Terms of Use

No custom licence is registered for Dual N-Back in App Store Connect. Use of the app is governed by Apple’s standard Licensed Application End User License Agreement.

Purchases and subscriptions

Dual N-Back Pro is sold through the App Store. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, in Settings › your name › Subscriptions.

Refunds are decided by Apple at reportaproblem.apple.com.

Nature of the service

Dual N-Back is a working-memory training app. Scores describe performance on the exercises; the app does not measure IQ and does not promise an increase in intelligence.