Comparison

N'Back vs Dual N

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

Head to head
About

N'Back

Enhance sensory and working memory with this brain training application. It offers various modes to test your ability to recall sequences of numbers, progressing through different 'N' levels.

Highlights
  • Sensory memory improvement
  • Working memory enhancement
  • N'Back exercises
  • Flash Mode
  • Slow Mode
  • Step Mode
Features
Read full description

Improve Sensory Memory & Working Memory using N'Back. ◆Flash Mode / Slow Mode / Step Mode Tap the number key matches the one from N steps earlier in the sequence. In 1'Back 1 task1: count & memorize 2 task2: count & memorize 3 __keyboard__: answer for task1 4 task3: count & memorize 5 __keyboard__: answer for task2 6 task4: count & memorize : In 2'Back 1 task1: count & memorize 2 task2: count & memorize 3 task3: count & memorize 4 __keyboard__: answer for task1 5 task4: count & memorize 6 __keyboard__: answer for task2 7 task5: count & memorize :

About

Dual N

This scientifically proven brain training app enhances working memory, concentration, and cognitive abilities. It helps improve IQ, memory, and thinking speed through engaging gameplay that challenges your brain. Consistent practice leads to noticeable improvements in focus and mental agility.

Highlights
  • Strengthens working memory
  • Improves concentration
  • Enhances cognitive abilities
  • Difficulty adjustment (N-2 to N-5)
  • Progress visualization with graphs
  • Statistics and calendar tracking
  • Global player rankings
Read full description

■ What is Dual N-Back Dual N-Back is a scientifically proven brain training app that strengthens your working memory, concentration, and cognitive abilities. With consistent training, it helps improve your IQ, memory, and thinking speed. --- ■ Basic Rules The rules of Dual N-Back are simple, yet your brain works harder the more you play. * Remember the sequence of positions and letters displayed on the screen. * When the current position or letter matches the one shown N steps earlier, press the corresponding button. * Each correct answer sharpens your memory and focus — like a workout for your brain. * The challenge continues until all lives are lost, testing your concentration and endurance. --- ■ Main Features * Difficulty Adjustment: Choose from N-2 to N-5 and train at your own level. * Progress Visualization: Track your training volume with graphs and see your improvement through the average correct answers per game. * Statistics and Calendar: View summarized stats such as play count, accuracy rate, and average score. Review your progress on a calendar to stay motivated. * Global Ranking: Compete with players around the world and challenge the limits of your brain. --- ■ The More You Play, the Stronger Your Brain Becomes Just a few minutes a day — on your commute or during a break — can make a real difference. Every session helps your brain grow stronger, step by step. Take one step today to evolve your mind.

Screenshots

N'Back4 screens
Dual N4 screens

Verdict

The call

The clearest difference is ads: Dual N at none against N'Back's shown. Dual N also leads on update cadence (every 10 days vs every 9 months) and rating (4.3 vs 4.0). N'Back's advantage is review sentiment (73% vs 48%). On price, in-app purchases, monetization model 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. N'Back sells 1 one-off in-app purchase and Dual N sells 2 in-app purchases, starting at $1.99 per month. 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, 4.3 against 4.0. That said, the two scores are not equally well evidenced: Dual N has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 73% of N'Back's written reviews are positive against 48% of Dual N's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

N'Back ships an update every 9 months, Dual N every 10 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
N'Back versus Dual N: the parameters behind the verdict, then further details
ParameterN'BackDual N
PriceFreeFree
Rating4.0 (3 ratings)4.3 (19 ratings) — better
Positive reviews72.7% of reviews — better48.0% of reviews
Number of ratings319 — better
Update frequencyEvery 9 monthsEvery 10 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhoneiPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size6 MB41 MB
Age rating4+4+
DeveloperYasuyoshi OtaHiromi Fujita

Customer experience

N'Back

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews11 reviews
Positive72.7%
Neutral0.0%
Negative27.3%

Dual N

All ratings19 ratings
Positive84.2%
Neutral5.3%
Negative10.5%
Written reviews25 reviews
Positive48.0%
Neutral12.0%
Negative40.0%

In-app purchases

1 purchases

N'Back

One-time1
  • Add Levels (3'Back-10'Back) and Remove Ads$2.99
2 purchases

Dual N

Subscriptions2
  • Monthly Premium Features$1.991 Month
  • Annual Premium Features$19.991 Year

Questions

Is N'Back free?
N'Back is free to download, with in-app purchases available.
Is Dual N free?
Dual N is free to download, with in-app purchases available.
Which has better reviews, N'Back or Dual N?
Dual N is rated higher. N'Back averages 4.0 out of 5 from 3 ratings, while Dual N averages 4.3 from 19 ratings.
Do N'Back or Dual N have ads?
N'Back shows ads; Dual N does not.
Which is updated more often, N'Back or Dual N?
N'Back ships an update every 9 months, and Dual N every 10 days. Most recently, N'Back was updated on October 27, 2026 and Dual N on October 24, 2026.

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