# 攻略アプリ〜逆転の書〜 for 逆転オセロニア vs PKDataNavi

The clearest difference is in-app purchases: 攻略アプリ〜逆転の書〜 for 逆転オセロニア at none against PKDataNavi's 1. 攻略アプリ〜逆転の書〜 for 逆転オセロニア also leads on ads (none vs shown). PKDataNavi's advantage is update cadence (every 3 days vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. PKDataNavi sells 1 in-app purchase, starting at $0.99 per month. 攻略アプリ〜逆転の書〜 for 逆転オセロニア asks for nothing beyond the download.

攻略アプリ〜逆転の書〜 for 逆転オセロニア ships an update every 3 months, PKDataNavi every 3 days. The most recent releases landed on June 10, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 攻略アプリ〜逆転の書〜 for 逆転オセロニア | PKDataNavi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pkdatanavi/id6741091447/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 58.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | **Free** | Freemium |
| Size | 25 MB | 53 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [SKILL-POOL Inc.](https://appshunter.io/developer/1781587540) | [Hiroki Monden](https://appshunter.io/developer/1644090347) |

## What reviewers say

### 攻略アプリ〜逆転の書〜 for 逆転オセロニア

[App page](https://appshunter.io/ios/app/for/id1149258978)

This app provides comprehensive data and tools for the popular game "Gyakuten Othello Nia". Features include character stats, a deck simulator, strategy guides, and a damage calculator to enhance gameplay.

**Highlights:** Character stats and skill information, Deck simulator for strategy planning, Othello strategy guides and practice board, Damage calculation tool, Past successful deck analysis, Icon maker for social media

**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 攻略アプリ〜逆転の書〜 for 逆転オセロニア free?

攻略アプリ〜逆転の書〜 for 逆転オセロニア is free to download, with no in-app purchases.

### Is PKDataNavi free?

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

### Do 攻略アプリ〜逆転の書〜 for 逆転オセロニア or PKDataNavi have ads?

PKDataNavi shows ads; 攻略アプリ〜逆転の書〜 for 逆転オセロニア does not.

### Which is updated more often, 攻略アプリ〜逆転の書〜 for 逆転オセロニア or PKDataNavi?

攻略アプリ〜逆転の書〜 for 逆転オセロニア ships an update every 3 months, and PKDataNavi every 3 days. Most recently, 攻略アプリ〜逆転の書〜 for 逆転オセロニア was updated on June 10, 2026 and PKDataNavi on September 23, 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.*