# III vs 高中知识点总结大全

The clearest difference is review sentiment: III at 100% against 高中知识点总结大全's 55%. 高中知识点总结大全's advantage is update cadence (every 3 months vs every 17 months) and price ($1.99 vs $2.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

III costs $2.99 and 高中知识点总结大全 $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

III ships an update every 17 months, 高中知识点总结大全 every 3 months. The most recent releases landed on October 26, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | III | 高中知识点总结大全 |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/iii-v-comp/id475184953/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **100.0% of reviews** | 55.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 3 months** |
| Monetization | Paid | Paid |
| Size | 10 MB | 10 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takuya Ishikawa](https://appshunter.io/developer/468311118) | [妮 应](https://appshunter.io/developer/505362520) |

## What reviewers say

### III

[App page](https://appshunter.io/ios/app/iii-v-comp/id475184953)

Calculate material properties for III-V compound semiconductors like AlGaInAsP. It determines compositions, lattice constant, strain, bandgap, and effective masses for InP or GaAs substrates.

**Highlights:** III-V compound semiconductor calculations, Material property determination, Composition calculation (x, y, z), Lattice constant and strain analysis, Bandgap and effective mass calculation, Supports InP and GaAs substrates

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

**In-app purchases:** none


### 高中知识点总结大全

[App page](https://appshunter.io/ios/app/id525299138)

This app provides a comprehensive summary of high school chemistry knowledge points. It covers inorganic and organic chemistry, chemical experiments, reaction principles, industrial chemistry, environmental protection, and essential equations. Ideal for high school students preparing for exams.

**Highlights:** Comprehensive chemistry knowledge summaries, Covers inorganic and organic chemistry, Includes chemical experiments and reaction principles, Essential equations and exam requirements, Suitable for exam preparation

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

**In-app purchases:** none


## Frequently asked questions

### Is III free?

III costs $2.99, with no in-app purchases.

### Is 高中知识点总结大全 free?

高中知识点总结大全 costs $1.99, with no in-app purchases.

### Do III or 高中知识点总结大全 have ads?

Neither III nor 高中知识点总结大全 shows ads.

### Which is updated more often, III or 高中知识点总结大全?

III ships an update every 17 months, and 高中知识点总结大全 every 3 months. Most recently, III was updated on October 26, 2026 and 高中知识点总结大全 on October 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.*