# IsoCalc vs DermLite

The clearest difference is in-app purchases: DermLite at none against IsoCalc's 2. IsoCalc's advantage is update cadence (every 3 days vs every 3 weeks). On price, review sentiment, device support and iOS requirement there is nothing between them.

Both are free to download. IsoCalc sells 2 in-app purchases, starting at $1.99 per month. DermLite asks for nothing beyond the download.

IsoCalc ships an update every 3 days, DermLite every 3 weeks. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | IsoCalc | DermLite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (6 ratings)](https://appshunter.io/ios/app/isocalc/id1474971508/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 637 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Damian Szejnoch](https://appshunter.io/developer/1474971507) | [FotoFinder Systems GmbH](https://appshunter.io/developer/387895117) |

## What reviewers say

### IsoCalc

[App page](https://appshunter.io/ios/app/isocalc/id1474971508)

Track your Isotretinoin treatment progress with personalized profiles, automatic status updates, and photo tracking. Set reminders and manage your daily dosage with an intuitive slider.

**Highlights:** Individual treatment profiles, Automatic progress tracking, Photo progress tracking, Treatment reminders, Daily dose helper, Dose status slider

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Account | $1.99 | per month |
| Premium Account | $0.99 | one-time |


### DermLite

[App page](https://appshunter.io/ios/app/dermlite/id6760183398)

This app transforms your iPhone into a professional dermoscopy camera for documenting and monitoring skin lesions. It allows for precise lesion mapping, side-by-side image comparison, and secure storage of medical images, ensuring reliable follow-ups.

**Highlights:** Capture dermoscopic and clinical images, Overlay previous images for comparison, Control dermoscopy lighting modes, Add and manage DermLite devices, Map lesions on clinical overview photos, Secure storage for medical images

**In-app purchases:** none


## Frequently asked questions

### Is IsoCalc free?

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

### Is DermLite free?

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

### Which is updated more often, IsoCalc or DermLite?

IsoCalc ships an update every 3 days, and DermLite every 3 weeks. Most recently, IsoCalc was updated on October 1, 2026 and DermLite on October 6, 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.*