orOS privacy policy

Applies to orOS at useoros.online, its installed app (PWA), the orOS Android app, orOS Portable and the bootable orOS USB, and orders from the orOS shop. Last updated: 2 November 2026.

In short: orOS has no accounts, no cookies, no ads and no tracking or analytics. Everything you create stays in your browser on your own device. orOS has no server that collects or stores your data, and it never sells or shares it.

Who we are

orOS is free, open-source software (MIT licence) made by Christos Koulaxizis. The source code is public at github.com/koulaxizis/oros.

Your data stays on your device

Notes, contacts, calendars, files and everything else you create are saved in your browser's own storage on your device. Each browser and device keeps its own copy. Clearing the site's data in your browser deletes it from that device.

Optional encrypted sync

If you choose to, orOS can sync between your devices through your own Dropbox account, in its own app folder only. Your data is encrypted on your device with your passphrase before it is uploaded, so Dropbox cannot read it. The passphrase never leaves your device. You can disconnect at any time.

Online services some apps use

Some apps need the internet for what they show (for example weather forecasts, maps, radio stations or currency rates). They contact the service only when you use that feature, and send only what the feature needs (for example the city you search for). The full list, by app, is in the orOS Help, under Privacy, and in Settings › About orOS, credits and licences.

Some apps can also work with accounts you already have elsewhere (for example your mail provider, your shop or your task manager), only after you connect them yourself. orOS talks to those services from your browser or through the orOS relay, which passes requests through and keeps nothing. Your keys stay on your device.

Text recognition (the Contacts card scan), background removal, noise reduction and Montage subtitles run on your device; their models are downloaded once and your pictures and sound never leave the device.

Importing contacts from Google or Microsoft

In Contacts, From an account lets you copy your contacts from your Google account or your Microsoft account (Outlook.com, Hotmail, Microsoft 365) once:

orOS's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.

You can also remove orOS's access in your Google account or Microsoft account settings at any time, and delete any imported contact in Contacts.

Permissions on your device

Location, camera, microphone, notifications and the phone's contact list are used only when you use a feature that needs them, and only after your browser or phone asks you. In the orOS Android app, On this phone copies your orOS contacts and events into the phone's own Contacts and Calendar, only on that phone.

Health Connect (orOS Android app)

Only if you switch on Health Connect in Settings › Connected services in the orOS Android app and allow it on your phone, orOS reads your daily step counts, weight, resting heart rate, sleep, blood pressure, blood sugar and blood oxygen readings, drinks and workouts from Health Connect, and writes your orOS Water drinks and Workouts there, for the last 30 days. This data moves only between Health Connect and orOS on that phone. It is never sent to us or to anyone else, and it is not used for advertising. It reaches your other devices only through your own encrypted sync, if you use it. When you switch it off, orOS removes what it wrote to Health Connect. You can also take back the permission in Health Connect at any time.

orOS Portable and the bootable orOS USB

orOS Portable runs orOS from a USB stick, and the bootable orOS USB starts a computer straight into orOS. Both work like orOS in the browser: your data stays on the stick, and nothing is sent to us. The browser that comes with them is ungoogled-chromium, which is built not to send data to Google. They go online only for what you use (for example sync, or an app's online service), and they download a newer orOS from GitHub only when you run the update yourself.

Orders from the orOS shop

orOS itself is free. If you buy something from the orOS shop on Ko-fi (for example a ready-made orOS USB stick), Ko-fi and its payment provider (PayPal or Stripe) handle the payment; we never see your card details. We receive your name, e-mail address and shipping address, and use them only to send your order, answer your messages and issue the receipt the law requires. We share them only with the postal or courier service that delivers your order. We keep order records for as long as Greek tax law requires and then delete them, and we never use them for advertising or newsletters. Ko-fi's own privacy policy covers your Ko-fi account.

You can ask to see, correct or delete your order details (except what the law requires us to keep) by e-mail to koulaxizis@glarolykoi.net or with a message on Ko-fi. You can also complain to the Hellenic Data Protection Authority (dpa.gr).

Children

orOS collects no personal data from anyone, including children.

Disclaimer: use at your own risk

orOS and all its apps, sync, installers, orOS Portable, the bootable orOS USB, orOS Drive and the Android apps are free software, provided "as is", without warranty of any kind, as the MIT licence says. You are responsible for your own data: keep backups and keep sync turned on. To the fullest extent permitted by law, the makers of orOS and its contributors accept no liability for any loss of data or any other damage arising from the use of orOS.

Changes and contact

If this policy changes, the new version is published on this page with a new date. Questions and support: e-mail koulaxizis@glarolykoi.net, or open an issue at github.com/koulaxizis/oros/issues.