Privacy Policy
Lightning Log: Storm Distance, the Android app on Google Play. Effective November 11, 2026.
| App | Lightning Log: Storm Distance |
|---|---|
| Package | com.hydroengineer.lightninglog |
| Developer | Stone Lake Application Development (Google Play developer name) |
This page covers the Android app only. The Alexa skill has its own privacy policy.
What the app uses
The address or ZIP code you type. The app uses it only to find the spot to measure lightning distance from. A street address is sent once, directly from your phone, to the U.S. Census Bureau geocoder to get coordinates. A ZIP code is looked up on the phone from a built-in table and is not sent anywhere.
The app does not use your phone's location (GPS) and does not ask for location permission.
What the app stores, and where
On your phone only, in the app's private storage: the name you give each place, the matched address line the Census geocoder returned, and the coordinates rounded to two decimal places (about 1 kilometer).
What is sent to the developer's server
To find lightning near a place, the app sends that place's rounded coordinates (about 1 kilometer) to the Lightning Log server at lightning.hydrocomplete.com, about once a minute while the app is open on screen. The server compares them with recent NOAA satellite lightning data and answers. It does not log or keep the coordinates, and it does not receive your address, name, or any account or device identifier. Like any web server, its host may briefly see your IP address; the server uses it only to limit how often one connection can ask, holds it in memory for about a minute, and does not store it.
Who else sees what
- U.S. Census Bureau geocoder: the street address you type, once, when you add a place.
- Fly.io, which hosts the Lightning Log server, as described above.
The lightning data itself is NOAA's public GOES-19 Geostationary Lightning Mapper feed.
Deleting your data
Remove a place in the app's Settings. Uninstalling the app or clearing its storage in Android settings deletes everything. Device backup is turned off for this app. The server holds nothing about you to delete.
Purchases
Storm Tracker is a one-time in-app purchase sold and billed by Google Play. The app asks Google Play only whether you own it; it never sees your name, email address, or payment details. Google handles the purchase under the Google Privacy Policy.
No ads, no analytics, no accounts
The app shows no ads and contains no advertising, analytics, or crash-reporting SDKs. There is no sign-in and no account. Nothing is sold or shared for advertising, and nothing is used to build a profile.
Children
The app is not directed to children under 13 and does not knowingly collect personal information from them.
Changes
If this policy changes, the updated version will be posted at this address with a new effective date.
Contact
Stone Lake Application Development: hello@hydrocomplete.com