# Chess Prep Pro Openings vs Blazz!

The clearest difference is in-app purchases: Blazz! at none against Chess Prep Pro Openings's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Chess Prep Pro Openings sells 3 in-app purchases, starting at $3.99 per month. Blazz! asks for nothing beyond the download.

Chess Prep Pro Openings ships an update fortnightly, Blazz! weekly. The most recent releases landed on September 22, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Chess Prep Pro Openings | Blazz! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (20 ratings)](https://appshunter.io/ios/app/chess-prep-pro-openings/id1606629475/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 73.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 213 MB | 53 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tomasz Bogun](https://appshunter.io/developer/1502902123) | [Vladyslav Prymak](https://appshunter.io/developer/1629209522) |

## What reviewers say

### Chess Prep Pro Openings

[App page](https://appshunter.io/ios/app/chess-prep-pro-openings/id1606629475)

Master chess openings by building custom repertoires and training your memory. Analyze opponent moves, discover blind spots, and utilize an advanced engine for in-depth preparation. Expand your knowledge with downloadable repertoires and import/export PGNs.

**Highlights:** Custom chess opening repertoires, Repertoire training and memory sharpening, Blind spot finder against player games, Chess openings player database, Advanced StockFish engine analysis, Downloadable and importable repertoires

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly premium subscription | $3.99 | per month |
| Yearly premium | $24.99 | per year |
| Lifetime Premium | $59.99 | one-time |


### Blazz!

[App page](https://appshunter.io/ios/app/blazz/id6762187872)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chess Prep Pro Openings free?

Chess Prep Pro Openings is free to download, with in-app purchases available.

### Is Blazz! free?

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

### Do Chess Prep Pro Openings or Blazz! have ads?

Both Chess Prep Pro Openings and Blazz! show ads.

### Which is updated more often, Chess Prep Pro Openings or Blazz!?

Chess Prep Pro Openings ships an update fortnightly, and Blazz! weekly. Most recently, Chess Prep Pro Openings was updated on September 22, 2026 and Blazz! on September 10, 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.*