# 口袋化学 vs CrysView

The clearest difference is in-app purchases: CrysView at none against 口袋化学's 1. 口袋化学's advantage is iOS requirement (13.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 口袋化学 sells 1 one-off in-app purchase. CrysView asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. Both last shipped on October 10, 2026.

## The numbers

| Metric | 口袋化学 | CrysView |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/and/id6504169379/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 92.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 60 MB | 15 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [宇 刘](https://appshunter.io/developer/1551581698) | [凌云 马](https://appshunter.io/developer/6789596294) |

## What reviewers say

### 口袋化学

[App page](https://appshunter.io/ios/app/and/id6504169379)

This app is a comprehensive chemistry learning and reference tool. It offers a detailed periodic table, a vast database of inorganic and organic substances, and a searchable collection of over 1300 chemical reaction equations. It also includes resources for common gas preparation, metal activity, solubility, formulas, and molar mass calculation.

**Highlights:** Detailed periodic table with element details, Database of over 400 inorganic and organic substances, Searchable library of 1300+ chemical reaction equations, Categorized reaction types, Common gas preparation methods, Metal activity series, Solubility tables, Molar mass calculator

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 永久会员 | $2.99 | one-time |


### CrysView

[App page](https://appshunter.io/ios/app/crysview/id6789606012)

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

**In-app purchases:** none


## Frequently asked questions

### Is 口袋化学 free?

口袋化学 is free to download, with in-app purchases available.

### Is CrysView free?

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

### Do 口袋化学 or CrysView have ads?

Neither 口袋化学 nor CrysView shows ads.

### Which is updated more often, 口袋化学 or CrysView?

口袋化学 ships an update every 2 weeks, and CrysView every 2 weeks. Most recently, 口袋化学 was updated on October 10, 2026 and CrysView on October 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*