app-legal-docs

Privacy Policy — FolioBind: EPUB Studio

Effective Date: 22 September 2026 Developer: MLOGICTECH (Modern Logic Tech Solutions) Contact: support@mlogictech.com App Website: https://mlt-solutions.github.io/app-legal-docs/foliobind

Summary

FolioBind: EPUB Studio runs entirely on your iPhone or iPad. There are no accounts, no sign-up, no analytics and no servers belonging to us. We never receive your documents, your images, or your credentials.

The app does use the network, but only in the following situations, and only because you asked it to:

Fetching pictures that your own document refers to by link.
Sharing or emailing an EPUB, through Apple’s system share sheet or Mail composer.
Checking or completing an App Store purchase, through StoreKit.

Each is described in full below.

The app performs conversion of TXT, Markdown, DOCX, fixed-layout PDF, CBZ, ZIP image archives, and CBR sources, plus EPUB editing, entirely on-device. It does not use a developer-operated server, account, analytics, or advertising SDK.

1. Data We Do NOT Collect

We do not collect, store, receive or transmit to ourselves:

Personal information of any kind (name, email address, location)
The contents, names or paths of your files
The links contained in your documents
The images the app downloads
Your email address or your recipient’s address
Usage analytics, crash reports or telemetry
Device identifiers or IP addresses

The app has no “phone home” behaviour of any kind. We operate no server that receives data from this app.

2. Data Stored Locally on Your Device

The app writes generated books to its app Documents/Generated folder and keeps overwrite backups in Documents/Backups. Files staged for conversion or imported for editing are held in Documents/Incoming until you use them; once a staged file has produced its EPUB, that copy is deleted automatically, and you can clear anything left over from Settings. Preview extraction is disposable cache data, also clearable from Settings.

When you select an external folder, iOS supplies a security-scoped bookmark so the app can access that folder again; the bookmark remains on the device and can be disconnected in Settings. Files shared from another app pass through a private App Group inbox and are removed once consumed.

None of this data leaves your device. Uninstalling the app removes all of it.

3. Network Access — Downloading Pictures

When you convert a document, the app looks for image references inside your file and retrieves them so the pictures can be stored inside the finished EPUB.

The app ships no links, no catalogue, no search and no list of websites. It contacts only the addresses that already exist in the document you chose to convert, and it does so only when you start a conversion.
Requests are ordinary web requests. They carry a standard user-agent string and an Accept header for images. Your IP address is visible to the server you are contacting, exactly as it would be if you opened the same link in a browser.
Each website you contact this way is an independent third party with its own privacy policy. We have no relationship with them, receive nothing from them, and cannot see what you requested.
If your document refers to a Google Drive, Dropbox or OneDrive share link, the app rewrites it to that provider’s direct-download address so the picture can be retrieved rather than the preview page. Your use of those services remains governed by their own privacy policies.
Images referenced as files already on your device are read locally and involve no network activity at all.

No conversion ever happens automatically. Nothing is scanned or fetched on launch; every scan and every download follows an action you took.

Send to Kindle and Mail are optional actions you trigger explicitly. Send to Kindle opens Apple’s system share sheet so you can choose the Kindle app or another installed destination. Mail opens Apple’s standard Mail composer with the selected EPUB attached. Delivery is handled by the account configured in Mail, or by the app selected from the share sheet — the app does not receive, store, or transmit any mail account password.

Amazon, the Kindle app, Apple Mail, and other share destinations are independent third parties. Their own size, sender-approval, account, and delivery rules apply. If you send to a Kindle address, Amazon receives the book and handles it under Amazon’s Privacy Notice; Amazon documents EPUB support up to 200 MB for its wireless Send to Kindle service.

The app uses Apple StoreKit to display App Store pricing, determine verified Pro entitlements, make or restore a purchase, and open Apple’s subscription-management screen. Apple processes those requests under its own privacy terms. MLOGICTECH does not receive or store payment-card or App Store account credentials. The app stores only its local entitlement/ allowance state needed to apply the free daily output limit.

5. File Access

The app reads and writes only where you point it:

Reads .txt, .md, .docx, .pdf, .cbz, .zip, .cbr, and .epub files you choose through Files, Open In, or the share sheet, and their subfolders if you enable that option for a selected folder. It does not scan other folders automatically.
Reads image files on your device when your document refers to them.
Writes new .epub files to the app’s Documents/Generated folder.
Deletes files only when you explicitly select them and confirm the warning dialog. Deletion is permanent.

The app does not modify your source files, and does not upload any of your files anywhere except through the system share sheet or Mail composer you explicitly invoked.

6. Third-Party Components

The app is built with the following open-source libraries. None of them collects data or contacts any server on their own initiative.

Library	Licence	Purpose
ZIPFoundation 0.9.20	MIT	EPUB and DOCX ZIP container access
libarchive-swift (libarchive)	BSD 2-Clause / upstream notices	CBR/RAR archive reading
SwiftyOpenCC	MIT / upstream notices	Offline Simplified/Traditional Chinese conversion
SDWebImage 5.21.7	MIT	Image decoding and transformation
SDWebImageWebPCoder 0.15.0 / libwebp	MIT / BSD-style upstream notices	WebP decoding and encoding

7. Children’s Privacy

The app collects no information from anyone, including children, and is not directed at children under 13.

8. Your Choices

Do not want any network activity? Use documents that refer only to images already on your device. The app is then entirely offline.
Want to reclaim storage? Settings has dedicated buttons to clear generated books, overwrite backups, imported/staged files, and the preview cache, each behind its own confirmation.
Want to remove everything? Uninstall the app.

9. Changes to This Policy

We may update this Privacy Policy as the app changes. The effective date above will be updated accordingly. Continued use after a change constitutes acceptance of the updated policy.

10. Contact

Email: support@mlogictech.com Developer: MLOGICTECH (Modern Logic Tech Solutions)

Privacy Policy URL: https://mlt-solutions.github.io/app-legal-docs/foliobind/PRIVACY