# ACT Math Flashcards vs Krinsky's TKD

The clearest difference is in-app purchases: Krinsky's TKD at none against ACT Math Flashcards's 1. Krinsky's TKD also leads on device support (3 vs 1). ACT Math Flashcards's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On price and iOS requirement there is nothing between them.

Both are free to download. ACT Math Flashcards sells 1 in-app purchase, starting at $6.99 per month. Krinsky's TKD asks for nothing beyond the download.

ACT Math Flashcards ships an update every 2 weeks, Krinsky's TKD every 2 months. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | ACT Math Flashcards | Krinsky's TKD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (9 ratings)](https://appshunter.io/ios/app/act-math-flashcards/id6449164816/reviews)** | — |
| Number of ratings | **9** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 102 MB | 63 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Srinath Sampath](https://appshunter.io/developer/1687877270) | [Tapp, LLC](https://appshunter.io/developer/1466940621) |

## What reviewers say

### ACT Math Flashcards

[App page](https://appshunter.io/ios/app/act-math-flashcards/id6449164816)

Master essential ACT Math concepts with comprehensive flashcards. This app offers instant recall of formulas and techniques to boost speed and confidence on test day. Includes free sample cards with options to unlock the full content.

**Highlights:** 437 comprehensive flashcards, Concepts, formulas, and techniques, Spaced repetition learning, Practice questions for each concept, Categorized by math subject, Free sample cards available

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $6.99 | per month |


### Krinsky's TKD

[App page](https://appshunter.io/ios/app/krinskys-tkd/id6744665816)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ACT Math Flashcards free?

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

### Is Krinsky's TKD free?

Krinsky's TKD is free to download, with no in-app purchases.

### Do ACT Math Flashcards or Krinsky's TKD have ads?

Krinsky's TKD shows ads; ACT Math Flashcards does not.

### Which is updated more often, ACT Math Flashcards or Krinsky's TKD?

ACT Math Flashcards ships an update every 2 weeks, and Krinsky's TKD every 2 months. Most recently, ACT Math Flashcards was updated on October 24, 2026 and Krinsky's TKD on October 8, 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.*