# Concentration training. vs Boat Maintenance

The clearest difference is ads: Boat Maintenance at none against Concentration training.'s shown. Boat Maintenance also leads on update cadence (every 2 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 Boat Maintenance sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Concentration training. ships an update every 5 weeks, Boat Maintenance every 2 days. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Concentration training. | Boat Maintenance |
| --- | --- | --- |
| 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 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 11 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Olena Gotsulyak](https://appshunter.io/developer/1699979294) | [IT Consult Solutions](https://appshunter.io/developer/1779476252) |

## 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 |


### Boat Maintenance

[App page](https://appshunter.io/ios/app/boat-maintenance/id6770528480)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $5.99 | per month |
| Premium | $49.99 | per year |


## Frequently asked questions

### Is Concentration training. free?

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

### Is Boat Maintenance free?

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

### Do Concentration training. or Boat Maintenance have ads?

Concentration training. shows ads; Boat Maintenance does not.

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

Concentration training. ships an update every 5 weeks, and Boat Maintenance every 2 days. Most recently, Concentration training. was updated on September 23, 2026 and Boat Maintenance on September 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*