# Blunderzone vs Chess Coach

The clearest difference is update cadence: Chess Coach at every 2 days against Blunderzone's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Blunderzone sells 2 in-app purchases, starting at $3.99 per month and Chess Coach sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Blunderzone ships an update fortnightly, Chess Coach every 2 days. The most recent releases landed on October 5, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Blunderzone | Chess Coach |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 183 MB | 217 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [RANKA s.r.o.](https://appshunter.io/developer/352576574) | [JUAN FRANCISCO JIMENEZ MARTIN](https://appshunter.io/developer/6790447115) |

## What reviewers say

### Blunderzone

[App page](https://appshunter.io/ios/app/blunderzone/id6763366751)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blunderzone Basic | $3.99 | per month |
| Blunderzone Premium | $6.99 | per month |


### Chess Coach

[App page](https://appshunter.io/ios/app/chess-coach-ai-chess-tutor/id6790447113)

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bronze Donation | $1.49 | one-time |
| 125 Credits | $2.19 | one-time |
| 250 Credits | $2.29 | one-time |
| Silver Donation | $3.29 | one-time |
| 500 Credits | $3.69 | one-time |
| CheesCoach Premium | $4.39 | one-time |
| Gold Donation | $8.39 | one-time |


## Frequently asked questions

### Is Blunderzone free?

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

### Is Chess Coach free?

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

### Do Blunderzone or Chess Coach have ads?

Neither Blunderzone nor Chess Coach shows ads.

### Which is updated more often, Blunderzone or Chess Coach?

Blunderzone ships an update fortnightly, and Chess Coach every 2 days. Most recently, Blunderzone was updated on October 5, 2026 and Chess Coach on October 22, 2026.

---

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