The app
The OpenSourdough app at opensourdough.com/app has no accounts and no server of its own. Everything you enter — bakes, timings, starter feeds, ratings and notes — is saved in your browser's local storage on your device and is never sent to us. We cannot see it, back it up or recover it.
- Clearing your browser's data for this site deletes it, unless you have saved a backup file from the Journal tab. A backup is a file on your device; it is not uploaded anywhere.
- On iPhone and iPad, Safari deletes what a site has stored once you have used Safari for 7 days without visiting it. Added to your home screen, the app keeps its own count of days, so installing it and saving a backup now and then both help. See WebKit's announcement.
- Data does not sync between devices or browsers.
- If you allow notifications, they are created by the app on your device while it is open. No push service is involved.
- Photos you add to a bake are set into its photo card, which is saved in your browser on your device like the journal. The photos themselves are not kept. The card is drawn fresh, so it carries none of the hidden details a camera stores in a photo, such as where it was taken. It leaves your device only when you share or save it, and it is not part of a backup file.
- The app keeps a copy of its own files on your device so it can work offline.
- The app shows no advertising. The one outside script it loads is Cloudflare Web Analytics, described under The website below.
The website
The website and the app use Cloudflare Web Analytics, from our host, to count page views and see how fast pages load. It records the page you opened, the site that linked you to it, your browser, device type and country. It does not read your bakes, notes or anything else you enter. Cloudflare says it uses no cookies or local storage and does not fingerprint visitors; see Cloudflare's description. We use no other analytics. Fonts and images are served from this site, not from third-party services.
The history and science pages show videos from our YouTube channel. Until you press play, each is a picture served from this site, and nothing loads from YouTube. When you press play, the video loads from YouTube in its privacy-enhanced mode (youtube-nocookie.com); without JavaScript, the picture is a plain link that opens the video on youtube.com instead. YouTube says that in this mode, watching the video here is not used to personalise what you see on YouTube, or the ads shown to you elsewhere; see YouTube's description. YouTube, which is part of Google, still receives the request, such as your IP address, as any site you connect to does, under Google's privacy policy. Once it loads, the player may also store data on your device, such as cookies or local storage. If you click through to YouTube itself, YouTube's own terms apply there.
The site is hosted by Cloudflare, which, like any web host, processes technical information such as IP addresses to deliver pages and protect against abuse. See Cloudflare's privacy policy.
Advertising
This website does not show ads yet, and the app never will. If the website starts showing ads, they will be served by Google AdSense, and this section will be updated first. Then:
- Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this website or other websites.
- Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the Internet.
- You may opt out of personalised advertising by visiting Google Ads Settings, or opt out of some third-party vendors' use of cookies at aboutads.info.
- If you are in the European Economic Area, the UK or Switzerland, you are asked for consent before personalised ads are shown, and can change your choice at any time from the consent message's settings link.
Read how Google uses information from sites that use its services.
If you write to hello@opensourdough.com, your message and address are kept in our inbox, which runs on Google Workspace, so we can reply. They are not added to a mailing list, and we do not share them.
Children
The site is not directed at children under 13 and we do not knowingly collect information from them — or from anyone else.
Changes
If this policy changes, the date at the top will change with it.