# Iris Macros vs Studio KSL by Katrina Scott

The clearest difference is ratings volume: Studio KSL by Katrina Scott at 200 against Iris Macros's 1. Studio KSL by Katrina Scott also leads on iOS requirement (15.1 vs 17.0). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. Iris Macros sells 2 in-app purchases, starting at $2.99 per month and Studio KSL by Katrina Scott sells 4 in-app purchases, starting at $27.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Iris Macros against 4.9 for Studio KSL by Katrina Scott. That said, the two scores are not equally well evidenced: Studio KSL by Katrina Scott has 200 ratings behind it against 1, so its average is the more settled of the two.

Iris Macros ships an update every 2 weeks, Studio KSL by Katrina Scott every 3 weeks. The most recent releases landed on October 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Iris Macros | Studio KSL by Katrina Scott |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/iris-macros/id6477751819/reviews)** | [4.9 (200 ratings)](https://appshunter.io/ios/app/studio-ksl-by-katrina-scott/id6740766431/reviews) |
| Number of ratings | 1 | **200** |
| Positive reviews | — | 96.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 21 MB | 120 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Didier Fuentes](https://appshunter.io/developer/1636573466) | [Katrina Scott](https://appshunter.io/developer/1791499371) |

## What reviewers say

### Iris Macros

[App page](https://appshunter.io/ios/app/iris-macros/id6477751819)

This app uses AI to estimate the macronutrients in your meals from a photo. It offers instant insights into calories, fats, proteins, and carbohydrates without manual input. Enjoy a private and intuitive experience for healthier eating.

**Highlights:** AI-powered macro estimation from photos, Instant nutrient insights (calories, macros), Anonymous and private user experience, Intuitive and user-friendly interface, User-controlled data management, No personal information required for use

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $2.99 | per month |
| Unlimited Access | $29.99 | per year |


### Studio KSL by Katrina Scott

[App page](https://appshunter.io/ios/app/studio-ksl-by-katrina-scott/id6740766431)

This app offers a comprehensive health and fitness experience with a certified personal trainer. Access a wide variety of on-demand and live workouts, mindfulness practices, and wellness programs. Connect with a supportive community and track your progress with personalized schedules and goal-setting tools.

**Highlights:** New workouts weekly, Extensive on-demand workout library, Live studio classes, Community connection features, Personalized fitness programs, Offline workout viewing, Goal setting and journaling

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Membership | $27.99 | per month |
| Annual Membership | $159.00 | per year |
| $159 annual | $159.00 | per year |
| Annual Membership - Standard Price | $199.00 | per year |

**What reviewers like**

- 👍 Welcoming and inclusive community
- 🚀 Variety of effective workouts
- 💡 Comprehensive fitness, wellness, and recipe features
- 👍 Motivating and inspiring trainer
- 👍 User-friendly and beautiful app design

**What reviewers complain about**

- 🐛 Live workouts not immediately available on-demand

**Reported bugs**

- Occasional app crashes or freezes

**Requested features**

- Dark mode option
- More advanced analytics and progress tracking


## Frequently asked questions

### Is Iris Macros free?

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

### Is Studio KSL by Katrina Scott free?

Studio KSL by Katrina Scott is free to download, with in-app purchases available.

### Which has better reviews, Iris Macros or Studio KSL by Katrina Scott?

Iris Macros is rated higher. Iris Macros averages 5.0 out of 5 from 1 ratings, while Studio KSL by Katrina Scott averages 4.9 from 200 ratings.

### Which is updated more often, Iris Macros or Studio KSL by Katrina Scott?

Iris Macros ships an update every 2 weeks, and Studio KSL by Katrina Scott every 3 weeks. Most recently, Iris Macros was updated on October 3, 2026 and Studio KSL by Katrina Scott on October 24, 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.*