
ReadPDB
Bring back your .pdb library
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Free
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About
Bring your Palm-era ebook library back to life.
ReadPDB opens compatible, non-DRM iSilo 3 and PalmDOC ebook documents stored as Palm Database (.pdb) files. Import books directly from the Files app and read them on your iPhone or iPad—no account or internet connection required.
Features
• Import one or more compatible .pdb books from the Files app
• Render supported text formatting and internal links
• Automatically return to your last reading position
• Adjust text size for comfortable reading
• Choose Light, Dark, or System appearance
• Navigate with Back, Forward, and Home controls
• Highlight passages for later reference
• Share selected text using the standard iOS share sheet
• Remove imported books from your library at any time
Offline reading
ReadPDB has no accounts, subscriptions, advertising, analytics, or tracking. Your books remain on your device and are never uploaded or processed by external servers.
Compatibility
ReadPDB currently supports compatible, non-DRM iSilo 3 documents and PalmDOC-family documents (including TealDoc and AportisDoc). The .pdb extension was shared by many Palm OS applications, so other .pdb files may use formats that ReadPDB cannot open.
The following are not currently supported:
• Password- or registration-protected books
• MOBI and other Palm Database variants
• Damaged or corrupted files
• Unrelated files that also use the .pdb extension
• PDF documents
• Embedded images within documents
ReadPDB does not include, sell, or download books. Import only documents that you own or have permission to use.
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What's New in ReadPDB
1.1.0
August 23, 2026
ReadPDB now opens PalmDOC and TealDoc books alongside iSilo 3. Import a compatible .pdb file from Files, Mail, or AirDrop. Other Palm database formats are still named and refused rather than opened.
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