# ChemAssist vs Chemist Calc

The clearest difference is rating: Chemist Calc at 5.0 against ChemAssist's 1.0. ChemAssist's advantage is in-app purchases (none vs 1) and update cadence (every 3 months vs every 9 months). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Chemist Calc sells 1 one-off in-app purchase. ChemAssist asks for nothing beyond the download.

Chemist Calc holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

ChemAssist ships an update every 3 months, Chemist Calc every 9 months. The most recent releases landed on October 23, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | ChemAssist | Chemist Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/chemassist/id624711407/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chemist-calc/id1052603017/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Free | Free |
| Size | 42 MB | 11 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thermo Fisher Scientific](https://appshunter.io/developer/407517076) | [ilan TETRUASHVILI](https://appshunter.io/developer/940821251) |

## What reviewers say

### ChemAssist

[App page](https://appshunter.io/ios/app/chemassist/id624711407)

Manage classroom or stock room chemicals with this cloud-based mobile app. Easily add chemicals via QR scan or manual entry, track usage, and receive real-time updates on recalled products. Provides instant SDS access and generates PDF order forms.

**Highlights:** QR code chemical scanning, Manual chemical entry, Cloud-based inventory management, Real-time product recall notices, SDS information access, Low stock and expiration notifications, PDF order form generation

**Features:** Vision Pro support

**In-app purchases:** none


### Chemist Calc

[App page](https://appshunter.io/ios/app/chemist-calc/id1052603017)

This app serves as a smart chemistry calculator for converting between moles and grams. It also provides a comprehensive periodic table with element specifications and unit conversion tools.

**Highlights:** Mole to gram conversion, Gram to mole conversion, Periodic table with element specifications, Unit conversion, Learn chemistry signs

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ad's | $0.99 | one-time |


## Frequently asked questions

### Is ChemAssist free?

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

### Is Chemist Calc free?

Chemist Calc is free to download, with in-app purchases available.

### Which has better reviews, ChemAssist or Chemist Calc?

Chemist Calc is rated higher. ChemAssist averages 1.0 out of 5 from 1 ratings, while Chemist Calc averages 5.0 from 1 ratings.

### Do ChemAssist or Chemist Calc have ads?

Neither ChemAssist nor Chemist Calc shows ads.

### Which is updated more often, ChemAssist or Chemist Calc?

ChemAssist ships an update every 3 months, and Chemist Calc every 9 months. Most recently, ChemAssist was updated on October 23, 2026 and Chemist Calc on November 1, 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.*