# 11x13 vs Flash Math

The clearest difference is monetization model: 11x13 at free against Flash Math's free with in-app purchases. Flash Math's advantage is iOS requirement (13.0 vs 15.6). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. 11x13 sells 2 in-app purchases, starting at $0.99 per month and Flash Math sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 11x13 | Flash Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/flash-math-mental-math-cards/id6759207005/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 23 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Matthias Hennemeyer](https://appshunter.io/developer/352918135) | [Cody Palmer](https://appshunter.io/developer/1877411458) |

## What reviewers say

### 11x13

[App page](https://appshunter.io/ios/app/11x13/id1345978316)

This app offers daily math practice to improve number familiarity and overcome math reservations. It focuses on basic arithmetic operations with visual progress tracking through charts and grids. Daily practice sessions can enhance fundamental mathematical skills.

**Highlights:** Daily math practice, Basic arithmetic operations, Progress visualization, Personalized calculation levels, Leaderboard integration, Number range grids

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Everything – monthly | $0.99 | per month |
| Everything | $5.99 | one-time |


### Flash Math

[App page](https://appshunter.io/ios/app/flash-math-mental-math-cards/id6759207005)

Practice mental math with interactive flashcards. Choose from various game modes and math categories, including addition, subtraction, and multiplication. Track your progress and unlock achievements as you improve your math skills.

**Highlights:** Multiple game modes (timed, untimed, streak), Addition, subtraction, and multiplication practice, Grade-level specific problem sets, Progress tracking and statistics, Achievement unlocking, Privacy-focused, on-device progress storage

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Color Theme Pack | $4.99 | one-time |
| Gold Member | $24.99 | one-time |


## Frequently asked questions

### Is 11x13 free?

11x13 is free to download, with in-app purchases available.

### Is Flash Math free?

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

### Do 11x13 or Flash Math have ads?

Neither 11x13 nor Flash Math 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.*