# K vs Mathji Math Practice & Quizzes

The clearest difference is update cadence: K at every 2 weeks against Mathji Math Practice & Quizzes's every 2 months. K also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

K ships an update every 2 weeks, Mathji Math Practice & Quizzes every 2 months. Both last shipped on November 5, 2026.

## The numbers

| Metric | K | Mathji Math Practice & Quizzes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mathji-math-practice-and-quizzes/id6776072306/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | — | Free |
| Size | 40 MB | 43 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [FIELDS-IQ LLC](https://appshunter.io/developer/1884210066) | [Yu-Hui Chen](https://appshunter.io/developer/364246330) |

## What reviewers say

### K

[App page](https://appshunter.io/ios/app/k-12pro/id6769632036)

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

**In-app purchases:** none


### Mathji Math Practice & Quizzes

[App page](https://appshunter.io/ios/app/mathji-math-practice-and-quizzes/id6776072306)

This app offers adaptive math practice for students in grades 1-12, generating unique questions and adjusting difficulty based on performance. It tracks progress, provides personalized review, and includes a parent dashboard for monitoring. Kids can earn rewards to stay motivated.

**Highlights:** Smart question generation (200+ topics), Adaptive difficulty adjustment, Mistake notebook and personalized review, PIN-protected parent dashboard, Reward system for motivation, Multilingual support (5 languages)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is K free?

K is free to download, with no in-app purchases.

### Is Mathji Math Practice & Quizzes free?

Mathji Math Practice & Quizzes is free to download, with no in-app purchases.

### Do K or Mathji Math Practice & Quizzes have ads?

Neither K nor Mathji Math Practice & Quizzes shows ads.

### Which is updated more often, K or Mathji Math Practice & Quizzes?

K ships an update every 2 weeks, and Mathji Math Practice & Quizzes every 2 months. Most recently, K was updated on November 5, 2026 and Mathji Math Practice & Quizzes on November 5, 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.*