# Tư Duy Số vs Schulte Table

The clearest difference is in-app purchases: Tư Duy Số at none against Schulte Table's 3. Tư Duy Số also leads on iOS requirement (13.0 vs 17.0). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Schulte Table sells 3 in-app purchases, starting at $1.99 per month. Tư Duy Số asks for nothing beyond the download.

## The numbers

| Metric | Tư Duy Số | Schulte Table |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tu-duy-so/id6754550082/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 days |
| Monetization | **Free** | Freemium |
| Size | 18 MB | 7 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Do Nam](https://appshunter.io/developer/1848808297) | [Zebin Huang](https://appshunter.io/developer/1367894360) |

## What reviewers say

### Tư Duy Số

[App page](https://appshunter.io/ios/app/tu-duy-so/id6754550082)

Enhance your memory and focus with this brain training game. Challenge yourself to find numbers in ascending order quickly and accurately. It's designed to improve concentration and spatial thinking for users of all ages.

**Highlights:** Short-term memory training, Focus and concentration exercises, Spatial thinking development, Quick reflexes enhancement, Difficulty levels (10-100 numbers), Personal best time tracking, Hint system

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

**In-app purchases:** none


### Schulte Table

[App page](https://appshunter.io/ios/app/schulte-table-adhd-focusflow/id6755658248)

Enhance concentration, peripheral vision, and speed reading with a modern take on the classic Schulte Grid training. Offers multiple modes, detailed analytics, and an immersive design for daily mental workouts.

**Highlights:** Classic 5x5 grid mode, Memory mode with disappearing numbers, Adjustable grid sizes up to 7x7, Detailed progress analytics, Immersive design with animations, Integrated focus timer

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Annual Subscription | $12.99 | per year |
| Lifetime Member | $14.99 | one-time |


## Frequently asked questions

### Is Tư Duy Số free?

Tư Duy Số is free to download, with no in-app purchases.

### Is Schulte Table free?

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

### Do Tư Duy Số or Schulte Table have ads?

Neither Tư Duy Số nor Schulte Table shows ads.

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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.*