# Kolsa vs ЯBoom

The clearest difference is rating: Kolsa at 5.0 against ЯBoom's 4.3. Kolsa also leads on review sentiment (92% vs 72%) and ratings volume (29 vs 9). ЯBoom's advantage is update cadence (every 9 days vs every 6 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Kolsa holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 29 and 9 respectively. Written reviews point the same way: 92% of Kolsa's written reviews are positive against 72% of ЯBoom's.

Kolsa ships an update every 6 weeks, ЯBoom every 9 days. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Kolsa | ЯBoom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (29 ratings)](https://appshunter.io/ios/app/kolsa/id6448317958/reviews)** | [4.3 (9 ratings)](https://appshunter.io/ios/app/boom/id6754245902/reviews) |
| Number of ratings | **29** | 9 |
| Positive reviews | **92.2% of reviews** | 72.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | Free | Free |
| Size | 190 MB | 71 MB |
| Requires iOS | 15.4 | **15.0.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [KOLSA LLC](https://appshunter.io/developer/1684403366) | [Artem Pchelnikov](https://appshunter.io/developer/1847357019) |

## What reviewers say

### Kolsa

[App page](https://appshunter.io/ios/app/kolsa/id6448317958)

Achieve your fitness goals with home workouts and personalized training plans. This app offers a supportive community and expert guidance to help you get in shape, boost energy, and build confidence. Suitable for all fitness levels, it focuses on targeted problem areas and provides progress tracking for visible results.

**Highlights:** Home workouts without equipment, Personalized course selection, Programs for rapid results, Targeted problem area workouts, Exercises for all levels, Progress trackers

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

**In-app purchases:** none


### ЯBoom

[App page](https://appshunter.io/ios/app/boom/id6754245902)

This fitness app offers personalized workout programs and an AI nutritionist to help users achieve their fitness goals, particularly focusing on glute development. It includes a comprehensive exercise library, progress tracking, and meal planning.

**Highlights:** Personalized glute growth programs, Extensive exercise library with video guides, AI-powered nutritionist for meal planning, Calorie, protein, fat, and carb calculation, Workout and progress logging, Visual progress tracking with photos

**In-app purchases:** none


## Frequently asked questions

### Is Kolsa free?

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

### Is ЯBoom free?

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

### Which has better reviews, Kolsa or ЯBoom?

Kolsa is rated higher. Kolsa averages 5.0 out of 5 from 29 ratings, while ЯBoom averages 4.3 from 9 ratings.

### Do Kolsa or ЯBoom have ads?

Neither Kolsa nor ЯBoom shows ads.

### Which is updated more often, Kolsa or ЯBoom?

Kolsa ships an update every 6 weeks, and ЯBoom every 9 days. Most recently, Kolsa was updated on September 24, 2026 and ЯBoom on September 23, 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.*