# Unfoldit vs Eureka

The clearest difference is ads: Unfoldit at none against Eureka's shown. Unfoldit also leads on review sentiment (98% vs 77%) and rating (4.9 vs 4.7). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. Unfoldit sells 7 one-off in-app purchases and Eureka sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Unfoldit holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 607 and 513 respectively. Written reviews point the same way: 98% of Unfoldit's written reviews are positive against 77% of Eureka's.

Unfoldit ships an update every 3 weeks, Eureka every 4 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Unfoldit | Eureka |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (607 ratings)](https://appshunter.io/ios/app/unfoldit-paper-puzzle-game/id1248922247/reviews)** | [4.7 (513 ratings)](https://appshunter.io/ios/app/eureka-brain-training/id1485438085/reviews) |
| Number of ratings | **607** | 513 |
| Positive reviews | **98.4% of reviews** | 76.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 9 MB | 140 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Erudite Apps LLC](https://appshunter.io/developer/1457511045) | [INFINITY GAMES, LDA](https://appshunter.io/developer/1088875165) |

## What reviewers say

### Unfoldit

[App page](https://appshunter.io/ios/app/unfoldit-paper-puzzle-game/id1248922247)

This app offers a unique puzzle experience where you visualize folding paper and predicting where holes will appear. It's designed to sharpen spatial reasoning, memory, and logic skills through over 1,800 levels. Enjoy brain training that fits into your day, with progress tracking and offline play.

**Highlights:** Visualize paper folds and hole punches, 1,885+ handcrafted levels, Hints and step-by-step animations, Strengthen focus and memory, Track stats for accuracy and speed, Offline play, iCloud sync across devices

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Medium Levels | $0.99 | one-time |
| Tiny Hint Pack | $0.99 | one-time |
| Hard Levels | $1.99 | one-time |
| Expert Levels | $2.99 | one-time |
| Small Hint Pack | $3.99 | one-time |
| Grande Hint Pack | $9.99 | one-time |
| Ream Master Hint Pack | $19.99 | one-time |

**What reviewers like**

- 👍 Solid puzzle game
- 🧠 Challenges spatial reasoning
- 💡 Innovative concept
- 🎨 Beautiful and polished design
- 🕰️ Addictive and engaging

**What reviewers complain about**

- 🐛 Occasional confusion with folding steps
- 🤔 May be too challenging for some users

**Reported bugs**

- Difficulty differentiating old and new holes in some levels
- Occasional freezing or crashing on certain devices

**Requested features**

- More advanced/difficult levels
- Ability to track progress and achievements
- Multiplayer or competitive modes


### Eureka

[App page](https://appshunter.io/ios/app/eureka-brain-training/id1485438085)

This app offers over 50 mini-games designed to test and improve various cognitive skills like logic, memory, creativity, and focus. It provides a fun and challenging way to stimulate your brain and see if you can outsmart others.

**Highlights:** Over 50 mini-games, Tests logic, memory, creativity, speed, Improves focus and brain skills, Diverse and unique puzzles, Addictive brain challenge

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 🤩 Fun and engaging gameplay
- 🧠 Challenges the mind
- 👍 Kid-friendly
- 😍 Addictive and immersive
- 💯 Great for cognitive exercise

**What reviewers complain about**

-  anúncios Ads are intrusive
- 🗑️ Paid version still has ads
- 🧩 Lacks variety in puzzles

**Reported bugs**

- Ads after every level
- Paid version with ads


## Frequently asked questions

### Is Unfoldit free?

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

### Is Eureka free?

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

### Which has better reviews, Unfoldit or Eureka?

Unfoldit is rated higher. Unfoldit averages 4.9 out of 5 from 607 ratings, while Eureka averages 4.7 from 513 ratings.

### Do Unfoldit or Eureka have ads?

Eureka shows ads; Unfoldit does not.

### Which is updated more often, Unfoldit or Eureka?

Unfoldit ships an update every 3 weeks, and Eureka every 4 weeks. Most recently, Unfoldit was updated on November 2, 2026 and Eureka on November 3, 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.*