# Chemist Calc vs Heterocycles

The clearest difference is monetization model: Chemist Calc at free against Heterocycles's free with in-app purchases. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Chemist Calc sells 1 one-off in-app purchase and Heterocycles sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Chemist Calc against 5.0 for Heterocycles. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Chemist Calc ships an update every 9 months, Heterocycles every 11 months. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Chemist Calc | Heterocycles |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/chemist-calc/id1052603017/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/heterocycles/id6445909269/reviews) |
| Number of ratings | 1 | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 11 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 11 MB | 17 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ilan TETRUASHVILI](https://appshunter.io/developer/940821251) | [Clarity Applications](https://appshunter.io/developer/1646120472) |

## What reviewers say

### 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 |


### Heterocycles

[App page](https://appshunter.io/ios/app/heterocycles/id6445909269)

Master the names and applications of organic chemistry's heterocycles. This interactive app covers over 75 compounds with hundreds of examples and personalized review modes. Track your progress with achievements and learn about their roles in medicine and biology.

**Highlights:** 75+ heterocycles, Hundreds of examples, Multiple practice modes, Personalized review, Reference table, Achievements

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $4.99 | one-time |


## Frequently asked questions

### Is Chemist Calc free?

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

### Is Heterocycles free?

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

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

Chemist Calc and Heterocycles are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Chemist Calc or Heterocycles have ads?

Neither Chemist Calc nor Heterocycles shows ads.

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

Chemist Calc ships an update every 9 months, and Heterocycles every 11 months. Most recently, Chemist Calc was updated on October 16, 2026 and Heterocycles 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.*