# 口算批改 vs 中考满分·化学

The clearest difference is update cadence: 中考满分·化学 at weekly against 口算批改's every 3 months. 口算批改's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 口算批改 sells 3 in-app purchases, starting at $3.99 per month and 中考满分·化学 sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

口算批改 ships an update every 3 months, 中考满分·化学 weekly. The most recent releases landed on June 5, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | 口算批改 | 中考满分·化学 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pk/id6446873728/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 18 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Light Speed Intelligence Technology Co., Ltd.](https://appshunter.io/developer/1670291399) | [大勇 阎](https://appshunter.io/developer/1068052430) |

## What reviewers say

### 口算批改

[App page](https://appshunter.io/ios/app/pk/id6446873728)

Instantly check children's math homework by taking a photo. This AI-powered tool helps identify errors in various math problem types, supporting learning and reducing workload for parents and teachers. Offers subscription plans for continued use.

**Highlights:** Instant photo-based homework checking, AI-powered error detection, Supports diverse math problem types, Helps children learn from mistakes, Reduces workload for parents/teachers, Daily practice exercises

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $3.99 | per month |
| 年会员 | $19.99 | per year |
| 永久会员 | $22.99 | one-time |


### 中考满分·化学

[App page](https://appshunter.io/ios/app/id6465680135)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 包月 | $0.99 | per month |
| 包年 | $9.99 | per year |
| 购买一个知识点集 | $0.99 | one-time |


## Frequently asked questions

### Is 口算批改 free?

口算批改 is free to download, with in-app purchases available.

### Is 中考满分·化学 free?

中考满分·化学 is free to download, with in-app purchases available.

### Do 口算批改 or 中考满分·化学 have ads?

Neither 口算批改 nor 中考满分·化学 shows ads.

### Which is updated more often, 口算批改 or 中考满分·化学?

口算批改 ships an update every 3 months, and 中考满分·化学 weekly. Most recently, 口算批改 was updated on June 5, 2026 and 中考满分·化学 on September 16, 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.*