Comparison

Dual N vs Kakooma

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

Head to head
About

Dual N

This app is a brain game designed to improve working memory and cognitive skills through a challenging memory-training exercise. It offers customizable difficulty, goal setting, and global leaderboards to track progress. An ad-free experience is available via a subscription.

Highlights
  • Working memory training
  • Customizable difficulty (N-value, interval, session length)
  • Goal setting and reminders
  • Global leaderboards
  • Multilingual support
  • Ad-free Pro version
Features
Read full description

Dual NBack – Brain Training to Improve Memory Dual NBack is a fun and challenging brain game designed to strengthen your working memory. Set goals, get reminders, and climb the global leaderboards as you sharpen your mind! What Is Dual NBack? Dual NBack is a memory-training game that presents audio (letters) and visual (positions) sequences simultaneously. Research suggests that consistent play may enhance your working memory—the ability to hold and process information briefly—and also boost short-term recall. How to Play The game starts at Level N=2, where you need to remember the position (square) and the sound (letter) from two turns back. If the current position or sound matches what was shown two turns ago, tap the corresponding button. Strong performance automatically raises your level, but you can manually adjust the difficulty whenever you like. Key Features Customizable Settings Tailor your training: tweak the N-value (number of turns to recall), the interval between sounds/blocks, and session length as you see fit. Reminders & Goals Set daily or weekly targets and enable notifications to help you practice consistently. Global Leaderboards Compare your scores with players worldwide and see how you rank as you improve. Share Function Post your results on social media or messaging apps to challenge your friends and family. Multilingual Support Currently offered in English and Japanese, with more languages on the way. Why Train Your Working Memory? Working memory stores information for a few seconds to minutes, enabling you to make decisions, perform calculations, or tackle other cognitive tasks. Playing Dual NBack regularly can help strengthen this mental capacity, potentially improving focus, concentration, and overall brain agility. Ad-Free Experience with Dual NBack Pro Enjoy a 3-day free trial of Dual NBack Pro to train with no ads or interruptions. If you choose to purchase Dual NBack Pro, the payment is charged to your iTunes account. Renewal fees are charged within 24 hours before the current subscription period ends. You can cancel your subscription anytime: Go to Settings → tap your name → Subscriptions → locate and cancel the subscription you want to end. If you don’t cancel before the trial ends, the paid subscription automatically starts. Privacy Policy: https://goukakuappli.co.jp/privacy End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Summary Strengthen Your Mind: Give your working memory a proven workout. Adapt the Difficulty: Start at N=2 or set your preferred challenge level. Stay Motivated: Leverage reminders, goals, and leaderboards to keep pushing your limits. Go Pro for No Ads: Take advantage of a 3-day free trial and upgrade to an ad-free training experience. Download Dual NBack now and take your cognitive performance to a new level!

About

Kakooma

Test your math skills in this puzzle game by finding number pairs that add up to or multiply to a target sum. Progress through four difficulty levels, race against the clock, and use hints to overcome challenges. Track your best scores to monitor improvement.

Highlights
  • Number pair puzzles
  • Addition and multiplication challenges
  • Four difficulty levels
  • Timed gameplay
  • Hint system
  • Score tracking
Features
Read full description

Where Fun Meets Math Test your skills in this exciting puzzle game! Find pairs of numbers that either add up to a sum or multiply to a product shown on the board. With 4 challenging levels—Easy, Medium, Hard, and Expert—you'll unlock each level by mastering the one before it. The difficulty increases as you progress, keeping the challenge fresh! Race against the clock! Correct answers give you extra time, while mistakes can be corrected with coins or by starting fresh. Need help? Use hints to get through tough puzzles and track your best score to see how you're improving!

Screenshots

Dual N4 screens
Kakooma4 screens

Verdict

The call

The clearest difference is ads: Kakooma at none against Dual N's shown. Kakooma also leads on review sentiment (61% vs 51%). Dual N's advantage is rating (4.6 vs 4.2). On price, ratings volume, update cadence 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. Dual N sells 2 in-app purchases, starting at $0.99 per month and Kakooma sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Dual N holds the better App Store score, 4.6 against 4.2. Both are backed by a comparable volume of ratings — 379 and 150 respectively. Written reviews complicate that: 51% of Dual N's written reviews are positive against 61% of Kakooma's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Dual N ships an update fortnightly, Kakooma every 3 weeks. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

Scorecard3 real differences · 7 level
Dual N versus Kakooma: the parameters behind the verdict, then further details
ParameterDual NKakooma
PriceFreeFree
Rating4.6 (379 ratings) — better4.2 (150 ratings)
Positive reviews50.9% of reviews61.3% of reviews — better
Number of ratings379 — better150
Update frequencyFortnightly — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size199 MB179 MB
Age rating4+17+
DeveloperGOKAKU SUPPLI, LIMITED LIABILITY CO.Tang Math Games, LLC

Customer experience

Dual N

All ratings362 ratings
Positive88.1%
Neutral5.8%
Negative6.1%
Written reviews110 reviews
Positive50.9%
Neutral20.0%
Negative29.1%

Kakooma

All ratings96 ratings
Positive77.1%
Neutral6.3%
Negative16.7%
Written reviews31 reviews
Positive61.3%
Neutral6.5%
Negative32.3%

In-app purchases

2 purchases

Dual N

Subscriptions1
  • NBack Monthly Subscription3 Days trial$0.991 Month
One-time1
  • Lifetime Pass$12.99
8 purchases

Kakooma

One-time8
  • Coins 240$0.99
  • Coins 720$2.99
  • Coins 1330$4.99
Show 5 more
  • Bundle$4.99
  • Remove Ads$5.99
  • Coins 2900$9.99
  • Coins 6300$19.99
  • Coins 17000$49.99

Questions

Is Dual N free?
Dual N is free to download, with in-app purchases available.
Is Kakooma free?
Kakooma is free to download, with in-app purchases available.
Which has better reviews, Dual N or Kakooma?
Dual N is rated higher. Dual N averages 4.6 out of 5 from 379 ratings, while Kakooma averages 4.2 from 150 ratings.
Do Dual N or Kakooma have ads?
Dual N shows ads; Kakooma does not.
Which is updated more often, Dual N or Kakooma?
Dual N ships an update fortnightly, and Kakooma every 3 weeks. Most recently, Dual N was updated on November 7, 2026 and Kakooma on November 10, 2026.

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