Break Through Plateaus with Precision Training

Sign up instantly for full access to ALL features for 14 days – no credit card required. Explore d′-prime analytics, 100 micro-levels per N, session replay, journaling, WMC assessments, and more. If you love it, choose a plan before the trial ends to continue seamlessly.

If you don't subscribe, access will pause, but your profile and progress data are saved. You can subscribe anytime (Monthly or Yearly) via your account settings to reactivate full access and pick up exactly where you left off.

d′-prime (d') is a standard metric from Signal Detection Theory used in cognitive research. It measures your *sensitivity* – your actual ability to distinguish correct N-Back matches (hits) from incorrect ones (false alarms). Simple accuracy (%) can be misleading because high scores might just mean you're clicking the buttons a lot (high hits, but also high false alarms). d′ gives a truer measure of your working memory performance improvement, independent of guessing strategy.

Standard N-Back apps often jump difficulty too quickly (e.g., straight from N=3 to N=4), causing frustration. Our **100 micro-steps (N.00 to N.99)** within each N-level allow for extremely fine-grained adjustments based on your d' performance. The system gradually tweaks parameters like speed (ISI), stimulus duration, match density, lure frequency, and audio similarity. This keeps you constantly challenged in your optimal learning zone, leading to smoother progress and preventing you from getting stuck on harsh difficulty spikes.

It's a standardized test (a Complex Span Task) designed to measure your core Working Memory Capacity (WMC), separate from your skill at the N-Back task itself. You'll perform a processing task (counting specific shapes) while simultaneously trying to remember the counts in order. Taking this monthly allows you to track objective improvements in your underlying WMC, complementing your N-Back progress.

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