# Lattica vs Gemology Notes

The clearest difference is review sentiment: Gemology Notes at 100% against Lattica's 50%. Gemology Notes also leads on update cadence (every 4 days vs every 9 months) and device support (3 vs 1). Lattica's advantage is monetization model (free vs paid). On price, ads and in-app purchases there is nothing between them.

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

Lattica ships an update every 9 months, Gemology Notes every 4 days. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Lattica | Gemology Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/lattica/id6739730090/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 days** |
| Monetization | **Free** | Paid |
| Size | 3 MB | 31 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Sota Iguchi](https://appshunter.io/developer/1603371067) | [际 郭](https://appshunter.io/developer/6797282134) |

## What reviewers say

### Lattica

[App page](https://appshunter.io/ios/app/lattica/id6739730090)

Visualize atomic arrangements and lattice systems in stunning 3D. This educational tool brings complex crystal structures to life, making it ideal for students and researchers in chemistry, materials science, and crystallography.

**Highlights:** 3D Crystal Models, Lattice Visualization, Interactive Exploration, Zoom and Rotate Structures, Detailed Visuals

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Lattica free?

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

### Is Gemology Notes free?

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

### Do Lattica or Gemology Notes have ads?

Neither Lattica nor Gemology Notes shows ads.

### Which is updated more often, Lattica or Gemology Notes?

Lattica ships an update every 9 months, and Gemology Notes every 4 days. Most recently, Lattica was updated on October 8, 2026 and Gemology Notes on October 11, 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.*