# CycleChem vs Heterocycles

CycleChem and Heterocycles are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. CycleChem 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.

CycleChem ships an update every 6 months, Heterocycles every 11 months. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | CycleChem | Heterocycles |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/heterocycles/id6445909269/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 11 months |
| Monetization | — | Free with in-app purchases |
| Size | 8 MB | 17 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Eric ORDONNEAU](https://appshunter.io/developer/1465804393) | [Clarity Applications](https://appshunter.io/developer/1646120472) |

## What reviewers say

### CycleChem

[App page](https://appshunter.io/ios/app/cyclechem/id1465804394)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all games | $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 CycleChem free?

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

### Is Heterocycles free?

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

### Do CycleChem or Heterocycles have ads?

Neither CycleChem nor Heterocycles shows ads.

### Which is updated more often, CycleChem or Heterocycles?

CycleChem ships an update every 6 months, and Heterocycles every 11 months. Most recently, CycleChem was updated on October 7, 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.*