A daily practice. A detailed record.
A dual n-back practice app by CST3 Media, LLC for iPhone. Follow visual positions and spoken letters, build a daily practice routine, and inspect your performance over time.
Private beta
Currently testing by invitation under the provisional name Parallax: Dual N-Back. Not yet available for public purchase. The final launch name and pricing have not been announced.
Practice with intention
Choose N levels from 1ā8 and one of three cadences. Respond independently to matching positions and sounds. Warm-ups are unscored, and guided examples explain the task.
See how your level changes
Explore daily, weekly and monthly N-level averages and ranges. Use 7-, 30- and 90-day views, a rolling year or your full history. See first-reached levels, elapsed days, completed blocks and practice time.
Go beyond a single score
Inspect balanced accuracy, hits, misses, false alarms, dā², response timing, spatial heatmaps and a trial ledger. Filter comparable settings before drawing conclusions about progress.
Make room for a daily habit
Save an optional focus and energy check-in, add private notes, and track check-in and training streaks separately. Optional local reminders are under your control.
Keep control of your records
Training records stay in the app on your device. Export a complete JSON backup, raw trial CSV or a result image. No account, advertising SDK or app-operated server.
What the numbers mean
Scores describe performance on this specific practice task. They do not measure IQ, diagnose a condition, or establish a medical benefit. No improvement in intelligence or everyday functioning is promised.
Questions? Email connor@cst3media.com.