# FlashMath (math flash cards) vs Tang Soo Do Reference

The clearest difference is price: Tang Soo Do Reference at Free against FlashMath (math flash cards)'s $0.99. Tang Soo Do Reference also leads on update cadence (every 2 weeks vs every 6 months). FlashMath (math flash cards)'s advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Tang Soo Do Reference is free to download; FlashMath (math flash cards) costs $0.99 up front. Tang Soo Do Reference sells 1 in-app purchase, starting at $1.99 per month. FlashMath (math flash cards) asks for nothing beyond the download.

FlashMath (math flash cards) ships an update every 6 months, Tang Soo Do Reference every 2 weeks. The most recent releases landed on October 12, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | FlashMath (math flash cards) | Tang Soo Do Reference |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.4 (48 ratings)](https://appshunter.io/ios/app/flashmath-math-flash-cards/id285535291/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | 69.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 3 MB | 88 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [PalaSoftware Inc.](https://appshunter.io/developer/282914457) | [Steven Elmore](https://appshunter.io/developer/1775289821) |

## What reviewers say

### FlashMath (math flash cards)

[App page](https://appshunter.io/ios/app/flashmath-math-flash-cards/id285535291)

This app offers a fun and configurable way to practice math skills. It covers basic arithmetic to multiplication and division, with adjustable difficulty and time limits. Ideal for all ages seeking to improve their math fluency or get a quick mental workout.

**Highlights:** Addition and subtraction practice, Multiplication and division practice, Configurable number ranges, Adjustable number of questions, Optional time limits per question, Suitable for all ages

**Features:** macOS Compatibility

**In-app purchases:** none


### Tang Soo Do Reference

[App page](https://appshunter.io/ios/app/tang-soo-do-reference/id6737467644)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Monthly | $1.99 | per month |


## Frequently asked questions

### Is FlashMath (math flash cards) free?

FlashMath (math flash cards) costs $0.99, with no in-app purchases.

### Is Tang Soo Do Reference free?

Tang Soo Do Reference is free to download, with in-app purchases available.

### Do FlashMath (math flash cards) or Tang Soo Do Reference have ads?

Tang Soo Do Reference shows ads; FlashMath (math flash cards) does not.

### Which is updated more often, FlashMath (math flash cards) or Tang Soo Do Reference?

FlashMath (math flash cards) ships an update every 6 months, and Tang Soo Do Reference every 2 weeks. Most recently, FlashMath (math flash cards) was updated on October 12, 2026 and Tang Soo Do Reference on September 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*