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Case Study — Digital Health · Japan
Nine weeks to show traction. Eight days to Japan.
- Client
- Aozora Health, Digital Health
- Market
- Japan
- Result
- First user in 8 days
The challenge
Aozora Health closed its Series B with Japan in the deck and nine weeks to show traction. A health product cannot soft-launch with approximate language: consent flows, dosage wording, and data-handling screens carry regulatory and cultural weight where mistakes erode trust permanently.
The team feared a choice between speed and safety. The sprint was sequenced so the highest-trust surfaces — consent, privacy, onboarding — cleared cultural review first, while lower-risk settings screens translated in parallel.
The sprint
What the twelve days covered
- Days 1–2: Impact-tiered audit — consent and privacy strings first, 620 strings total across iOS and web.
- Days 3–5: Cultural review led by Aiko Mori’s team: the “your data is safe” framing was rewritten for Japanese expectations of institutional reassurance.
- Days 6–8: Medical-terminology glossary lock with a bilingual clinician reviewer before translation.
- Days 9–10: Screenshot QA across iOS viewports; vertical-text and ruby-annotation checks on onboarding cards.
- Days 11–12: Staged rollout to a closed beta of Japanese users with rollback strings packaged.
Results
The first Japanese user was live in production on day 8. Beta comprehension scores on consent screens hit 94%, and the board slide Aozora needed practically wrote itself.
“Parlato got us to our first Japanese user in eight days. That slide carried the next board meeting.” — Ren Watanabe, CTO, Aozora Health