Last updated: 27 September 2026
ECHO does not collect personal data and does not require an account.
Data stored on the device
Stars, shards, inventory, research, last map, and audio or haptic preferences are stored only on this device using Apple’s standard UserDefaults.
With a paired Apple Watch, wrist clears and relics pass between your iPhone and the watch through Apple’s WatchConnectivity, and a run steered from the watch sends its controls the same way. That traffic stays between your own devices; nothing goes to the developer.
Game Center
If you are signed in to Game Center on the device, the app sends your two ratings (iPhone and Apple Watch) to its leaderboards and your achievement progress to Apple's Game Center. Game Center is Apple's service and works under Apple's privacy policy; the developer does not receive your Apple ID or contact details. Signing in is optional, and the game plays the same without it.
Bug reports
Settings → Report a bug opens your mail app with a message to the developer that already names the app version, device model and system version. Nothing is sent unless you send it, and the message is used only to answer you and fix the problem.
What the app does not do
The app does not include analytics, advertising, tracking, its own accounts, or network calls required to play.
Changes
If this policy changes, the App Store listing and this file will be updated together.
Contact
sergii.ziborov@gmail.com
About this website
This website has no custom analytics, advertising scripts or contact forms. Email and GitHub links open their respective services. The hosting provider may process technical request and access data under its own policies.
Website note updated: 11 October 2026.
The English app policy is the maintained source text. The Russian page is its translation.