# Puzzle IO vs MAX Geheugentrainer

The clearest difference is in-app purchases: MAX Geheugentrainer at none against Puzzle IO's 1. MAX Geheugentrainer also leads on ads (none vs shown) and review sentiment (88% vs 74%). Puzzle IO's advantage is update cadence (every 3 weeks vs every 9 months) and ratings volume (362 vs 7). On price, rating, device support and iOS requirement there is nothing between them.

Both are free to download. Puzzle IO sells 1 one-off in-app purchase. MAX Geheugentrainer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Puzzle IO against 4.7 for MAX Geheugentrainer. That said, the two scores are not equally well evidenced: Puzzle IO has 362 ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 74% of Puzzle IO's written reviews are positive against 88% of MAX Geheugentrainer's.

Puzzle IO ships an update every 3 weeks, MAX Geheugentrainer every 9 months. The most recent releases landed on November 11, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Puzzle IO | MAX Geheugentrainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (362 ratings)](https://appshunter.io/ios/app/puzzle-io-binary-sudoku/id1145765167/reviews) | **[4.7 (7 ratings)](https://appshunter.io/ios/app/max-geheugentrainer/id1225532573/reviews)** |
| Number of ratings | **362** | 7 |
| Positive reviews | 74.3% of reviews | **87.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 107 MB | 128 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [99 Up Games](https://appshunter.io/developer/567396068) | [Omroepvereniging MAX](https://appshunter.io/developer/1191813393) |

## 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


### MAX Geheugentrainer

[App page](https://appshunter.io/ios/app/max-geheugentrainer/id1225532573)

Train your brain with a variety of fun and challenging memory games. Improve concentration and track your progress with daily tests. Play anytime, even offline.

**Highlights:** 14 mini-games, Memory, Math, Concentration, Language categories, Daily 10-minute tests, Progress tracking, Offline play, Multiple difficulty levels

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Puzzle IO free?

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

### Is MAX Geheugentrainer free?

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

### Which has better reviews, Puzzle IO or MAX Geheugentrainer?

MAX Geheugentrainer is rated higher. Puzzle IO averages 4.6 out of 5 from 362 ratings, while MAX Geheugentrainer averages 4.7 from 7 ratings.

### Do Puzzle IO or MAX Geheugentrainer have ads?

Puzzle IO shows ads; MAX Geheugentrainer does not.

### Which is updated more often, Puzzle IO or MAX Geheugentrainer?

Puzzle IO ships an update every 3 weeks, and MAX Geheugentrainer every 9 months. Most recently, Puzzle IO was updated on November 11, 2026 and MAX Geheugentrainer on November 2, 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.*