# Einstein's Riddle Logic Puzzle vs Flash Focus

The clearest difference is ads: Flash Focus at none against Einstein's Riddle Logic Puzzle's shown. Einstein's Riddle Logic Puzzle's advantage is update cadence (every 4 days vs every 2 months). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Einstein's Riddle Logic Puzzle sells 1 one-off in-app purchase and Flash Focus sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Einstein's Riddle Logic Puzzle ships an update every 4 days, Flash Focus every 2 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | Einstein's Riddle Logic Puzzle | Flash Focus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/einsteins-riddle-logic-puzzle/id6751275567/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 57 MB | 94 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Goossen](https://appshunter.io/developer/1834400595) | [Fawqah](https://appshunter.io/developer/1853928056) |

## What reviewers say

### Einstein's Riddle Logic Puzzle

[App page](https://appshunter.io/ios/app/einsteins-riddle-logic-puzzle/id6751275567)

Train your brain with a challenging logic puzzle game inspired by Einstein's classic Zebra Puzzle. Match scientists with their correct scientific fields by carefully following clues and using deductive reasoning. Offers multiple difficulty levels for a customizable mental workout.

**Highlights:** Logic grid puzzle gameplay, Match scientists to scientific fields, Multiple difficulty levels, Challenging logic clues, Clean, minimal design, Endless replayability

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

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


### Flash Focus

[App page](https://appshunter.io/ios/app/flash-focus-train-your-brain/id6755442521)

Test your memory and concentration with a pattern recall game. Watch a sequence, then repeat it as it gets faster and more complex. Ideal for quick daily brain training sessions.

**Highlights:** Pattern recall gameplay, Increasing speed and complexity, Endless unique patterns, Progress tracking, Play at your own pace, Clean visuals and smooth animations

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove All Ads | $2.99 | one-time |


## Frequently asked questions

### Is Einstein's Riddle Logic Puzzle free?

Einstein's Riddle Logic Puzzle is free to download, with in-app purchases available.

### Is Flash Focus free?

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

### Do Einstein's Riddle Logic Puzzle or Flash Focus have ads?

Einstein's Riddle Logic Puzzle shows ads; Flash Focus does not.

### Which is updated more often, Einstein's Riddle Logic Puzzle or Flash Focus?

Einstein's Riddle Logic Puzzle ships an update every 4 days, and Flash Focus every 2 months. Most recently, Einstein's Riddle Logic Puzzle was updated on October 30, 2026 and Flash Focus on October 30, 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.*