) |

## What reviewers say

### OiSee

[App page](https://appshunter.io/ios/app/oisee/id1623502703)

**In-app purchases:** none


### 作业批改

[App page](https://appshunter.io/ios/app/id1666160567)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续周订阅 | $1.99 | per 7 days |
| 连续月订阅 | $6.99 | per month |
| 连续年套餐 | $14.99 | per year |
| 年VIP会员 | $14.99 | one-time |


## Frequently asked questions

### Is OiSee free?

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

### Is 作业批改 free?

作业批改 is free to download, with in-app purchases available.

### Do OiSee or 作业批改 have ads?

Neither OiSee nor 作业批改 shows ads.

### Which is updated more often, OiSee or 作业批改?

OiSee ships an update every 5 months, and 作业批改 every 3 weeks. Most recently, OiSee was updated on October 4, 2026 and 作业批改 on October 11, 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.*