# Heterocycles vs BioPharma Knowledge Test

The clearest difference is update cadence: BioPharma Knowledge Test at every 2 months against Heterocycles's every 11 months. Heterocycles's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.2). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Heterocycles sells 1 one-off in-app purchase and BioPharma Knowledge Test sells 2 in-app purchases, starting at $13.99 per month. Whichever you choose, the download price is not the number that matters.

Heterocycles ships an update every 11 months, BioPharma Knowledge Test every 2 months. The most recent releases landed on September 13, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Heterocycles | BioPharma Knowledge Test |
| --- | --- | --- |
| 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 11 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 9 MB |
| Requires iOS | **15.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Clarity Applications](https://appshunter.io/developer/1646120472) | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) |

## What reviewers say

### 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 |


### BioPharma Knowledge Test

[App page](https://appshunter.io/ios/app/biopharma-knowledge-test/id6740738987)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $13.99 | per month |
| Lifetime version | $24.99 | one-time |


## Frequently asked questions

### Is Heterocycles free?

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

### Is BioPharma Knowledge Test free?

BioPharma Knowledge Test is free to download, with in-app purchases available.

### Do Heterocycles or BioPharma Knowledge Test have ads?

Neither Heterocycles nor BioPharma Knowledge Test shows ads.

### Which is updated more often, Heterocycles or BioPharma Knowledge Test?

Heterocycles ships an update every 11 months, and BioPharma Knowledge Test every 2 months. Most recently, Heterocycles was updated on September 13, 2026 and BioPharma Knowledge Test on May 16, 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.*