# Find 5 Differences Train Brain vs DropOS

The clearest difference is review sentiment: DropOS at 100% against Find 5 Differences Train Brain's 70%. DropOS also leads on rating (5.0 vs 4.6) and update cadence (every 6 days vs every 3 weeks). Find 5 Differences Train Brain's advantage is ratings volume (1.5K vs 2) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DropOS holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Find 5 Differences Train Brain has 1.5K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 70% of Find 5 Differences Train Brain's written reviews are positive against 100% of DropOS's.

Find 5 Differences Train Brain ships an update every 3 weeks, DropOS every 6 days. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Find 5 Differences Train Brain | DropOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (1.5K ratings)](https://appshunter.io/ios/app/find-5-differences-train-brain/id6481528942/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/dropos-marble-machine/id6788594506/reviews)** |
| Number of ratings | **1.5K** | 2 |
| Positive reviews | 70.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | Free | Free |
| Size | 136 MB | 28 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Smart Project GmbH](https://appshunter.io/developer/1462157824) | [LaunchKitOS](https://appshunter.io/developer/6820402257) |

## What reviewers say

### Find 5 Differences Train Brain

[App page](https://appshunter.io/ios/app/find-5-differences-train-brain/id6481528942)

Embark on a visual adventure to find hidden differences between seemingly identical pictures. Test your focus and speed with challenging levels and a ticking timer. Utilize helpful boosters to overcome difficult puzzles and enjoy endless fun.

**Highlights:** Find hidden differences, Challenging levels, Pesky timer, Dazzling boosters, Loads of levels, Rewarding gameplay

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

**In-app purchases:** none


### DropOS

[App page](https://appshunter.io/ios/app/dropos-marble-machine/id6788594506)

Engage in a physics-based puzzle game where you strategically drop marbles into a contraption. Plan the sequence of drops to guide each marble into its matching bin, with each marble's passage altering the machine for the next.

**Highlights:** Physics-based contraption puzzles, Strategic marble dropping, 100 hand-designed levels, Weekly leaderboard, Earn in-game cogs, Bonus brass pin board

**In-app purchases:** none


## Frequently asked questions

### Is Find 5 Differences Train Brain free?

Find 5 Differences Train Brain is free to download, with no in-app purchases.

### Is DropOS free?

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

### Which has better reviews, Find 5 Differences Train Brain or DropOS?

DropOS is rated higher. Find 5 Differences Train Brain averages 4.6 out of 5 from 1.5K ratings, while DropOS averages 5.0 from 2 ratings.

### Do Find 5 Differences Train Brain or DropOS have ads?

Neither Find 5 Differences Train Brain nor DropOS shows ads.

### Which is updated more often, Find 5 Differences Train Brain or DropOS?

Find 5 Differences Train Brain ships an update every 3 weeks, and DropOS every 6 days. Most recently, Find 5 Differences Train Brain was updated on October 8, 2026 and DropOS on October 11, 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.*