Clarveo is a trading coach tool that analyzes your trade history to identify expensive repetitive patterns, assigns them a name and cost, and provides one testable rule to improve. The service costs €39/month after a free trial and focuses on behavioral analysis rather than entry signals or win-rate promises.
A programmer discovers that fsync() doesn't guarantee data durability the way commonly assumed, as multiple storage layers between application and disk have different definitions of "done". The article explains how write() only puts data in the page cache, not on disk, and how journaling filesystems add complexity to data persistence guarantees.
Lutino is a micro-journaling app that lets users log moods in 30 seconds and optionally connect health data from Apple HealthKit or Google Health Connect to correlate sleep, steps, workouts, and location with emotional states. The app processes everything on-device, generates personalized mood charts and daily suggestions based on detected patterns, and requires no cloud uploads of personal data.