# Induction vs Pure Logic

The clearest difference is in-app purchases: Induction at none against Pure Logic's 2. Induction also leads on iOS requirement (15.0 vs 17.0). Pure Logic's advantage is ads (none vs shown) and update cadence (daily vs every 2 days). On price and device support there is nothing between them.

Both are free to download. Pure Logic sells 2 one-off in-app purchases. Induction asks for nothing beyond the download.

Induction ships an update every 2 days, Pure Logic daily. Both last shipped on October 31, 2026.

## The numbers

| Metric | Induction | Pure Logic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pure-logic-brain-puzzles/id6810033029/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 days | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 86 MB | 110 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Connexus Digital, LLC](https://appshunter.io/developer/1869669203) | [贵权 陈](https://appshunter.io/developer/6809852956) |

## What reviewers say

### Induction

[App page](https://appshunter.io/ios/app/induction-logic-deduction/id6804293700)

**In-app purchases:** none


### Pure Logic

[App page](https://appshunter.io/ios/app/pure-logic-brain-puzzles/id6810033029)

Engage your mind with six distinct logic puzzle games including Sudoku, Nonogram, and Queens. Enjoy adjustable difficulty, helpful hints, and customizable themes. Play at your own pace with progress saved locally.

**Highlights:** Six logic puzzle types, Adjustable difficulty levels, Hint and undo options, Customizable themes and board skins, Local progress saving, No account required

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Polar Crystal | $1.99 | one-time |
| Pure Logic Pro | $3.99 | one-time |


## Frequently asked questions

### Is Induction free?

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

### Is Pure Logic free?

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

### Do Induction or Pure Logic have ads?

Induction shows ads; Pure Logic does not.

### Which is updated more often, Induction or Pure Logic?

Induction ships an update every 2 days, and Pure Logic daily. Most recently, Induction was updated on October 31, 2026 and Pure Logic on October 31, 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.*