Relevia — Privacy Policy
Last updated: October 26, 2026
This policy explains what data Relevia ("the app") handles. The app is published by Yabin Alejandro Lagunes Cuevas, trading as The Alchemist Code ("we"), who is responsible for your data. Contact: [email protected].
The short version
- There is no account. We never ask for your name, email or password.
- Your shift rotation, shift types, day changes, notes, hours and pay settings are stored only on your device. We do not upload them anywhere and we don't run a server that stores calendars.
- When you share your calendar, the link carries it inside the link, after the "#". Browsers never send that part to a website, so our web host never sees it.
- Shift reminders are scheduled on your phone. No server sends them.
- The app does not read your phone's calendar, contacts or location, and it works fully offline.
- The app shows ads and uses analytics and crash reporting. Those services, run by Google, collect some technical data, described below.
Data stored on your device
Your calendars (name, color, rotation and the day it starts), your shift types (name, letter, color, start time, length and unpaid break), the days you changed (shift, day off, vacation, absence, swap with the name you typed, overtime, other hours and notes), the calendars other people shared with you, your reminder settings and, if you use them, your pay settings (hourly rate, overtime multiplier, night and weekend premiums). They stay on your phone.
- Backup file, CSV and calendar (.ics) export: the app creates these files only when you ask. You decide where to save them and who to share them with. We never receive them. If you import an .ics file into Google Calendar, Outlook or another calendar, that service keeps it under its own policy.
- Home-screen widget: it shows today's shift and the next days, read from the app's data on your phone.
- Android backup: if backup to your Google account is turned on in your phone's settings, Android may include the app's data in your device backup so it comes back when you move to a new phone. Android makes that backup and stores it encrypted in your Google account. We have no access to it.
You can erase everything at any time in Settings › Delete all my data. Uninstalling the app also removes it from the phone.
Shared calendar links
When you tap Share my calendar, the app builds a link on your phone and hands it to the app you choose (WhatsApp, Messages, email…). We are not involved in sending it.
- What a link contains: the calendar's name, its rotation and start day, its shift types (names, letters, colors and times) and your changes for the next 90 days (shift, day off, vacation, absence, other hours, overtime and the name you typed in a swap). It does not contain your notes or your pay settings.
- How it is protected: that data travels after the "#" in the address. Browsers keep that part on the device and never send it to the website, so our web host never receives it. The data is also scrambled so it can't be read at a glance. It is not encrypted: anyone who has the link can open it, so send it only to people you want to see your shifts.
- What our web host sees when a link is opened: the same as any website, a request for the page
relevia.alekla.com/c/with the IP address, browser type and time, kept in the standard access logs of our host and of Cloudflare, which delivers the page. Never your shifts. - The link page has no ads, no analytics, no cookies and loads nothing from other websites.
- If someone shares their calendar with you and you add it to the app, it is stored on your phone like your own calendar. You can delete it anytime in Calendars.
Data collected by third-party services (in the app)
| Service | What it collects | Why |
|---|---|---|
| Google AdMob (ads) | IP address (used to estimate approximate location), Android advertising ID and app set ID, interactions with ads and the app, performance diagnostics | Showing ads, measuring them, preventing fraud |
| Google Analytics for Firebase | App-instance ID, advertising ID, approximate location derived from a masked IP address, screen views, sessions and purchase events | Understanding how the app is used |
| Firebase Crashlytics | Crash stack traces, device metadata at the time of a crash, app state, an installation identifier | Finding and fixing crashes |
| Firebase Remote Config | Country, language, time zone, OS and app version | Adjusting app settings remotely |
| Google Play Billing | Payment details and your purchase | Processing your Premium subscription or one-time purchase (we never see your card) |
None of these services receives your shifts, notes, the names you typed or your pay settings. All of this data is encrypted in transit. Each provider handles it under its own privacy policy:
- Google: https://policies.google.com/privacy
- How Google uses data from apps that use its services: https://policies.google.com/technologies/partner-sites
Your choices
- Ad personalization (EEA, UK, Switzerland): the app asks for your consent before showing personalized ads, and you can change your choice anytime in Settings › Ad privacy options.
- Advertising ID: you can reset or delete it in your Android settings under Privacy › Ads.
- Notifications: shift reminders are optional, and so is the reminder five days before each renewal if you take out a subscription. You can deny the permission and still use everything, or revoke it anytime in your phone's settings.
- Premium removes all ads.
Your rights
You can ask us about your data or to delete it by writing to [email protected]. Because the app has no account and your data stays on your phone and inside the links you send, we hold nothing that identifies you; deleting your data in the app removes it for good.
Children
The app is not directed at children under 13 and we do not knowingly collect data from them.
Changes
If this policy changes, the new version will be posted at this address with an updated date.
Contact
Yabin Alejandro Lagunes Cuevas (The Alchemist Code), Mexico · [email protected]