# Concentration training. vs ChainASC

The clearest difference is ads: ChainASC at none against Concentration training.'s shown. ChainASC also leads on update cadence (every 9 days vs every 5 weeks). On price, in-app purchases, 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 and ChainASC sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Concentration training. ships an update every 5 weeks, ChainASC every 9 days. The most recent releases landed on September 23, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Concentration training. | ChainASC |
| --- | --- | --- |
| 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 | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 18 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Olena Gotsulyak](https://appshunter.io/developer/1699979294) | [Furkan Kilic](https://appshunter.io/developer/1895067830) |

## 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 |


### ChainASC

[App page](https://appshunter.io/ios/app/chainasc-habit-tracker/id6762902546)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly! | $0.99 | per month |
| Premium Yearly! | $9.99 | per year |


## Frequently asked questions

### Is Concentration training. free?

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

### Is ChainASC free?

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

### Do Concentration training. or ChainASC have ads?

Concentration training. shows ads; ChainASC does not.

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

Concentration training. ships an update every 5 weeks, and ChainASC every 9 days. Most recently, Concentration training. was updated on September 23, 2026 and ChainASC on September 14, 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.*