# MJCalc vs PKDataNavi

The clearest difference is in-app purchases: MJCalc at none against PKDataNavi's 1. MJCalc also leads on iOS requirement (11.0 vs 17.0). PKDataNavi's advantage is update cadence (weekly vs every 10 months). On price, ads and device support there is nothing between them.

Both are free to download. PKDataNavi sells 1 in-app purchase, starting at $0.99 per month. MJCalc asks for nothing beyond the download.

MJCalc ships an update every 10 months, PKDataNavi weekly. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | MJCalc | PKDataNavi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pkdatanavi/id6741091447/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 10 months | **Weekly** |
| Monetization | **Ad-supported** | Freemium |
| Size | 26 MB | 53 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [Shuji Nagaoka](https://appshunter.io/developer/362303447) | [Hiroki Monden](https://appshunter.io/developer/1644090347) |

## What reviewers say

### MJCalc

[App page](https://appshunter.io/ios/app/mjcalc/id1188639571)

This app simplifies Mahjong score calculations with minimal touch input. Designed for efficiency, it aims to make scoring quick and easy for players. Feedback and requests can be submitted via the support page.

**Highlights:** Simplified score calculation, Minimal touch operations, Efficient gameplay aid, Support page for feedback

**Features:** macOS Compatibility

**In-app purchases:** none


### PKDataNavi

[App page](https://appshunter.io/ios/app/pkdatanavi/id6741091447)

Analyze Pokémon TCG Pocket matches with an Elo-based matchmaking system and real-time meta deck analysis. Track your battle records, refine strategies with detailed win rate data, and compete in seasonal rankings. A premium plan offers cross-device sync and advanced meta breakdowns.

**Highlights:** Elo-rated matchmaking, Real-time meta deck analysis, Battle record tracking, Seasonal rankings, Deck win rate visualization, Customizable analysis filters

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $0.99 | per month |


## Frequently asked questions

### Is MJCalc free?

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

### Is PKDataNavi free?

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

### Do MJCalc or PKDataNavi have ads?

Both MJCalc and PKDataNavi show ads.

### Which is updated more often, MJCalc or PKDataNavi?

MJCalc ships an update every 10 months, and PKDataNavi weekly. Most recently, MJCalc was updated on October 10, 2026 and PKDataNavi on October 25, 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.*