Reactive logging, or longitudinal check-ins?
Mothers wanted real-time help at 2 AM. The obvious response was a reactive symptom logger. OB/GYNs pushed back: reactive data is the least useful kind. They needed longitudinal patterns to catch the early signals that distinguish normal pregnancy variation from a developing complication. I built both, with longitudinal check-ins as the spine and the AI chatbot pulling from that same context.
More upfront commitment from mothers (daily input vs. only-when-needed). Mitigated by keeping each check-in under 30 seconds.