# The Hamiltonian Circuit vs Neutralize +

The clearest difference is price: The Hamiltonian Circuit at Free against Neutralize +'s $0.99. The Hamiltonian Circuit also leads on ratings volume (33 vs 5). Neutralize +'s advantage is review sentiment (100% vs 59%) and ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

The Hamiltonian Circuit is free to download; Neutralize + costs $0.99 up front. The Hamiltonian Circuit sells 4 one-off in-app purchases and Neutralize + sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Neutralize + holds the better App Store score, 4.2 against 3.8. That said, the two scores are not equally well evidenced: The Hamiltonian Circuit has 33 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 59% of The Hamiltonian Circuit's written reviews are positive against 100% of Neutralize +'s.

The Hamiltonian Circuit ships an update every 5 weeks, Neutralize + every 9 days. Both last shipped on November 7, 2026.

## The numbers

| Metric | The Hamiltonian Circuit | Neutralize + |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [3.8 (33 ratings)](https://appshunter.io/ios/app/the-hamiltonian-circuit/id1484345208/reviews) | **[4.2 (5 ratings)](https://appshunter.io/ios/app/neutralize-plus-o/id6667096771/reviews)** |
| Number of ratings | **33** | 5 |
| Positive reviews | 59.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 9 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 64 MB | 30 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Good Thinking Games](https://appshunter.io/developer/1484345207) | [Air Pie LLC](https://appshunter.io/developer/1459420507) |

## What reviewers say

### The Hamiltonian Circuit

[App page](https://appshunter.io/ios/app/the-hamiltonian-circuit/id1484345208)

This challenging puzzle game requires you to find a continuous circuit that visits every square on a grid without crossing itself or walls. Progress from simple grids to complex, large-scale challenges that test your abstract thinking and problem-solving skills. Hints are available to guide you when you get stuck.

**Highlights:** Visit every square on the grid, Avoid walls and self-crossing, Progressive grid sizes (4x4 to 20x20), Hint system for assistance, Automatic progress saving, Single solution per puzzle

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack of 50 neurons | $0.99 | one-time |
| Pack of 250 neurons | $3.99 | one-time |
| Remove Ads | $4.99 | one-time |
| Pack of 750 neurons | $9.99 | one-time |


### Neutralize +

[App page](https://appshunter.io/ios/app/neutralize-plus-o/id6667096771)

A minimalist puzzle game where you swipe tiles to combine opposites, creating neutral spaces to clear the board and increase your score. It offers strategic depth with a focus on chain reactions and a clean, glassmorphic design for an endless challenge.

**Highlights:** Swipe to combine opposite tiles, Create neutral spaces, Strategic chain reactions, Minimalist glassmorphic design, Endless scoring challenge

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Neutralize Forever | $2.99 | one-time |


## Frequently asked questions

### Is The Hamiltonian Circuit free?

The Hamiltonian Circuit is free to download, with in-app purchases available.

### Is Neutralize + free?

Neutralize + costs $0.99, and also offers in-app purchases.

### Which has better reviews, The Hamiltonian Circuit or Neutralize +?

Neutralize + is rated higher. The Hamiltonian Circuit averages 3.8 out of 5 from 33 ratings, while Neutralize + averages 4.2 from 5 ratings.

### Do The Hamiltonian Circuit or Neutralize + have ads?

The Hamiltonian Circuit shows ads; Neutralize + does not.

### Which is updated more often, The Hamiltonian Circuit or Neutralize +?

The Hamiltonian Circuit ships an update every 5 weeks, and Neutralize + every 9 days. Most recently, The Hamiltonian Circuit was updated on November 7, 2026 and Neutralize + on November 7, 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.*