# IG CHEM vs Pratt Munson Safe

The clearest difference is price: Pratt Munson Safe at Free against IG CHEM's $4.99. Pratt Munson Safe also leads on in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.6). IG CHEM's advantage is update cadence (every 4 months vs every 36 months). On ads and device support there is nothing between them.

Pratt Munson Safe is free to download; IG CHEM costs $4.99 up front. IG CHEM sells 2 one-off in-app purchases. Pratt Munson Safe asks for nothing beyond the download.

IG CHEM ships an update every 4 months, Pratt Munson Safe every 36 months. The most recent releases landed on September 19, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | IG CHEM | Pratt Munson Safe |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pratt-munson-safe/id1531362811/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 36 months |
| Monetization | Paid | **Free** |
| Size | 14 MB | 21 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [东东 张](https://appshunter.io/developer/987341807) | [Munson-Williams-Proctor Arts Institute](https://appshunter.io/developer/1531362813) |

## What reviewers say

### IG CHEM

[App page](https://appshunter.io/ios/app/ig-chem/id1050530524)

This app provides teaching notes and tools designed to enhance the learning experience for GCSE chemistry students. It aims to make studying more effective and engaging.

**Highlights:** GCSE Chemistry notes, Learning tools, Improved learning experience, Educational content

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Worked Examples | $1.99 | one-time |
| FlashCards | $2.99 | one-time |


### Pratt Munson Safe

[App page](https://appshunter.io/ios/app/pratt-munson-safe/id1531362811)

This app provides students, faculty, and staff with enhanced safety on campus. It offers real-time alerts, emergency contact options, and tools to share your location with friends or campus security.

**Highlights:** Emergency Contacts, Mobile Bluelight with real-time location, Friend Walk location sharing, Report a tip to security, Virtual WalkHome monitoring, Live chat with security, Campus emergency plans

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IG CHEM free?

IG CHEM costs $4.99, and also offers in-app purchases.

### Is Pratt Munson Safe free?

Pratt Munson Safe is free to download, with no in-app purchases.

### Do IG CHEM or Pratt Munson Safe have ads?

Neither IG CHEM nor Pratt Munson Safe shows ads.

### Which is updated more often, IG CHEM or Pratt Munson Safe?

IG CHEM ships an update every 4 months, and Pratt Munson Safe every 36 months. Most recently, IG CHEM was updated on September 19, 2026 and Pratt Munson Safe on September 10, 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.*