# CRx vs Chain Reaction OG

The clearest difference is rating: CRx at 4.2 against Chain Reaction OG's 3.0. CRx also leads on ratings volume (26 vs 2) and iOS requirement (15.0 vs 18.0). Chain Reaction OG's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 3 months). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. CRx sells 1 one-off in-app purchase. Chain Reaction OG asks for nothing beyond the download.

CRx holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: CRx has 26 ratings behind it against 2, so its average is the more settled of the two.

CRx ships an update every 3 months, Chain Reaction OG monthly. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CRx | Chain Reaction OG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (26 ratings)](https://appshunter.io/ios/app/crx/id1495577612/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/chain-reaction-og/id6792323513/reviews) |
| Number of ratings | **26** | 2 |
| Positive reviews | 69.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 64 MB | 50 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Abhishek Aryan](https://appshunter.io/developer/1365121366) | [Mayank Kumar Gupta](https://appshunter.io/developer/1893402187) |

## What reviewers say

### CRx

[App page](https://appshunter.io/ios/app/crx/id1495577612)

Engage in an addictive strategy game where players aim to control the board by eliminating opponents' orbs. Place orbs strategically, triggering chain reactions to claim cells and outmaneuver rivals. Enjoy single-player or multiplayer modes with elegant gameplay and theme variations.

**Highlights:** Multiplayer (2-8 players), Eliminate opponent orbs, Chain reaction orb explosions, CPU mode for single-player, Theme variations (Black/White)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Chain Reaction OG

[App page](https://appshunter.io/ios/app/chain-reaction-og/id6792323513)

Engage in a fast-paced local multiplayer strategy game for 2-8 players. Place atoms to trigger explosive chain reactions, capture the board, and eliminate opponents. Simple to learn but requires clever planning and timing for mastery.

**Highlights:** Local multiplayer for 2-8 players, Fast-paced strategy matches, Customizable board sizes and styles, Simple controls, No account required, Unlockable orb finishes and arena skins

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

**In-app purchases:** none


## Frequently asked questions

### Is CRx free?

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

### Is Chain Reaction OG free?

Chain Reaction OG is free to download, with no in-app purchases.

### Which has better reviews, CRx or Chain Reaction OG?

CRx is rated higher. CRx averages 4.2 out of 5 from 26 ratings, while Chain Reaction OG averages 3.0 from 2 ratings.

### Do CRx or Chain Reaction OG have ads?

Both CRx and Chain Reaction OG show ads.

### Which is updated more often, CRx or Chain Reaction OG?

CRx ships an update every 3 months, and Chain Reaction OG monthly. Most recently, CRx was updated on October 21, 2026 and Chain Reaction OG on October 25, 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.*