Dual N vs Color Code Guess
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- Working memory training
- Customizable difficulty (N-value, interval, session length)
- Goal setting and reminders
- Global leaderboards
- Multilingual support
- Ad-free Pro version
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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!
Color Code Guess
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his color — what's the #code? Pick the correct HEX color code from 4 choices! Simple yet surprisingly deep — the ultimate color sense challenge! ■ 3 Difficulty Levels! ・Easy: Start here! Welcome to the world of color codes ・Medium: Things get real. Can you spot the difference? ・Hard: Only the sharpest eyes survive ■ Endless Mode — Push Your Limits! One wrong answer and it's over! How long can you keep your streak going? ■ Compete on the Leaderboard! Register your score and aim for the top. Where will you rank? For designers, engineers, illustrators, and all color lovers. So, how far can you go?
Screenshots
Verdict
The clearest difference is in-app purchases: Color Code Guess at none against Dual N's 2. Color Code Guess also leads on update cadence (every 2 days vs fortnightly). On price, ads, device support 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
Both are free to download. Dual N sells 2 in-app purchases, starting at $0.99 per month. Color Code Guess asks for nothing beyond the download.
Dual N ships an update fortnightly, Color Code Guess every 2 days. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.
| Parameter | Dual N | Color Code Guess |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (375 ratings) — better | — |
| Positive reviews | 50.9% of reviews | — |
| Number of ratings | 375 — better | — |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 199 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | GOKAKU SUPPLI, LIMITED LIABILITY CO. | ryota kamimura |
In-app purchases
Dual N
- NBack Monthly Subscription3 Days trial$0.991 Month
- Lifetime Pass$12.99
Color Code Guess
No in-app purchases









