# Rival Chess vs Blunderzone

Rival Chess and Blunderzone are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Rival Chess sells 1 one-off in-app purchase and Blunderzone sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Rival Chess ships an update every 5 days, Blunderzone weekly. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Rival Chess | Blunderzone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/rival-chess-be-the-champion/id6762065554/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 94.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 227 MB | 187 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rafael Leite](https://appshunter.io/developer/606207054) | [RANKA s.r.o.](https://appshunter.io/developer/352576574) |

## What reviewers say

### Rival Chess

[App page](https://appshunter.io/ios/app/rival-chess-be-the-champion/id6762065554)

This app offers a unique chess experience focused on arcade-style gameplay and skill progression. It simulates realistic opponent behavior and turns your own mistakes into personalized training drills. Progress through championships and face increasingly challenging AI opponents.

**Highlights:** Arcade-style chess gameplay, Realistic AI opponent behavior, Personalized mistake-based training drills, Progressive championship system, Offline play on device, AI trained on human games

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rival Chess — Lifetime | $7.99 | one-time |


### Blunderzone

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

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blunderzone Basic | $3.99 | per month |
| Blunderzone Premium | $6.99 | per month |
| 20 AI explanations | $4.00 | one-time |
| 100 AI explanations | $18.00 | one-time |


## Frequently asked questions

### Is Rival Chess free?

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

### Is Blunderzone free?

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

### Do Rival Chess or Blunderzone have ads?

Neither Rival Chess nor Blunderzone shows ads.

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

Rival Chess ships an update every 5 days, and Blunderzone weekly. Most recently, Rival Chess was updated on November 7, 2026 and Blunderzone on November 5, 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.*