# Concentration training. vs BOS Chat

The clearest difference is in-app purchases: BOS Chat at none against Concentration training.'s 10. BOS Chat also leads on ads (none vs shown) and update cadence (weekly vs every 5 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Concentration training. sells 10 in-app purchases, starting at $1.99 per month. BOS Chat asks for nothing beyond the download.

Concentration training. ships an update every 5 weeks, BOS Chat weekly. Both last shipped on October 2, 2026.

## The numbers

| Metric | Concentration training. | BOS Chat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (42 ratings)](https://appshunter.io/ios/app/concentration-training/id6462426417/reviews)** | — |
| Number of ratings | **42** | — |
| Positive reviews | 94.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 57 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Olena Gotsulyak](https://appshunter.io/developer/1699979294) | [GENIE AI](https://appshunter.io/developer/1804148316) |

## What reviewers say

### Concentration training.

[App page](https://appshunter.io/ios/app/concentration-training/id6462426417)

Enhance your focus, productivity, and memory with targeted exercises. This app helps combat procrastination and improve logic and reflexes through engaging training modules.

**Highlights:** Improve focus and concentration, Boost productivity and overcome procrastination, Enhance logic and reflexes, Train memory recall, Engage with Schulte table exercises, Quick decision-making tasks

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly plan | $1.99 | per month |
| Monthly subscription | $3.99 | per month |
| Annual plan | $5.99 | per year |
| Monthly subscription | $7.99 | per month |
| Monthly subscription | $14.99 | per month |
| Full version | $3.99 | one-time |
| Full version | $4.99 | one-time |
| Premium access | $7.99 | one-time |
| Full version | $9.99 | one-time |
| Full version | $19.99 | one-time |


### BOS Chat

[App page](https://appshunter.io/ios/app/bos-chat/id6760129355)

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

**In-app purchases:** none


## Frequently asked questions

### Is Concentration training. free?

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

### Is BOS Chat free?

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

### Do Concentration training. or BOS Chat have ads?

Concentration training. shows ads; BOS Chat does not.

### Which is updated more often, Concentration training. or BOS Chat?

Concentration training. ships an update every 5 weeks, and BOS Chat weekly. Most recently, Concentration training. was updated on October 2, 2026 and BOS Chat 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.*