Last updated 30 October 2026
wren is a local app, on your Mac and on your iPhone. Your tasks live in a database on the device you typed them on — there is no account and no server of ours holding a copy. Turn on iCloud sync and a copy also goes to your own iCloud, which Apple holds, not us. This page is the short, complete list of what that means and where the exceptions are.
On a Mac, everything wren knows sits in
~/Library/Application Support/com.sergedevs.wren.mac: the
tasks you typed, your tags, your settings, your licence key, and a local
usage log the app shows you under Settings → Ranking accuracy. Versions
before October 2026 used com.wren.app; the first launch of a
newer one copies that folder over and leaves the original where it was.
On an iPhone, the same things minus the licence and the log sit inside wren's own storage on the phone. A small copy of the top five is kept alongside it for the home-screen widget and the pinned task on the lock screen, so they can show your list without opening the app.
The usage log never leaves the Mac. It exists so the ranking can be checked against reality — whether the top of the list is actually what you finish — and it is readable by you, in the app, at any time. Deleting the Mac folder, or deleting the app from the iPhone, deletes all of it on that device, permanently.
Sync is off by default on both. Switch it on and each device writes a file with your tasks and tags to wren's folder in your own iCloud, and reads the files your other devices wrote. Apple stores those files under your Apple Account and its privacy policy; we have no access to them and no server in between.
Switching sync off stops wren writing there. To delete what is already in iCloud, use Settings → your name → iCloud → Manage Storage on the iPhone, or System Settings → Apple Account → iCloud on the Mac.
wren for Mac can send a captured task to Anthropic's API to clean up its title and dates. This is off unless you add your own Anthropic API key in Settings. When it is on, the text of that task and nothing else is sent to Anthropic under your key and their terms. Turn it off, or never add a key, and no task text leaves the machine. The iPhone app has no such feature and sends nothing anywhere.
The iPhone app is free: there is no purchase, no licence and nothing to check. On a Mac, activating a licence sends the key and a device label (your Mac's computer name) to Polar, who issued it, so it can be checked and counted against the licence. The app re-checks about once a week. Nothing about your tasks is sent with it — the request contains the key, the organisation it belongs to and that label.
Purchases are handled by Polar as merchant of record. They take your payment and billing details, they issue and email the licence key, and we never see or store a card number. Their privacy policy governs that data: polar.sh/legal/privacy.
If you grant calendar access, on either device, wren reads free/busy times for today so it can tell you how many hours are actually open. It reads start and end times, all-day flags and availability — never event titles, attendees, notes or locations. The data is used on the device, in the moment, and is not stored or transmitted. Deny access and every other feature works; the free-hours figure simply does not appear.
Saying "Add a task to wren" goes through Siri, and Apple handles the speech under its own privacy policy; what arrives in wren is the text, and it stays on the phone like anything typed. The widget and a pinned task show task titles on your home and lock screens, where anyone holding the phone can see them — remove the widget or unpin the task if that matters.
Neither app contains analytics, advertising, tracking or a crash reporter of ours. On the App Store, wren is listed as Data Not Collected. If you have chosen to share analytics with app developers in your iPhone's privacy settings, Apple may pass us anonymous crash reports; that is Apple's setting, off unless you turned it on.
wren.sergedevs.com uses Google Analytics 4 to count visits. It sets cookies and records the pages you viewed, a rough location derived from your IP address, and what kind of device and browser you used. It is there to tell us whether anyone is reading the page — not to build a profile, and it is never joined up with anything from the app, which does not talk to this site at all.
If you would rather not be counted, any tracker blocker or Google's opt-out add-on stops it, and nothing on the site depends on it working.
The only email a Mac purchase produces is Polar's receipt and licence key; the free iPhone app produces none. You are not added to a mailing list, and we do not sell, rent or share your address.
Your data is already in your hands: the database on each device is yours, and deleting it — the Mac folder above, or the app on the iPhone — takes effect immediately. With sync on, the only other copy is in your own iCloud, deleted as described above. There is no server-side copy of ours to request or erase.
For anything attached to a purchase — a receipt, a licence, an erasure request — write to contact@sergedevs.com and we will handle it or point you to Polar, whichever holds it.
wren is not directed at children under 13 and is not marketed to them.
If this policy changes, the date at the top changes with it. A change that affects what leaves your devices will be called out in the apps' release notes, not buried here.