PlainShogiBoard / Plain将棋盤 vs MentalCalculation & Abacus Pro
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
PlainShogiBoard / Plain将棋盤
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Simple Shogi board app. Pieces move freely. Number of pieces can be increased or decreased. Options include font size and weight, serif font, English term, etc. SharePlay Play a shogi board with FaceTime or Messages. Use case: "Play a game with your friend", "Discuss a shogi problem with many people", etc. Start SharePlay by holding the top of your iPhone near the top of someone else's iPhone.(iOS 17 iPhone only) Multi-platform iPhone and iPad, Apple Watch, Mac, Apple TV, Apple Vision Pro. Sync between devices via iCloud. Export/Import Support for export to image format. Support for export/import to plain text format. ==== Japanese(native) ==== シンプルな将棋盤アプリです。 駒は自由に動きます。任意の駒を消したり増やしたりできます。 駒のフォントをカスタマイズしたり英語表記に変えたりして自分に合った将棋盤を作りましょう。 SharePlayに対応 複数人で1つの将棋盤を同時に操作できます。 インターネット越しに「FaceTime」アプリや「メッセージ」アプリを通じて友達と将棋盤を囲むことができます。 SharePlay機能では「2人でシンプルに対局する」だけでなく、「大人数で詰将棋を解く」などの様々なユースケースを想定しています。 iPhone同士を近付けてボタンを1回押すだけでSharePlayを始めることも出来ます。(iOS 17以降のiPhone限定) マルチプラットフォーム iPhone、iPad、Apple Watch、Mac、Apple TV、Apple Vision Proに対応。 局面はiCloudによって端末間で同期されます。 書き出し/読み込み機能 盤面を画像として書き出せます。 盤面をテキストとして書き出したり読み込んだりできます。
MentalCalculation & Abacus Pro
Engage in a fun and challenging mental calculation and abacus game. Practice with diverse questions and learn the abacus with an easy tutorial. This pro version offers an enhanced experience without frequent forced ads.
- Mental calculation practice
- Abacus learning tutorial
- Variety of practice questions
- Pro version benefits
- No forced ads
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[ Pro version bonus ] * No forced ads that appear every 5 minutes of play time * Significant increase in recharge amount when watching coin recharge advertisements [ Mental Calculation & Abacus ] Play the best Mental Calculation and Abacus game! * Practice with a variety of questions * Easy tutorial for learning Abacus
Screenshots
Verdict
The clearest difference is price: PlainShogiBoard / Plain将棋盤 at Free against MentalCalculation & Abacus Pro's $0.99. PlainShogiBoard / Plain将棋盤 also leads on ads (none vs shown) and device support (6 vs 3). MentalCalculation & Abacus Pro's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 2 months).
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
PlainShogiBoard / Plain将棋盤 is free to download; MentalCalculation & Abacus Pro costs $0.99 up front. PlainShogiBoard / Plain将棋盤 sells 1 one-off in-app purchase. MentalCalculation & Abacus Pro asks for nothing beyond the download.
PlainShogiBoard / Plain将棋盤 ships an update every 2 months, MentalCalculation & Abacus Pro monthly. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.
| Parameter | PlainShogiBoard / Plain将棋盤 | MentalCalculation & Abacus Pro |
|---|---|---|
| Price | Free — better | $0.99 |
| Positive reviews | — | 0.0% of reviews |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | — | Paid |
| Devices | iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 27.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 144 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryo Yamashita | Park Jisang |
In-app purchases
PlainShogiBoard / Plain将棋盤
- Hide AD$1.99
MentalCalculation & Abacus Pro
No in-app purchases
Questions
Is PlainShogiBoard / Plain将棋盤 free?
Is MentalCalculation & Abacus Pro free?
Do PlainShogiBoard / Plain将棋盤 or MentalCalculation & Abacus Pro have ads?
Which is updated more often, PlainShogiBoard / Plain将棋盤 or MentalCalculation & Abacus Pro?
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