Comparison

Solitaire ZERO vs こいこい真剣勝負！

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head

classic cards game

About

Solitaire ZERO

Experience a classic card game with a focus on speed and global competition. This app offers an intuitive one-handed operation for seamless gameplay. Challenge yourself and players worldwide to achieve the best clear times.

Highlights

Classic solitaire gameplay
Global time trial leaderboards
One-hand easy operation
Compete with worldwide users

Features

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▽ ultra-classic cards game Solitaire! ▽ the time able to compete with the whole world of users! ▽ one hand easy operation! 【Features of the app】 -Time Trial You can compete the whole world of players and clear time! - With one hand easy operation One hand can operate all of the operations of the app!

About

こいこい真剣勝負！

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完全無料！ミニゲーム登場！静かな駆け引き、度胸で勝利！ホームメイト・リサーチの公式ミニゲームが誕生しました！［ゲームの特徴］ --「こいこい」とは？-- 日本で古来より遊ばれている花札を使った伝統的なカードゲーム。その中でも代表的な遊び方が、「こいこい」です。相手と交互に札を取って、役を作っていきます。相手よりも高得点の役を作って勝利しましょう。「こいこい」のルールがわからなくても安心取るべき札がわかるガイド機能と、役一覧の解説で遊んでいるうちに、「こいこい」のルールが自然に身につきます。あなたも日本の伝統的カードゲーム花札の「こいこい」に挑戦してみませんか？［サポートサイト］観光名所/レジャー施設検索「旅探」（植物園） http://www.homemate-research-plant.com/

Screenshots

Solitaire ZERO3 screens

こいこい真剣勝負！3 screens

Verdict

The call

The clearest difference is update cadence: こいこい真剣勝負！ at every 4 months against Solitaire ZERO's every 14 months. Solitaire ZERO's advantage is iOS requirement (7.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Solitaire ZERO ships an update every 14 months, こいこい真剣勝負！ every 4 months. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 6 level

Solitaire ZERO versus こいこい真剣勝負！: the parameters behind the verdict, then further details
Parameter	Solitaire ZERO	こいこい真剣勝負！
Price	Free	Free
Positive reviews	80.0% of reviews	—
Update frequency	Every 14 months	Every 4 months — better
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	7.0 — better	13.0
Further details — not scored
Size	28 MB	111 MB
Age rating	4+	4+
Developer	RELEASE BASE, K.K.	TOKEN CORPORATION

In-app purchases

None

Solitaire ZERO

No in-app purchases

None

こいこい真剣勝負！

No in-app purchases

Questions

Is Solitaire ZERO free?

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

Is こいこい真剣勝負！ free?

こいこい真剣勝負！ is free to download, with no in-app purchases.

Do Solitaire ZERO or こいこい真剣勝負！ have ads?

Neither Solitaire ZERO nor こいこい真剣勝負！ shows ads.

Which is updated more often, Solitaire ZERO or こいこい真剣勝負！?

Solitaire ZERO ships an update every 14 months, and こいこい真剣勝負！ every 4 months. Most recently, Solitaire ZERO was updated on October 14, 2026 and こいこい真剣勝負！ on October 11, 2026.