# Deduce vs Star Battle

The clearest difference is review sentiment: Deduce at 100% against Star Battle's 58%. Deduce also leads on ads (none vs shown) and rating (5.0 vs 4.6). Star Battle's advantage is update cadence (every 3 weeks vs every 8 months) and ratings volume (70 vs 2). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Deduce sells 10 one-off in-app purchases and Star Battle sells 9 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Deduce holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Star Battle has 70 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Deduce's written reviews are positive against 58% of Star Battle's.

Deduce ships an update every 8 months, Star Battle every 3 weeks. The most recent releases landed on November 5, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Deduce | Star Battle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/deduce/id6745759798/reviews)** | [4.6 (70 ratings)](https://appshunter.io/ios/app/star-battle-grid-logic-puzzle/id6751416837/reviews) |
| Number of ratings | 2 | **70** |
| Positive reviews | **100.0% of reviews** | 58.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 76 MB | 150 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Mark Mainwood](https://appshunter.io/developer/769006329) | [Beijing PixelDian Technology Co., Ltd.](https://appshunter.io/developer/1762246592) |

## 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 |


### Star Battle

[App page](https://appshunter.io/ios/app/star-battle-grid-logic-puzzle/id6751416837)

This logic puzzle game challenges you to place stars on a grid, ensuring each row, column, and region has the correct number. With hundreds of handcrafted puzzles and daily challenges, it offers a relaxing yet brain-testing experience.

**Highlights:** Unique star placement gameplay, Hundreds of handcrafted puzzles, Daily challenges, Multiple difficulty levels, Brain training for logic and focus, Relaxing visual design

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hint Pack 1 | $0.99 | one-time |
| Hint Pack 2 | $1.99 | one-time |
| Master Pack 10x10 IV | $2.99 | one-time |
| Master Pack 10x10 V | $2.99 | one-time |
| Master Pack 10x10 I | $2.99 | one-time |
| Master Pack 10x10 II | $2.99 | one-time |
| Hint Pack 3 | $4.99 | one-time |
| Remove Forced Ads | $6.99 | one-time |
| Hint Pack 4 | $9.99 | one-time |


## Frequently asked questions

### Is Deduce free?

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

### Is Star Battle free?

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

### Which has better reviews, Deduce or Star Battle?

Deduce is rated higher. Deduce averages 5.0 out of 5 from 2 ratings, while Star Battle averages 4.6 from 70 ratings.

### Do Deduce or Star Battle have ads?

Star Battle shows ads; Deduce does not.

### Which is updated more often, Deduce or Star Battle?

Deduce ships an update every 8 months, and Star Battle every 3 weeks. Most recently, Deduce was updated on November 5, 2026 and Star Battle on November 8, 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.*