N·Back
A daily practice
for the mind.
A quiet, focused take on dual n-back — the most studied protocol for working memory. No streak shaming. No coins. Ten minutes is enough.
The practice
Hold two things in mind.
Then a third.
Dual n-back asks you to track two channels at once — position and sound, or position and color — and remember what happened n trials ago. With consistent practice, the mind learns to hold more in attention, switch between channels with less friction, and resist distraction with greater ease.
It is, by design, hard. It is also short. Ten minutes is enough.
Three modalities
One protocol, three intensities.
Dual Audio
Position + sound
The classic. A square moves around the grid; a letter is spoken. Mark a match when the position or sound matches n trials ago.
Dual Silent
Position + color
For when you can't put on headphones. Same protocol; color replaces sound. Train anywhere, in any environment.
Triple
Position + sound + color
Three channels at once, for when dual feels comfortable. The protocol that researchers reach for when they want the upper bound.
A quiet record
Stats that show the shape of your practice.
What’s inside
Everything you need.
Nothing you don’t.
Unlimited daily sessions
Train as much or as little as you want. The protocol meets you where you are.
Optional voice coach
Several personas — warm, neutral, stoic, monastic — or train in silence.
A stats archive that lasts
Accuracy, n-level progression, a calendar heatmap. Yours, on your device.
Adaptive difficulty
N levels rise as you improve and ease back when you stumble. No babysitting required.
No tracking, no account
No analytics. No login. Works offline. Your training data never leaves your device.
Designed for the iPhone
Native SwiftUI, full VoiceOver, Dynamic Type, Reduce Motion respected throughout.
Pricing
Seven days, free.
Then choose what fits. Or don’t. The trial unlocks every feature.
Monthly
Cancel anytime.
Annual
Best value — about $1.67 / month.
Lifetime
Pay once, train forever.
Subscriptions auto-renew unless canceled at least 24 hours before the period ends. Manage in your Apple ID settings. See Terms of Use and Privacy Policy.
Common questions
A few things people ask.
Does dual n-back actually work?+
The research is mixed. Some studies show transfer effects to working memory and fluid intelligence; others don't. What is consistent: you get measurably better at dual n-back. Whether that transfer is meaningful to you is a personal question, not a scientific one. The honest answer: try it and see.
How long until I notice something?+
Most people see their n-level rise within the first week. Subjective changes — feeling sharper, less scattered — take longer and are harder to attribute. Consistency matters more than intensity. Ten minutes a day for a month is a good baseline.
Is my data sent anywhere?+
No. There's no analytics, no account, no network calls except the StoreKit transaction handled by iOS. Your sessions, settings, and progress live on your device.
What happens after the seven-day trial?+
The trial unlocks every feature for seven days. After it ends, training requires a subscription or the lifetime purchase. You can also keep using the app in a trial-only mode for a few sessions to evaluate longer if needed.
Can I use it without sound?+
Yes. Dual Silent mode replaces audio with color, and the voice coach can be turned off entirely. It works perfectly in libraries, on planes, or in quiet spaces.
Does it work on iPad?+
It's currently iPhone-only. iPad support is planned.
Begin
Show up tomorrow.
And the day after.
Ten minutes. Three modalities. A quiet record of how it’s going. That’s the whole app.
N·Back makes no medical claims and is not a treatment for any condition.