The two planning documents behind Dryline, the sober tracker I built with Superapp AI. Copy the structure, swap in your own app.
How they fit together: the PRD defines the product. The UI Development Plan turns it into a numbered screen list the AI builds one at a time. The Foundation Prompt locks the design system before any screen exists. Full workflow in the article.
The PRD
Vision
Dryline is a calm, premium sobriety companion for people who want to drink less. A personal clarity app, not a clinical tracking dashboard. Positioning line inside the app: "Drink less. Feel better. One day at a time." Wellness tone throughout, supportive, never clinical or shaming, no medical claims.
Why this niche
Sobriety and mindful-drinking apps are a proven, top-grossing category. The pattern that wins: a commitment-heavy onboarding, a personalized plan reveal, a hard paywall after emotional investment, then a daily loop that makes progress visible. Dryline follows the proven pattern with one focus: the emotional journey done beautifully.
Core features
- Commitment quiz onboarding: 8 personal questions, one per screen, progress bar on top, supportive breakpoint screens between sections
- Personalized plan reveal: an animated "Building your reset plan..." analyzing moment, then a plan summary computed from the user's own answers (first milestone, projected 90-day money saved from their weekly spend)
- Commitment ritual: a dedicated "I'm starting today" screen. The emotional peak of onboarding
- Paywall: appears right after the ritual. Yearly highlighted with a save badge, 7-day free trial, benefit list, restore link
- Home: the day counter as the hero inside a milestone progress ring, money saved and calories avoided and longest streak cards, daily motivation line, check-in button
- Daily check-in: mood emoji row, craving slider, optional note, gentle confetti on save
- Craving SOS: a 90-second breathing countdown with rotating coping lines and an "I rode it out" win logger
- Progress: milestone badge grid (24h through 1 year), weekly alcohol-free chart, money saved growth line
- Learn: short daily reads with soft illustration headers
- Profile: name, streak, reminders, start date, restart, Go Premium row
Monetization