# ChainReaction vs Chain Reaction OG

The clearest difference is rating: Chain Reaction OG at 3.0 against ChainReaction's 1.0. ChainReaction's advantage is ads (none vs shown) and update cadence (every 3 days vs monthly). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Chain Reaction OG holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

ChainReaction ships an update every 3 days, Chain Reaction OG monthly. Both last shipped on October 25, 2026.

## The numbers

| Metric | ChainReaction | Chain Reaction OG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/chainreactioncore/id1541581923/reviews) | **[3.0 (2 ratings)](https://appshunter.io/ios/app/chain-reaction-og/id6792323513/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 50 MB |
| Requires iOS | **14.5** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joerg Hoehne](https://appshunter.io/developer/1541581925) | [Mayank Kumar Gupta](https://appshunter.io/developer/1893402187) |

## What reviewers say

### ChainReaction

[App page](https://appshunter.io/ios/app/chainreactioncore/id1541581923)

Strategize and place atoms to dominate a game board. Outsmart the AI with thoughtful moves and anticipate your opponent's actions until the final outcome.

**Highlights:** Atomic placement and explosions, Board conquest gameplay, Single-player against AI, Strategic thinking required, Turn-based gameplay

**Features:** Vision Pro support

**In-app purchases:** none


### 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 ChainReaction free?

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

### Is Chain Reaction OG free?

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

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

Chain Reaction OG is rated higher. ChainReaction averages 1.0 out of 5 from 1 ratings, while Chain Reaction OG averages 3.0 from 2 ratings.

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

Chain Reaction OG shows ads; ChainReaction does not.

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

ChainReaction ships an update every 3 days, and Chain Reaction OG monthly. Most recently, ChainReaction was updated on October 25, 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.*