Monthr privacy
Last updated 2026-08-18
The short version. Monthr does not collect, transmit, or store any personal information. Your photos, your contacts' birthdays and the calendars you make never leave your Mac. There is no account and no telemetry. Monthr contacts us for two things only: a weekly check for a new version, and — only if you have entered a business license key — a re-check of that key about once a day.
What Monthr reads
Photos
Only the image files you explicitly drop onto a slot or choose through the open panel. Monthr reads them to lay them out and to embed them in the PDF you export. Your original files are never modified, moved, renamed or deleted. Monthr remembers the paths of the photos you chose so it can reopen your calendar next time; if a file has moved, the slot is emptied and Monthr says so.
Contacts
Only if you turn on "Birthdays from Contacts". macOS asks your permission the first time, and Monthr requests exactly two fields — name and birthday. It does not read phone numbers, email addresses, postal addresses, photos, notes, or anything else, and it does not write to your Contacts. If you decline, the rest of the app is unaffected. You can revoke access at any time in System Settings → Privacy & Security → Contacts.
What stays on your Mac
Monthr keeps its own settings and your custom events in
~/Library/Application Support/Monthr/. Nothing in that folder is transmitted
anywhere. Deleting the app and that folder removes every trace of it.
The one network connection
Monthr checks twoplus11.com about once a week to ask whether a newer version has been released. That request sends the app version and nothing else — no identifier, no account, no information about your photos, contacts, calendars or Mac. If an update exists, Monthr downloads it from us and verifies its cryptographic signature before installing; a download that does not verify is refused.
You can turn the check off entirely in Settings → Updates. With it off, and with no business license key entered, Monthr makes no network connections at all.
What we never do
- No analytics, telemetry, crash reporting or usage tracking of any kind.
- No accounts and no sign-in. Monthr calls our licensing server only when you have entered a business license key — never for personal use.
- No advertising, and no data sold or shared with anyone.
- No cloud processing — every photo and every page is rendered locally.
Children
Monthr is a general-purpose tool and is not directed at children. Because it collects no personal information from anyone, it collects none from children.
Changes
If this policy ever changes, the updated version will be posted here with a new date, and material changes will be noted in the changelog.
Contact
Questions about privacy: report an issue.