Comparison

BRAIN 99 vs 99鬼退治~99×99の問題に答えて鬼を倒そう

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

Head to head
About

BRAIN 99

Engage in real-time brain battles with friends and family. This game offers over 20 challenges to activate different parts of your brain, improving memory, observation, and calculation skills. Compete for rewards and titles to boost your IQ.

Highlights
  • Real-time multiplayer brain battles
  • Over 20 brain-activating challenges
  • Improves memory, observation, analysis, focus, calculation
  • Competitive rankings and rewards
  • Intuitive gameplay for all ages
  • Unlock new challenges and titles
Read full description

Are you ready to Prove your Smarts with your Friends? Welcome to the ultimate brain survival game, BRAIN 99! [Game Features] Enjoy a Brain Battle with your Family & Friends! - Intuitive and Fun for kids to adults! Everyone can just pick up and play. - Play with your Family and Friends in real-time through Friends Mode. Boost Your Brainpower Everyday! - Have fun everyday and discover yourself getting little smarter each time. - No need to Learn separately. Just play to train! Over 20 Brain-Activating Challenges to help you stay Sharp! - Activate various parts of your brain with easy-to-learn challenges. - Develop all areas like: Memory, Observation, Analysis, Focus, and Calculation. Aim for a Higher Rank sand Earn every more Rewards! - Compete for special rewards based on weekly and monthly rankings. - Earn unique titles and unlock new challenges, missions. Get Smarter! Level up your IQ now! Show your friends how smart you are with BRAIN 99! [Terms of Service] http://wwwdata.xogames.co.kr/policies.html [Privacy Policy] http://wwwdata.xogames.co.kr/privacy.html [Bug Report] - E-Mail: support@xogames.co.kr - Discord:https://bit.ly/XOdiscord

About

99鬼退治~99×99の問題に答えて鬼を倒そう

Features
Read full description

本アプリは、99×99までの掛け算問題に答えながら敵を倒して進む、計算力強化とアクション要素を組み合わせた脳トレゲームです。 テンポよく出題される計算問題に正解することで攻撃が発動し、ステージを攻略できます。 特徴 ・99×99までの掛け算で計算力を鍛えられる ・ステージごとに異なる敵や難易度 ・短時間で遊べるテンポ良い構成 ・繰り返しプレイしやすく、学習にも最適 計算力を鍛えたい方、脳トレを楽しみたい方、サクッと遊べるゲームをお探しの方に最適です。

Screenshots

BRAIN 994 screens
99鬼退治~99×99の問題に答えて鬼を倒そう3 screens

Verdict

The call

The clearest difference is update cadence: 99鬼退治~99×99の問題に答えて鬼を倒そう at daily against BRAIN 99's every 8 days. BRAIN 99's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 18.2). On price, ads and in-app purchases 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. BRAIN 99 sells 12 one-off in-app purchases and 99鬼退治~99×99の問題に答えて鬼を倒そう sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

BRAIN 99 ships an update every 8 days, 99鬼退治~99×99の問題に答えて鬼を倒そう daily. The most recent releases landed on October 21, 2026 and October 16, 2026 respectively.

Scorecard3 real differences · 7 level
BRAIN 99 versus 99鬼退治~99×99の問題に答えて鬼を倒そう: the parameters behind the verdict, then further details
ParameterBRAIN 9999鬼退治~99×99の問題に答えて鬼を倒そう
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 8 daysDaily — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better18.2
Further details — not scored
Size311 MB29 MB
Age rating4+4+
DeveloperXOGAMES IncYusaku Fujita

In-app purchases

12 purchases

BRAIN 99

One-time12
  • Coins x1100$1.99
  • Starter Pack Lv.1$1.99
  • Coins x2500$3.99
Show 9 more
  • Starter Pack Lv.2$3.99
  • No Ads$5.99
  • Starter Pack Lv.3$5.99
  • Starter Pack$5.99
  • Coins x7500$7.99
  • Starter Pack All$7.99
  • Coins x14900$14.99
  • Coins x27000$17.99
  • Coins x50000$22.99
3 purchases

99鬼退治~99×99の問題に答えて鬼を倒そう

Subscriptions2
  • プレミアムプラン 月額$2.991 Month
  • プレミアムプラン 年額$24.991 Year
One-time1
  • リトライ機能$0.49

Questions

Is BRAIN 99 free?
BRAIN 99 is free to download, with in-app purchases available.
Is 99鬼退治~99×99の問題に答えて鬼を倒そう free?
99鬼退治~99×99の問題に答えて鬼を倒そう is free to download, with in-app purchases available.
Do BRAIN 99 or 99鬼退治~99×99の問題に答えて鬼を倒そう have ads?
Both BRAIN 99 and 99鬼退治~99×99の問題に答えて鬼を倒そう show ads.
Which is updated more often, BRAIN 99 or 99鬼退治~99×99の問題に答えて鬼を倒そう?
BRAIN 99 ships an update every 8 days, and 99鬼退治~99×99の問題に答えて鬼を倒そう daily. Most recently, BRAIN 99 was updated on October 21, 2026 and 99鬼退治~99×99の問題に答えて鬼を倒そう on October 16, 2026.

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