N'Back
N'Back Summary
N'Back is a ad-supported Android app in Casual by i-appli Ota Yasuyoshi. Released in Feb 2021 (5 years ago). It has about 772+ installs Based on AppGoblin estimates, it reaches roughly 11 monthly active users and generates around $<10K monthly revenue (0% IAP / 100% ads). Store metadata: updated Jul 16, 2025.
Recent activity: 7.00 installs this week (38 over 4 weeks) showing strong growth View trends →
Store info: Last updated on Google Play on Jul 16, 2025 .
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App Description
Improve Sensory Memory & Working Memory using N'Back. ◆1'Back ◆Flash / Step
The nback task is a method of measuring temporary memory ability (working memory ability) introduced by Kirchner in 1958.
The nBack task was found to have the effect of not only measurement but also improving temporary memory ability itself, and is now being treated as one of brain training.
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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
:
Please see the following site for how to use this app.
https://android.brain-workout.org/nback/