# Dermoscopy Two Step Algorithm vs Top Derm

Dermoscopy Two Step Algorithm and Top Derm both sit at 4.6 stars, but that hides the real split: 100% of Dermoscopy Two Step Algorithm's written reviews are positive against 60% of Top Derm's. Dermoscopy Two Step Algorithm also leads on ads (none vs shown) and monetization model (free vs free with in-app purchases). Top Derm's advantage is update cadence (every 6 weeks vs every 5 months) and ratings volume (59 vs 10). On price, rating, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.6 for Dermoscopy Two Step Algorithm against 4.5 for Top Derm. That said, the two scores are not equally well evidenced: Top Derm has 59 ratings behind it against 10, so its average is the more settled of the two. Written reviews are what separate them: 100% of Dermoscopy Two Step Algorithm's written reviews are positive against 60% of Top Derm's.

Dermoscopy Two Step Algorithm ships an update every 5 months, Top Derm every 6 weeks. The most recent releases landed on September 11, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Dermoscopy Two Step Algorithm | Top Derm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (10 ratings)](https://appshunter.io/ios/app/dermoscopy-two-step-algorithm/id731753300/reviews)** | [4.5 (59 ratings)](https://appshunter.io/ios/app/top-derm/id1505608766/reviews) |
| Number of ratings | 10 | **59** |
| Positive reviews | **100.0% of reviews** | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 220 MB | 248 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Usatine & Erickson Media LLC](https://appshunter.io/developer/1466894388) | [Relevate Health Group, LLC](https://appshunter.io/developer/1786280213) |

## What reviewers say

### Dermoscopy Two Step Algorithm

[App page](https://appshunter.io/ios/app/dermoscopy-two-step-algorithm/id731753300)

This app guides healthcare professionals in interpreting dermoscopic patterns to identify skin lesions. It uses a series of questions and provides over 80 images and charts to aid in diagnosis. Interactive cases are included for practice.

**Highlights:** Dermoscopic pattern interpretation, Question-based diagnostic guidance, Over 80 photos and charts, 50 interactive diagnostic cases, Offline functionality, Melanocytic and non-melanocytic lesion analysis

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

**In-app purchases:** none


### Top Derm

[App page](https://appshunter.io/ios/app/top-derm/id1505608766)

This game is designed for dermatologists by dermatologists, offering a fun and challenging way to learn and identify skin disorders. It features medically accurate imagery and neuroscience-based game mechanics to enhance knowledge retention.

**Highlights:** Medically accurate derm imagery, Neuroscience-based game mechanics, Earn CME credits, Wide variety of dermatology topics, Customizable topic selection, High-resolution imagery with zoom, Personal expertise tracking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dermoscopy Two Step Algorithm free?

Dermoscopy Two Step Algorithm is free to download, with no in-app purchases.

### Is Top Derm free?

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

### Which has better reviews, Dermoscopy Two Step Algorithm or Top Derm?

Dermoscopy Two Step Algorithm is rated higher. Dermoscopy Two Step Algorithm averages 4.6 out of 5 from 10 ratings, while Top Derm averages 4.5 from 59 ratings.

### Do Dermoscopy Two Step Algorithm or Top Derm have ads?

Top Derm shows ads; Dermoscopy Two Step Algorithm does not.

### Which is updated more often, Dermoscopy Two Step Algorithm or Top Derm?

Dermoscopy Two Step Algorithm ships an update every 5 months, and Top Derm every 6 weeks. Most recently, Dermoscopy Two Step Algorithm was updated on September 11, 2026 and Top Derm on June 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.*