# 仪器分析仿真 vs Structural Formulas Study

The clearest difference is update cadence: Structural Formulas Study at every 5 weeks against 仪器分析仿真's every 41 months. 仪器分析仿真's advantage is iOS requirement (9.0 vs 18.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

仪器分析仿真 ships an update every 41 months, Structural Formulas Study every 5 weeks. The most recent releases landed on September 28, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 仪器分析仿真 | Structural Formulas Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 5 weeks** |
| Size | 988 MB | 5 MB |
| Requires iOS | **9.0** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [正彩 刘](https://appshunter.io/developer/1212206358) | [Jun Yamabe](https://appshunter.io/developer/1732682049) |

## What reviewers say

### 仪器分析仿真

[App page](https://appshunter.io/ios/app/id1329844454)

**Features:** macOS Compatibility

**In-app purchases:** none


### Structural Formulas Study

[App page](https://appshunter.io/ios/app/structural-formulas-study/id6752260162)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 仪器分析仿真 free?

仪器分析仿真 is free to download, with no in-app purchases.

### Is Structural Formulas Study free?

Structural Formulas Study is free to download, with no in-app purchases.

### Do 仪器分析仿真 or Structural Formulas Study have ads?

Neither 仪器分析仿真 nor Structural Formulas Study shows ads.

### Which is updated more often, 仪器分析仿真 or Structural Formulas Study?

仪器分析仿真 ships an update every 41 months, and Structural Formulas Study every 5 weeks. Most recently, 仪器分析仿真 was updated on September 28, 2026 and Structural Formulas Study on September 20, 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.*