NBack 3D vs Stroop Buddy
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 :
Stroop Buddy
This app provides an interactive way to take the classic Stroop Test, measuring cognitive flexibility and processing speed. It offers customizable tests, immediate performance feedback, and data export for further analysis. Designed for ease of use on mobile devices, it's a fun tool for cognitive skill enhancement.
- Customizable Stroop tests
- Instant performance feedback
- Data export via email
- User-friendly interface
- Tests cognitive flexibility
- Measures processing speed
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Stroop Buddy, designed for both iPad and iPhone, brings the classic Stroop Test to your fingertips. Engage in an interactive experience that tests your cognitive flexibility and processing speed. The Stroop Test, created by John Ridley Stroop, is a well-known psychological assessment that challenges your ability to quickly identify colors while reading color names. Key Features: - Customizable Tests: Modify the number of trials and difficulty levels to suit your needs. - Immediate Results: Get instant feedback on your performance, including response times and accuracy. - Data Export: Easily send your test results to your email for further analysis. - User-Friendly Design: Whether you're a seasoned tech user or a beginner, Stroop Buddy's intuitive interface makes it easy for everyone to use. Enhance your cognitive skills and have fun with Stroop Buddy - your go-to app for mastering the Stroop Test!
Screenshots
Verdict
NBack 3D and Stroop Buddy both sit at 5.0 stars, but that hides the real split: 100% of NBack 3D's written reviews are positive against 0% of Stroop Buddy's. NBack 3D also leads on price (Free vs $1.99) and update cadence (every 10 months vs every 25 months). Stroop Buddy's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating, ratings volume, 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
NBack 3D is free to download; Stroop Buddy costs $1.99 up front. NBack 3D sells 1 one-off in-app purchase. Stroop Buddy asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for NBack 3D against 5.0 for Stroop Buddy. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 100% of NBack 3D's written reviews are positive against 0% of Stroop Buddy's.
NBack 3D ships an update every 10 months, Stroop Buddy every 25 months. The most recent releases landed on September 11, 2026 and September 9, 2026 respectively.
| Parameter | NBack 3D | Stroop Buddy |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 10 months — better | Every 25 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 14.1 — better |
| Further details — not scored | ||
| Size | 5 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Yasuyoshi Ota | Byrt |
Customer experience
NBack 3D
Stroop Buddy
In-app purchases
NBack 3D
- Extend to 20'Back & Remove Ads$2.99
Stroop Buddy
No in-app purchases
