What is Heart Stamp?
Heart Stamp recreates the warm Korean tradition of teachers stamping student diaries with encouraging comments - powered by AI. What makes it different: - Teacher stamp system: Cultural nostalgia unique to Korean/Asian education - AI mentor: Warm, personalized feedback (not just cold analytics) - Morning surprise: Comments arrive next day like receiving a letter - Picture diary: Attach photos to capture richer memories it's having a caring teacher cheer you on every day
Problem
Users lack personalized, encouraging feedback in traditional digital diaries or journaling apps. Lack of encouraging feedback makes entries feel impersonal and reduces motivation to maintain the habit regularly. Additionally, existing solutions don't replicate culturally nostalgic teacher-student interactions common in Korean/Asian education systems.
Solution
AI-powered diary tool (teacher-stamped journaling app) where users write entries and receive AI-generated personalized comments with symbolic teacher stamps and emotion analysis. Example: Upload diary text/photo → AI provides warm feedback mimicking a mentor, with stamps like "Great Job" delivered the next morning.
Customers
Students and working professionals in Korea/Asia nostalgic about school diary stamp traditions + individuals seeking emotional support through journaling. User behavior: Regularly journals, values cultural nostalgia, prefers guided reflection over self-driven entries.
Unique Features
1. Culturally specific teacher stamp system replicating Asian classroom rituals 2. AI mentor delivers warm, letter-like feedback (vs. analytics-driven tools) 3. Morning surprise feature delays comments to mimic anticipation of physical mail 4. Combines photo uploads with text for richer memory capture
User Comments
Feels like having a supportive teacher again; Stamps trigger positive childhood memories; Morning comments add delightful routine; Emotion analysis helps self-awareness; Photo integration enhances diary depth
Traction
Launched 4 months ago with 1,000+ ProductHunt upvotes (Top 5 Product of the Day). 500+ active users, $5k MRR. Founder has 2.3k X followers. Recent update: Multi-language stamp options (Korean/English).
Market Size
Global mental health apps market valued at $5.2 billion in 2022 (Grand View Research). Emotional well-being-focused apps like Heart Stamp target the journaling niche growing at 8.3% CAGR, with Asia-Pacific as fastest-growing region.
