BASLN: Measure Your Cognitive Readiness Directly

Wearables can tell you about your heart rate or sleep stages, but they cannot measure reaction time, memory, or focus. BASLN bridges this gap by measuring your brain directly using six research-validated cognitive tests. Designed for iPhone with iOS 17 or later, the app provides an end-to-end encrypted experience stored in iCloud, with no servers, zero analytics, and no accounts.

Benefits

BASLN offers several key advantages over traditional health trackers. It measures actual cognitive performance instead of inferring it from indirect data. The app covers six core dimensions of operational cognitive performance including reaction time, working memory, processing speed, executive function, cognitive throughput, and flexibility. Each test is a compressed version of an instrument used in peer-reviewed cognitive research. The app uses a unique scoring system where every session scores you 0 to 100 against your own norm. There are no population percentiles so the metric is simply you versus you. If you receive a low score the app surfaces evidence-ranked recovery protocols with time-to-effect estimates and citations. You can retest later in the day to see whether the intervention actually moved your numbers or if you were placebo-ing yourself. The app gets more useful the longer you keep logging. Every session sharpens your baseline and every week adds signal. After one year you possess a longitudinal record of your own cognition that no wearable doctor or device has ever captured.

Use Cases

Users can use BASLN to track their daily cognitive readiness. They should take the battery once a morning for five sessions to establish a personal cognitive signature. This helps them understand their baseline across the six dimensions. Subsequent sessions allow them to score their performance against their own norm. This is useful for people who want to test the effectiveness of their recovery stack. They can use the app to see if caffeine timing bright light exposure high-intensity interval training or naps actually improve their cognitive scores. The app is ideal for individuals interested in sleep optimization stress management or performance enhancement. It is also useful for researchers or professionals who need to track cognitive throughput under time pressure. The app works best on an iPhone with iOS 17 or later because it stores data in iCloud without requiring a server connection.

Pricing (ONLY include if available)

BASLN is free for your first 10 sessions. Afterward the app continues to provide value through longitudinal tracking. There is no mention of a specific monthly or yearly subscription fee in the provided text.

Vibes (ONLY include if available)

The provided text does not contain specific user reviews testimonials or public reception data from external sources like Product Hunt comments or app store ratings. It only describes the intended user experience and the value proposition of the tool.

Additional Information (ONLY include if available)

BASLN has no servers. It collects nothing runs zero analytics and requires no accounts. Your cognitive history remains in your private iCloud end-to-end encrypted. The app utilizes the same experimental loop used in operational fatigue research but compressed for daily use. The six tests are based on instruments used in peer-reviewed cognitive research including work by Jonides et al 1993 NASA research and Reitan 1958. The app is designed for iPhone with iOS 17 or later. A missed week creates a hole in the record that cannot be refilled. The Starting Baseline begins to sharpen after five sessions and the Adaptive Baseline is fully loaded with 21 days of data in a rolling window. Correlations become meaningful after 90 days of logging. Seasonal patterns emerge after one year of use. A longitudinal record of your own cognition is built over three years or more.