Same question, different right answer in each market.
Korean, Japanese, and American readers search for the same things — and find different right answers. Pregnancy week math, BMI thresholds, QR code use cases, age calculations, dog-breed fit. PiPi Worlds takes that gap seriously, and rewrites each topic using the primary source that actually applies.
Why we built this
Search "pregnancy week calculator" in English and you'll find a thousand near-identical pages. Search the Japanese equivalent and you'll find translations of those same English pages, with 母子健康手帳 timing missing. Search the Korean equivalent and you'll find blog posts that confuse unified-age law with traditional Korean age. We try to do better — same topic, different guides per market.
How it gets made
We don't translate. We rewrite. The English drafts cite CDC, ACOG, FDA, and IRS — the agencies an English reader can actually verify against. The Japanese drafts cite 厚生労働省 and 日本産科婦人科学会. The Korean drafts cite KSSO and 대한산부인과학회. Numbers, laws, and dates are checked against primary sources; failed verifications are removed rather than hedged.
Operating principles
Browser-only. Your inputs (age, weight, pregnancy week) never leave your browser. Quiet tone. Few exclamation marks, no emoji clutter, information first. Primary sources. No statistic appears in the body without a citation a reader can follow.