Best decision journal for solo founders

The decision journal space is surprisingly sparse when you filter for solo founder-specific tools — there are roughly 30-50 general journaling and decision-tracking apps out there, but almost none are optimized for the founder's actual workflow: rapid decisions under uncertainty, capital allocation choices, and hiring calls. Most existing tools (Roam Research, Notion, Obsidian) require heavy customization and don't scaffold the decision-making process itself. The real pain point isn't capturing decisions; it's the friction of *consistently* logging them alongside outcome data, reflections on assumptions, and pattern recognition across decisions over months. The gap exists because most productivity tools chase the broad market, not the specific neuroses of solopreneurs who know decision quality directly impacts their bottom line. A new entrant should focus on three things: (1) ultra-low friction entry — one-click logging while on a call or Slack, (2) built-in reflection prompts that match founder psychology (confidence level, capital at risk, timeline to feedback), and (3) a dashboard that surfaces your decision patterns and accuracy trends without requiring manual review. The winner here won't be the slickest UI; it'll be the tool that founders actually use because it fits their existing cadence.