# Puzzle IO vs Circuital

The clearest difference is ads: Circuital at none against Puzzle IO's shown. Puzzle IO's advantage is update cadence (every 3 weeks vs every 3 months) and iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Puzzle IO sells 1 one-off in-app purchase and Circuital sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Puzzle IO ships an update every 3 weeks, Circuital every 3 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Puzzle IO | Circuital |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (362 ratings)](https://appshunter.io/ios/app/puzzle-io-binary-sudoku/id1145765167/reviews)** | — |
| Number of ratings | **362** | — |
| Positive reviews | 74.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 107 MB | 7 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [99 Up Games](https://appshunter.io/developer/567396068) | [Mario Steenbergen](https://appshunter.io/developer/1896445967) |

## What reviewers say

### Puzzle IO

[App page](https://appshunter.io/ios/app/puzzle-io-binary-sudoku/id1145765167)

Experience a modern, fast-paced logic puzzle game based on binary Sudoku. Fill grids with 0s and 1s following specific rules, earn bonuses with a smart point system, and compete globally. Offers endless challenges across six difficulty levels.

**Highlights:** Fill 10x10 grids with 0s and 1s, Equal 0s and 1s per row/column, No three identical numbers in a row, Smart point system with bonuses, Time-based multipliers for higher scores, Game Center support and global leaderboards, Six difficulty levels, Unlimited unique puzzles

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |

**What reviewers like**

- 👍 Simple mechanics
- 👍 Easy to play one-handed
- 👍 Different difficulty modes
- 👍 Guess function if you're not sure of your options
- 👍 Fun and requires the right level of brain power while not being too difficult

**What reviewers complain about**

- 🐛 Hint function is not very useful
- 🐛 'Watch video' for hints doesn't work on the paid ad-free version
- 🔋 High battery consumption
- 💸 Too many ads and long ad breaks
- 🐛 Incorrect error detection on completed rows/columns

**Reported bugs**

- Incorrect error detection on completed rows/columns
- Frequent crashes and bugs
- Game sometimes freezes or becomes unresponsive
- Ads not loading properly, preventing gameplay

**Requested features**

- Dark mode option
- Better hint system that explains the logic
- Option to turn off row/column completion notifications
- More challenging puzzle levels
- Ability to create and save custom puzzles


### Circuital

[App page](https://appshunter.io/ios/app/circuital/id6770034336)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Circuital Pro | $2.99 | one-time |


## Frequently asked questions

### Is Puzzle IO free?

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

### Is Circuital free?

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

### Do Puzzle IO or Circuital have ads?

Puzzle IO shows ads; Circuital does not.

### Which is updated more often, Puzzle IO or Circuital?

Puzzle IO ships an update every 3 weeks, and Circuital every 3 months. Most recently, Puzzle IO was updated on October 23, 2026 and Circuital on October 24, 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.*