NBack 3D vs N
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NBack 3D
This app challenges your memory by requiring you to count 3D shapes of specific colors. As the 'N' value increases, the difficulty escalates, testing your ability to recall past stimuli in a sequence.
- N-Back memory challenge
- 3D shape and color recognition
- Increasing difficulty levels
- Sequence memorization
- Cognitive skill enhancement
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The task is only to count the 3D shapes of the specified shape and color, but as the N of the N ‘Back increases, it becomes more difficult. *N’Back : The current answer matches the one from N steps earlier in the sequence. *1’Back 1 task1: count & memorize 2 task2: count & memorize 3 answer for task1 4 task3: count & memorize 5 answer for task2 6 task4: count & memorize : *2’Back 1 task1: count & memorize 2 task2: count & memorize 3 task3: count & memorize 4 answer for task1 5 task4: count & memorize 6 answer for task2 7 task5: count & memorize :
N
This app uses the scientifically validated Dual N-Back task to enhance working memory and focus. It offers a structured challenge, detailed statistics, and adaptive difficulty to improve cognitive abilities. Designed for students, professionals, or anyone seeking mental fitness.
- Dual N-Back task for cognitive enhancement
- 20-Day structured habit-building challenge
- Detailed progress tracking with charts and heatmaps
- Practice mode with customizable N-levels
- Adaptive difficulty that adjusts to user performance
- Distraction-free, dark-mode design
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Train your working memory with N-Back. N-Back is a focused brain-training game built around the Dual N-Back task: remember where the square appeared and what letter you heard, then respond when either one matches N steps back. It is simple to learn, hard to master, and perfect for short daily focus sessions. WHY N-BACK? Dual N-Back is widely used in cognitive training and working-memory research because it asks your brain to hold, update, and compare information in real time. N-Back turns that task into a clean daily practice you can actually stick with. FEATURES: 20-Day Challenge Build a consistent habit with a structured daily program. Track your streak and finish bite-sized sessions without overthinking what to do next. Dual Visual + Audio Training Follow both the grid position and spoken letters at the same time. Train attention, memory, and response control in one compact exercise. Adaptive Difficulty The challenge grows with you, keeping sessions demanding without making them feel random or impossible. Practice Mode Train without affecting your streak. Adjust the N-level and experiment at your own pace. Progress Stats See your sessions, scores, streaks, and level changes over time so improvement feels visible. Clean, Focused Design A minimal interface keeps the exercise front and center. No clutter, no gimmicks. HOW TO PLAY: Position Match: tap when the square matches the position from N steps back. Sound Match: tap when the spoken letter matches the one from N steps back. Dual Task: track both at once and push your working memory. Start with a short session today and build the habit. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: NBack 3D at 100% against N's 50%. NBack 3D also leads on rating (5.0 vs 4.0). N's advantage is ads (none vs shown) and update cadence (every 6 days vs every 10 months). On price, ratings volume, in-app purchases 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
Both are free to download. NBack 3D sells 1 one-off in-app purchase and N sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
NBack 3D holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 100% of NBack 3D's written reviews are positive against 50% of N's.
NBack 3D ships an update every 10 months, N every 6 days. The most recent releases landed on October 25, 2026 and October 18, 2026 respectively.
| Parameter | NBack 3D | N |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.0 (2 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 10 months | Every 6 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 5 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Yasuyoshi Ota | AHMET EMRE DEDELER |
Customer experience
NBack 3D
N
In-app purchases
NBack 3D
- Extend to 20'Back & Remove Ads$2.99
N
- N-Back Pro Weekly7 Days trial$1.997 Days
- N-Back Pro Monthly7 Days trial$2.991 Month
- N-Back Pro Yearly7 Days trial$24.991 Year
