# Drug Structures vs Pyrls

The clearest difference is in-app purchases: Drug Structures at none against Pyrls's 4. Pyrls's advantage is update cadence (every 9 days vs every 14 months) and ratings volume (135 vs 3). On price, rating, ads and device support there is nothing between them.

Both are free to download. Pyrls sells 4 in-app purchases, starting at $40.00 per month. Drug Structures asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Drug Structures against 4.8 for Pyrls. That said, the two scores are not equally well evidenced: Pyrls has 135 ratings behind it against 3, so its average is the more settled of the two.

Drug Structures ships an update every 14 months, Pyrls every 9 days. The most recent releases landed on September 16, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Drug Structures | Pyrls |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/drug-structures/id1207401347/reviews) | **[4.8 (135 ratings)](https://appshunter.io/ios/app/pyrls/id1517540628/reviews)** |
| Number of ratings | 3 | **135** |
| Positive reviews | — | 82.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#72** |
| Size | 3 MB | 80 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [David Bourne](https://appshunter.io/developer/1031086386) | [Cosmas Health LLC](https://appshunter.io/developer/1517540627) |

## What reviewers say

### Drug Structures

[App page](https://appshunter.io/ios/app/drug-structures/id1207401347)

This game helps pharmacy and healthcare students practice identifying drug structures. It offers a focused learning experience for medical professionals in training.

**Highlights:** Identify drug structures, Practice for healthcare students, Targeted medical education, Free to play

**Features:** macOS Compatibility

**In-app purchases:** none


### Pyrls

[App page](https://appshunter.io/ios/app/pyrls/id1517540628)

**Currently charting:** #72 Top Grossing · Medical (US App Store)

This app provides essential drug information for medical professionals, focusing on practical details like indications, pharmacology, and counseling points. It offers quick access to key data, reference tables, and clinical pearls to aid in medication management and patient care.

**Highlights:** Drug naming and indications, Pharmacology details, Counseling points, Safety and monitoring information, Reference tables and charts

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pyrls Monthly Membership | $40.00 | per month |
| Annual: Student/New Provider | $119.99 | per year |
| Pyrls 6-Month Membership | $119.99 | per 6 months |
| Annual: Professional | $179.99 | per year |

**What reviewers like**

- 👍 Easy to use and navigate
- 💡 Excellent resource for drug information
- 📊 Fantastic charts and summaries
- 📚 Helpful for students and practitioners
- 🚀 Quick access to information

**What reviewers complain about**

- 📉 Incomplete drug database
- 💰 Expensive subscription for some
- ❓ Some users experience issues with free content

**Reported bugs**

- Free NAPLEX questions do not open
- App does not open

**Requested features**

- iPad mini support
- Fund business outside of user subscriptions


## Frequently asked questions

### Is Drug Structures free?

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

### Is Pyrls free?

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

### Which has better reviews, Drug Structures or Pyrls?

Pyrls is rated higher. Drug Structures averages 4.7 out of 5 from 3 ratings, while Pyrls averages 4.8 from 135 ratings.

### Do Drug Structures or Pyrls have ads?

Neither Drug Structures nor Pyrls shows ads.

### Which is updated more often, Drug Structures or Pyrls?

Drug Structures ships an update every 14 months, and Pyrls every 9 days. Most recently, Drug Structures was updated on September 16, 2026 and Pyrls on October 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.*