Pillly Dev Log - Day 1 | Notion

Date: March 19, 2026 Progress: Phase 1 (Planning) Complete · Phase 2 (Full Design Doc) Complete Participants: Planner / Developer AI model: Sonnet 4.6

✅ Today's Achievements

Item	Status
Phase 1 — Planning Document	✅ Done
Phase 2 — Full Design Document	✅ Done
Service Name Confirmed	✅ Pillly
Tech Stack Confirmed	✅ Done
User Flow Diagram	✅ Done
Screen List / IA (22 screens)	✅ Done
Core Feature Specification	✅ Done
Key Screen Wireframes (4 screens)	✅ Done

1. Project Overview

Basic Service Information

Item	Details
Service Name	Pillly
Purpose	A medication reminder and management app that helps chronic disease patients take their daily medications on time, without missing a dose
Primary Target	Chronic disease patients (self-managed)
Launch Platforms	iOS + Android simultaneous release
Target Markets	South Korea + English-speaking global markets
Revenue Model	Free app (user acquisition first)

Service Name Rationale

Pillly selected from candidates
Pill + repetitive suffix (-ly) → conveys the nuance of "taking it every day"
Same pronunciation in Korean and English — suitable for global launch
High brand scalability and character marketing potential

2. Phase 1 — Planning Document

Core Value

Item	Details
Problem Definition	Medication non-adherence rate among chronic patients exceeds 50%; the top reason is "forgetting"
Solution	Smart reminders + visual medication history to build consistent habits
Core Values	Simplicity / Reliability / Sustainability

User Personas

Persona A — Primary Target

Name: Kim Cheol-su (58, Male), retired, now self-employed