# Gemology Notes vs 晶体光学实验室

The clearest difference is iOS requirement: Gemology Notes at 17.0 against 晶体光学实验室's 26.0. 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.

## The numbers

| Metric | Gemology Notes | 晶体光学实验室 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Monetization | Paid | — |
| Size | 31 MB | 2 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [际 郭](https://appshunter.io/developer/6797282134) | [苏州苏哇科技有限公司](https://appshunter.io/developer/6815154716) |

## What reviewers say

### Gemology Notes

[App page](https://appshunter.io/ios/app/gemology-notes/id6797660418)

An offline reference app for gemology students and professionals. Explore gemstone properties, crystal structures with interactive 3D models, and detailed identification points. Study gemology anywhere without an internet connection.

**Highlights:** Gemstone Browser, 3D Crystal Models, Detailed Gemstone Notes, Offline Access, Systematic Classification

**Features:** Vision Pro support

**In-app purchases:** none


### 晶体光学实验室

[App page](https://appshunter.io/ios/app/id6818200830)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gemology Notes free?

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

### Is 晶体光学实验室 free?

晶体光学实验室 is free to download, with no in-app purchases.

### Do Gemology Notes or 晶体光学实验室 have ads?

Neither Gemology Notes nor 晶体光学实验室 shows ads.

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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.*