# IsoCalc vs Iso

The clearest difference is rating: Iso at 5.0 against IsoCalc's 1.8. Iso also leads on in-app purchases (none vs 2). IsoCalc's advantage is update cadence (every 3 days vs monthly) and ratings volume (6 vs 2). On price and device support there is nothing between them.

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

Iso holds the better App Store score, 5.0 against 1.8. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

IsoCalc ships an update every 3 days, Iso monthly. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | IsoCalc | Iso |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (6 ratings)](https://appshunter.io/ios/app/isocalc/id1474971508/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/iso/id6755649244/reviews)** |
| Number of ratings | **6** | 2 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | **Every 3 days** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 24 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 9+ |
| Developer | [Damian Szejnoch](https://appshunter.io/developer/1474971507) | [Margarita Sokolnikova](https://appshunter.io/developer/1855260553) |

## 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 |


### Iso

[App page](https://appshunter.io/ios/app/iso/id6755649244)

This app helps patients undergoing systemic retinoid treatment manage their medication, track side effects, and monitor progress. It provides reminders for medication, water intake, and sunscreen application, ensuring a disciplined and organized approach to therapy for healthier skin.

**Highlights:** Medication intake tracking, Side effect monitoring, Visual progress tracking, Comprehensive reminder system, Secure data storage, Treatment history

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

**In-app purchases:** none


## Frequently asked questions

### Is IsoCalc free?

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

### Is Iso free?

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

### Which has better reviews, IsoCalc or Iso?

Iso is rated higher. IsoCalc averages 1.8 out of 5 from 6 ratings, while Iso averages 5.0 from 2 ratings.

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

IsoCalc ships an update every 3 days, and Iso monthly. Most recently, IsoCalc was updated on October 1, 2026 and Iso on October 2, 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.*