# Deduce vs Chess Peace

The clearest difference is update cadence: Chess Peace at every 2 weeks against Deduce's every 8 months. Chess Peace also leads on monetization model (free vs free with in-app purchases) and ratings volume (133 vs 2). Deduce's advantage is review sentiment (100% vs 89%) and iOS requirement (13.0 vs 17.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Deduce sells 10 one-off in-app purchases and Chess Peace sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Deduce against 4.9 for Chess Peace. That said, the two scores are not equally well evidenced: Chess Peace has 133 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 100% of Deduce's written reviews are positive against 89% of Chess Peace's.

Deduce ships an update every 8 months, Chess Peace every 2 weeks. The most recent releases landed on September 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Deduce | Chess Peace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/deduce/id6745759798/reviews)** | [4.9 (133 ratings)](https://appshunter.io/ios/app/chess-peace/id6760270817/reviews) |
| Number of ratings | 2 | **133** |
| Positive reviews | **100.0% of reviews** | 89.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 76 MB | 185 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | +4 |
| Developer | [Mark Mainwood](https://appshunter.io/developer/769006329) | [Sam Shepherd](https://appshunter.io/developer/1883556970) |

## What reviewers say

### Deduce

[App page](https://appshunter.io/ios/app/deduce/id6745759798)

Engage your mind with daily logic puzzles designed for all skill levels. Explore a vast archive of handcrafted challenges, with themed packs available for purchase. Enjoy a distraction-free experience focused purely on gameplay.

**Highlights:** Three daily puzzles (Easy, Medium, Hard), Instant access to over 100 puzzles, Themed puzzle packs (free and paid), In-app tutorial and strategy guide, Handcrafted puzzles with unique solutions, Ad-free, timer-free gameplay

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kids' Pack 1 | $0.99 | one-time |
| Hard Pack 1 | $0.99 | one-time |
| Just + and x 1 | $0.99 | one-time |
| Mixed Pack 1 | $0.99 | one-time |
| Just + and > 1 | $0.99 | one-time |
| Just x and > 1 | $0.99 | one-time |
| Medium Pack 1 | $0.99 | one-time |
| Easy Pack 1 | $0.99 | one-time |
| Access Archives | $1.99 | one-time |
| Extra Hard Pack 1 | $1.99 | one-time |


### Chess Peace

[App page](https://appshunter.io/ios/app/chess-peace/id6760270817)

Engage in a peaceful chess puzzle experience offline, with no ads or account required. It offers thousands of challenges suitable for all skill levels, from beginners to grandmasters, with daily puzzles and extensive customization options.

**Highlights:** Offline play, No ads or account required, Thousands of puzzles, Daily Puzzle feature, Extensive customization, Progress syncing via iCloud, Accessibility options

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $8.99 | one-time |


## Frequently asked questions

### Is Deduce free?

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

### Is Chess Peace free?

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

### Which has better reviews, Deduce or Chess Peace?

Deduce is rated higher. Deduce averages 5.0 out of 5 from 2 ratings, while Chess Peace averages 4.9 from 133 ratings.

### Do Deduce or Chess Peace have ads?

Neither Deduce nor Chess Peace shows ads.

### Which is updated more often, Deduce or Chess Peace?

Deduce ships an update every 8 months, and Chess Peace every 2 weeks. Most recently, Deduce was updated on September 24, 2026 and Chess Peace on October 15, 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.*