# MyBioTutor vs Structural Formulas Study

The clearest difference is ads: Structural Formulas Study at none against MyBioTutor's shown. MyBioTutor's advantage is update cadence (daily vs every 5 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

MyBioTutor ships an update daily, Structural Formulas Study every 5 weeks. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | MyBioTutor | Structural Formulas Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 5 weeks |
| Size | 4 MB | 5 MB |
| Requires iOS | **18.2** | 18.4 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Jeremy Burkett](https://appshunter.io/developer/1254864326) | [Jun Yamabe](https://appshunter.io/developer/1732682049) |

## What reviewers say

### MyBioTutor

[App page](https://appshunter.io/ios/app/mybiotutor/id6740412218)

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

**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 MyBioTutor free?

MyBioTutor 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 MyBioTutor or Structural Formulas Study have ads?

MyBioTutor shows ads; Structural Formulas Study does not.

### Which is updated more often, MyBioTutor or Structural Formulas Study?

MyBioTutor ships an update daily, and Structural Formulas Study every 5 weeks. Most recently, MyBioTutor was updated on September 9, 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.*