Comparison

Dual N vs Echo

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

Echo

Features
Read full description

You just spent an hour scrolling and remember none of it. That's not your fault. Every other app is built to fragment your attention and hand it back in small, restless pieces. Echo does the opposite. A number appears. A few seconds later, another. Add the new one to the number you saw a few steps back — and type it before it slips away. No feed. No autoplay. No bottomless content. Just one number at a time, and the quiet pressure of holding something in your head. It's deceptively hard, and that's the point. The more it pulls on your short-term memory, the more it asks for the one thing the feed never does: your full attention. — Three difficulties: look back 1, 2, or 3 steps — Path mode: levels that ramp from gentle to merciless — Hands-free Voice mode: it reads each number and listens for your answer, in English or Mandarin — eyes off, screen down — A signature echo tone, synthesized live, on a pitch-black canvas — Streak and best score — no leaderboard to perform for — Fully offline. No account. No ads in your face. Echo Pro (one-time, optional): every stage's 2-back and 3-back levels, plus unlimited Voice mode. Buy once. No subscription. Put the feed down for ninety seconds. See how long your streak lasts.

Screenshots

Dual N4 screens
Echo4 screens

Verdict

The call

The clearest difference is ads: Echo at none against Dual N's shown. Dual N's advantage is device support (3 vs 1). On price, in-app purchases and iOS requirement 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 Echo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences · 8 level
Dual N versus Echo: the parameters behind the verdict, then further details
ParameterDual NEcho
PriceFreeFree
Rating4.6 (362 ratings) — better—
Positive reviews50.9% of reviews—
Number of ratings362 — better—
Update frequencyFortnightly—
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size199 MB10 MB
Age rating4+4+
DeveloperGOKAKU SUPPLI, LIMITED LIABILITY CO.AprilNEA LLC

In-app purchases

2 purchases

Dual N

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

Echo

One-time1
  • Echo Pro$4.99

Questions

Is Dual N free?
Dual N is free to download, with in-app purchases available.
Is Echo free?
Echo is free to download, with in-app purchases available.
Do Dual N or Echo have ads?
Dual N shows ads; Echo does not.

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