# Kata Calc vs Simple Karate Scoreboard

The clearest difference is in-app purchases: Kata Calc at none against Simple Karate Scoreboard's 3. Kata Calc also leads on ads (none vs shown) and iOS requirement (9.3 vs 15.6). Simple Karate Scoreboard's advantage is update cadence (every 2 months vs every 7 months). On price and device support there is nothing between them.

Both are free to download. Simple Karate Scoreboard sells 3 in-app purchases, starting at $0.99 per month. Kata Calc asks for nothing beyond the download.

Kata Calc ships an update every 7 months, Simple Karate Scoreboard every 2 months. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Kata Calc | Simple Karate Scoreboard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/simple-karate-scoreboard/id1576643941/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 41 MB |
| Requires iOS | **9.3** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [okashige0319](https://appshunter.io/developer/478571276) | [NAOYA ONO](https://appshunter.io/developer/1530328146) |

## What reviewers say

### Kata Calc

[App page](https://appshunter.io/ios/app/kata-calc/id478571273)

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Karate Scoreboard

[App page](https://appshunter.io/ios/app/simple-karate-scoreboard/id1576643941)

This app provides a simple and intuitive scoreboard for karate matches. It features customizable themes, player name input, point and penalty tracking, a timer, and a "Senshu" indicator for the first point. Easily reset scores and fouls from the settings menu.

**Highlights:** Customizable themes (Theme 1 & Theme 2), Player name input, Add/subtract points, Penalty tracking (C1/C2), Adjustable timer (2 or 3 minutes), Senshu indicator, Reset scores and fouls

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $0.99 | per month |
| Support Developer | $0.99 | one-time |
| Remove ads | $24.99 | one-time |


## Frequently asked questions

### Is Kata Calc free?

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

### Is Simple Karate Scoreboard free?

Simple Karate Scoreboard is free to download, with in-app purchases available.

### Do Kata Calc or Simple Karate Scoreboard have ads?

Simple Karate Scoreboard shows ads; Kata Calc does not.

### Which is updated more often, Kata Calc or Simple Karate Scoreboard?

Kata Calc ships an update every 7 months, and Simple Karate Scoreboard every 2 months. Most recently, Kata Calc was updated on November 4, 2026 and Simple Karate Scoreboard on November 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.*