# 物理大师 vs 盐盒

The clearest difference is in-app purchases: 盐盒 at none against 物理大师's 10. 盐盒 also leads on update cadence (every 5 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 物理大师 sells 10 one-off in-app purchases. 盐盒 asks for nothing beyond the download.

物理大师 ships an update every 4 months, 盐盒 every 5 weeks. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 物理大师 | 盐盒 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/plus/id969931930/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 40 MB | 92 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou WuJie Network Technology Co.,Ltd.](https://appshunter.io/developer/850948888) | [Xiamen Salt Box Technology Co., Ltd.](https://appshunter.io/developer/1676890126) |

## What reviewers say

### 物理大师

[App page](https://appshunter.io/ios/app/plus/id969931930)

This app offers comprehensive video lessons and practice exercises for junior and senior high school science subjects. It covers pre-study, review, and homework assistance with engaging animated content and interactive problem-solving. Aimed at helping students master complex concepts and improve academic performance.

**Highlights:** Synchronized school curriculum content, Animated and engaging video lessons, Interactive video-based problem solving, Step-by-step learning plans, Audio learning for efficient study, Pre-study, review, and practice modules

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 初中物理一年会员 | $124.99 | one-time |
| 初中化学一年会员 | $124.99 | one-time |
| 初中语文一年会员 | $124.99 | one-time |
| 小学科学一年会员 | $124.99 | one-time |
| 初中数理化半年会员 | $139.99 | one-time |
| 高中数学一年会员 | $199.99 | one-time |
| 高中物理一年会员 | $199.99 | one-time |
| 高中化学一年会员 | $199.99 | one-time |
| 初中科学一年会员 | $249.99 | one-time |
| 高中数理化一年会员 | $399.99 | one-time |


### 盐盒

[App page](https://appshunter.io/ios/app/id1602781401)

**In-app purchases:** none


## Frequently asked questions

### Is 物理大师 free?

物理大师 is free to download, with in-app purchases available.

### Is 盐盒 free?

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

### Do 物理大师 or 盐盒 have ads?

Neither 物理大师 nor 盐盒 shows ads.

### Which is updated more often, 物理大师 or 盐盒?

物理大师 ships an update every 4 months, and 盐盒 every 5 weeks. Most recently, 物理大师 was updated on November 6, 2026 and 盐盒 on November 7, 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.*