BASLN
Cognitive readiness. Measured, not estimated. 5 min a day.
BASLN launched on April 21, 2026 with 2 votes, #4,561 of 21,248 launches that month.
What it does
Six research-validated cognitive tests. Five minutes. A daily score against your personal baseline. No wearable required.
Your Whoop can tell you your nervous system is stressed. It can't tell you your reaction time is 80ms slower than yesterday. BASLN measures your brain directly with six research-validated cognitive tests. Five minutes. Every morning. HRV, sleep stages, and respiratory rate tell you about your autonomic state. They don't tell you how fast you react, how much you remember, or how well you focus. Those require cognitive tests. Each test is a compressed version of an instrument used in peer-reviewed cognitive research. Together they cover the core dimensions of operational cognitive performance. Tap the moment a counter appears. No learning effect. The gold-standard measure of fatigue in sleep…from basln.app
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