Privacy Policy
- Shelfr reads, converts, and sends your ebooks entirely on your Mac. Nothing about your books — titles, authors, covers, or the files themselves — ever leaves your computer.
- No usage analytics, no accounts. Shelfr keeps a small library index on your own Mac so your shelf survives a relaunch; that index is never uploaded.
- Shelfr makes a weekly check for a new version, which we count — see section 3. You can turn it off. Only if you enter a business license key, it also re-checks that key with us about once a day; with no key stored, that request never happens. If you buy a business license, that purchase happens here on the website (payment is handled by Stripe — we never see your card number). Your books are never involved.
1. Who We Are
Shelfr is made by twoplus11 LLC, a Missouri limited liability company (twoplus11.com). When this policy says "we," "us," or "our," it means twoplus11 LLC.
Questions about this policy? Email us at jeremy@twoplus11.com.
2. Data We Do Not Collect
Shelfr is built to be completely private:
- Your books are yours. Everything Shelfr does — reading a cover and author out of an EPUB, converting between formats, copying a book to a reader — happens locally on your Mac. No book, filename, cover, title, or author is ever uploaded to us or anyone else.
- The library index stays on your Mac. So your shelf is still there next time you open the app, Shelfr saves a small index of your books (their file paths, titles, authors, and cached cover images) in the app's own folder under Application Support on your Mac. This never leaves your computer, and you can delete it at any time by removing the app's Application Support folder.
- No usage analytics. The app does not report usage or track what you read or send. The requests it makes to us are the update check described in section 3, which you can turn off, and — only if you have entered a business license key — the daily re-check of that key.
- No account, ever. Shelfr needs no sign-up and has no login screen. Personal use needs no key at all. Commercial use means pasting a license key into the app's License panel, which activates that key with us — section 3 says exactly what that request carries.
- Converting a book is local, too. Native conversions run inside the app. If you convert to a Kindle format and have the free, third-party Calibre installed, Shelfr runs Calibre's converter as a local process on your Mac — no network is involved, and we receive nothing about it.
3. Data We Do Collect
Business-license purchases. If you buy a Business License, you enter your company name, work email, and number of devices in our checkout. We receive your company name and email so we can deliver your license key and keep a record of the purchase. Payment is processed by Stripe — your card details go straight to Stripe, and we never see or store them.
The business license check. Your license key is emailed to you when you buy. Entering it in the app's License panel activates that key with us, and the app re-checks it about once a day while you are online. Each check carries the key, a truncated SHA-256 hash of your Mac's hardware serial number, the app's version, and a device name. That name is only ever what you typed into the app's “Name this computer” box, and nothing at all if you left it empty: nothing is substituted for a name you did not give, not your Mac's Sharing name, not its host name, not your account name. It is there so that a business can tell its seats apart, and you can change it or clear it whenever you like. It carries nothing about your files or what you did in the app. With no key entered, none of this ever happens. If our server cannot be reached, the app keeps working on the cached result for 72 hours.
Update checks. Shelfr checks whether a newer version exists — automatically about once a week, and whenever you check manually. You can switch the automatic check off. The request goes to api.twoplus11.com and identifies the app and the version you are running; like any web request, it also carries your IP address. It says nothing about your Mac, your readers, or your books.
What we record when it checks. We log each check, so that we can tell roughly how many people still use the app: which app it was, the version reported, the date, the user-agent string, and a salted hash of your IP address — never the address itself, and the salt changes every day. Nothing in that record is tied to your name, an account, or a license. If you go on to install the update, that download is counted the same way. With no license key entered, this is the only thing the app ever sends us.
4. If You Contact Us
If you email us — for support or a question about your business license — we receive your email address and whatever you choose to put in your message. We use that information only to reply to you. We do not sell or share it.
5. Downloading the App
Shelfr is downloaded from our website, which is hosted by a third-party web host. Like any website, the host may keep standard server access logs (such as IP address) for security and operational purposes. This happens at the web-server level when you visit the download page — the Shelfr application itself does not transmit anything about your books.
6. Children's Privacy
Shelfr is not directed at children under 13, and we do not knowingly collect personal information from children under 13.
7. Your Rights
If you are in the European Union, United Kingdom, or California, you may have the right to access, correct, or delete personal data we hold about you. The only personal data we hold is what you send us by email and, for business-license holders, the company name and email tied to your purchase. You can exercise these rights by contacting jeremy@twoplus11.com. We will respond within 30 days. Your business-license record is what evidences the license, so deleting it also ends the license.
8. Changes to This Policy
We may update this Privacy Policy from time to time. We will update the "Effective date" at the top of this page when we do. We encourage you to review this page periodically.
9. Contact
Questions or concerns about this Privacy Policy? Contact us at:
twoplus11 LLC
jeremy@twoplus11.com