# Kata Mastery vs OneCrunches

The clearest difference is in-app purchases: Kata Mastery at none against OneCrunches's 4. Kata Mastery also leads on ratings volume (3 vs 1) and iOS requirement (14.0 vs 17.6). OneCrunches's advantage is update cadence (weekly vs every 23 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. OneCrunches sells 4 one-off in-app purchases. Kata Mastery asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Kata Mastery against 5.0 for OneCrunches. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Kata Mastery ships an update every 23 months, OneCrunches weekly. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Kata Mastery | OneCrunches |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/kata-mastery/id1660126416/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/onecrunches/id6746304746/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 23 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 47 MB | 12 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [AmeriKick Martial Arts-Overland Park](https://appshunter.io/developer/1489094457) | [Jared Ewing](https://appshunter.io/developer/1412568000) |

## What reviewers say

### Kata Mastery

[App page](https://appshunter.io/ios/app/kata-mastery/id1660126416)

This app allows members and interested individuals to engage with award-winning martial arts programs. Users can register for events, enroll in classes, view curriculum, track progress, and manage schedules. It also facilitates communication and referrals within the community.

**Highlights:** Event registration, Program enrollment, Curriculum video access, Progress tracking, Class scheduling, Community messaging

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

**In-app purchases:** none


### OneCrunches

[App page](https://appshunter.io/ios/app/onecrunches/id6746304746)

This app provides a focused and reliable way to track your crunch workouts. It offers features like goal setting, progress visualization, and motivational tools to help you stay consistent with your core routine.

**Highlights:** Fast crunch counting with responsive controls, Goals and progress tracking, Streaks, records, and achievements, Detailed stats and history, Challenges and social accountability, Widgets and shortcuts for quick access, iCloud sync support

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Theme Pack | $1.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Premium Themes | $4.99 | one-time |
| Unlock Everything | $6.99 | one-time |


## Frequently asked questions

### Is Kata Mastery free?

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

### Is OneCrunches free?

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

### Which has better reviews, Kata Mastery or OneCrunches?

Kata Mastery and OneCrunches are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do Kata Mastery or OneCrunches have ads?

Neither Kata Mastery nor OneCrunches shows ads.

### Which is updated more often, Kata Mastery or OneCrunches?

Kata Mastery ships an update every 23 months, and OneCrunches weekly. Most recently, Kata Mastery was updated on October 2, 2026 and OneCrunches on October 3, 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.*