Last updated: May 14, 2026

Short version

Japanese Walker Pro does not collect, store, or transmit any personal data. Everything you do in the app — your sessions, your streak, your profile, your settings — stays on your iPhone.

We have no servers. We have no analytics. We have no third-party SDKs. We genuinely don’t know who you are, and we don’t want to.

What stays on your device

The app stores the following locally on your iPhone, and nowhere else:

The sessions you complete (date, length, cycle count, calories estimated)

Your streak count and history of the last 30 sessions

Your profile (sex, age, height, weight, optional body fat percentage, activity level) — used only to estimate calories

Your settings (default session length, workout mode, treadmill speed overrides, whether you’ve completed onboarding)

This data is stored in Apple’s standard on-device databases (SwiftData and UserDefaults). If you delete the app, this data is removed with it.

What we do not collect