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Snap reality. Code the vibe.
A professional color picker and palette builder for iOS & Android. Capture colors from the real world — translate them into design tokens, hex codes, and harmonious palettes in an instant.
Global ID print · Photo to ID photo · PDF · Watermark · Sizing
An all-in-one ID and document toolkit for global users — ID digitization, ID photos, document scan to PDF, image sizing, and built-in watermark protection. All on-device, nothing uploaded.
Create & Share personality quizzes online.
Build personality tests, psychological assessments and trivia quizzes in minutes — on web, iOS and Android. No coding needed. Multilingual support, real-time analytics, 20,000+ active users worldwide.
I'm Sifu Song — a systems thinker and full-stack developer with a passion for crafting digital products that are both technically elegant and beautifully useful.
As the author of SkyQuiz and IDPageMaker, and co-creator of PaletteTap, I believe great software lives at the intersection of rigorous engineering and creative intuition.
Have an idea? Want to collaborate? I'm always open to interesting conversations.