Comparison

Sevens vs Concentration

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

Head to head
About

Sevens

A classic card game offering a smooth and addictive experience. Players can customize rules, choose from unique AI opponents, and utilize helpful functions like auto-sort and highlighting. Compete for the top rank and enjoy bonus game modes.

Highlights
  • Customizable game rules
  • Unique AI opponents with personalities
  • Helpful in-game functions (auto-sort, highlight)
  • Multiple game modes (Challenge, Custom)
  • Rankings and world leaderboards
  • Daily bonus games and chance time
  • Card and background customization
Features
Read full description

Familiar with classic games such as Solitaire Victory! From "PRO.APP" series which is totally downloaded 16 million, Here comes "Sevens" which popular as a classic game. It's stress free! That's runs smoothly. You can't stop playing anymore! There are many things which you are hooked on! Which type are you when you put down the card? Putting down the card actively or keep the cards to obstruct others? Let's aim to the max rank with your technique. * You can enjoy to choose rules as you like! You can enjoy gaming of 4 player who has unique AI co-op. - You can play with each 20 character has own strength and personality. - Limited 3 character appears in rare case. - Other, limited strongest 3 characters!? We have many settings which you can choose. - Number of pass, Strategy pass - Number of Joker, rules - A-K Link, Tunnel It's stress free that more kindly function included. - Auto sort by Suit : How about is my cards? - Highlight : Which card can I put down? - Card Confirmation : Oops! I put wrong card down. - Automatic Pass : You don't have the card which put down. - Double Speed : When it's feel slow, tap to speed up. - Filter : Prevent to your cards become too bad. * It's exciting that factor of unique are included. 2 game mode included : You can play deeply. - Challenge : Aim to the top. - Custom : Play the game to select strength. - Rank/Strength : There are 4 stage like "S","A","B","C" It' more fun that bonus game is included too! - Chance Time : The time score is doubled occurs everyday. - The time score is 5 times occurs rare. - The opponent is special character in special time. * Enjoy long time with many helpful options. - Enjoy that up your level to become high. - Judge your technique to aim the top. - Get the stamp to collect everyday as your task. - Earn total point to aim to highest in world ranking. - Check your past game record! - Depending on your feelings, you can change card and background. - Share your friends by sns, when you win! Enjoy Sevens in your relax time! * Inquiry - If you have any questions or report bug, please contact us by email from information page. We will answer individually. - And, we will make an effort of our product, so please give us your feedback on product usage. P.R.O Inc. PRO.APP Sevens - Fun Classic Card Game Copyright 2016-2025 (C) P.R.O Inc. All rights reserved.

About

Concentration

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【機能概要】 1人プレイやオンライ対戦ができるトランプの神経衰弱ゲーム(記憶力ゲーム)です。 ・SinglePlay  1人プレイのモードとなります。  ペアの選択の失敗時にマイナススコアのペナルティがあるので、スコアが0になる前に全てを揃えてください。  ある程度進むと、おじさんが複数枚のカードをスライドするので、記憶をアップデートしながらゲームを進めてください。 ・OnlinePlay  オンライン対戦での3人対戦のモードとなります。  自分の後は、2人のプレイヤーがプレイするので、戦略的にゲームを進めてください。  ペアの選択を30秒以内に行わないと別のプレイヤーに順番が移るので、制限時間には気を付けてください。 【操作説明】 ・戻るボタン(画面左上)  プレイを中断し、タイトル画面に戻ります。 ・スピーカーボタン(画面右上)  BGM、効果音のON/OFFを変更できます。 ・カード  裏面のカードをタップすると、選択されたカードが大きくなります。  選択されたカードを再度タップすると決定となり、表面に返ります。  2枚のカードが決定されたら、2枚のカードの数字が揃っているかの判定を行います。

Screenshots

Sevens4 screens
Concentration4 screens

Verdict

The call

The clearest difference is update cadence: Sevens at every 4 months against Concentration's every 8 months. 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

Sevens ships an update every 4 months, Concentration every 8 months. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

Scorecard1 real difference · 9 level
Sevens versus Concentration: the parameters behind the verdict, then further details
ParameterSevensConcentration
PriceFreeFree
Rating3.9 (34 ratings) — better
Positive reviews33.3% of reviews
Number of ratings34 — better
Update frequencyEvery 4 months — betterEvery 8 months
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported
DevicesiPhoneiPhone, iPod — better
Requires iOS16.015.6 — better
Further details — not scored
Size73 MB117 MB
Age rating4+4+
DeveloperP.R.O CorpMitsuaki Tanabe

Bugs and requests

Sevens

Reported bugs

14 issues
  • Error causing players to leave when playing with friends
  • Online matches freeze
  • Players are kicked out automatically
  • Online connection is unstable
  • Cannot play properly online
Show 9 more
  • Ads at the bottom are un-tappable
  • Frequent freezing during online matches
  • Cannot rejoin after disconnecting
  • Bugs when joining mid-game
  • Freezing after joining
  • Icons not added to selection after acquisition
  • Jokers not working
  • Connection errors in multiplayer
  • Game crashes

Requested features

7 requests
  • Make the game offline
  • Add an ad-free option
  • Add rank reset
  • Add daily missions
  • Add watch (thinking time) settings
Show 2 more
  • Allow selection of shorter thinking times (8-10 seconds)
  • Allow Joker use with rule variations

Concentration

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Sevens

No in-app purchases

None

Concentration

No in-app purchases

Questions

Is Sevens free?
Sevens is free to download, with no in-app purchases.
Is Concentration free?
Concentration is free to download, with no in-app purchases.
Do Sevens or Concentration have ads?
Both Sevens and Concentration show ads.
Which is updated more often, Sevens or Concentration?
Sevens ships an update every 4 months, and Concentration every 8 months. Most recently, Sevens was updated on September 23, 2026 and Concentration on September 10, 2026.

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