AHT Books: PDF Reader & Notes

AHT Apps

About this app

AHT Books is an offline PDF reader and study app. Organize your documents, pick up where you left off, mark up pages, take handwritten notes, and review with flashcards, all on your device.

READ YOUR WAY
• Continuous scrolling, horizontal page turning, single-page reading, or Book mode with a page curl
• Zoom and pan, browse page thumbnails, and use a PDF’s table of contents
• Light, Dark, Sepia and Mint page colors, plus a dark mode for the whole app
• Return to your last reading position, even in large textbooks and manuals
• Search PDF text when the document contains selectable text

ORGANIZE YOUR LIBRARY
• Import PDFs from your device, or open them from other apps with “Open with”
• Browse recently opened documents, favorites, and collections
• Search, sort, and switch between grid and list views
• See reading progress and document details

ANNOTATE AS YOU READ
• Pick tools from a spinning tool dial at the edge of the page
• Highlight, underline, or strike through text, in bright or soft colors, or any color you choose
• Draw with fine pens, pencil, marker, or highlighter; add lines, arrows, rectangles, and ellipses
• Add bookmarks and sticky notes, erase, and undo or redo
• Export an annotated copy of a PDF

HANDWRITTEN NOTES
• Notebooks with blank, ruled, grid, dotted, Cornell, music, and other page templates
• Low-latency stylus writing with pens from 0.1 mm, shapes, lasso, text, photos, and sticky notes
• Study tape to hide answers, and a laser pointer for presenting
• Send a passage or a clip of a page from a book into your notes, or keep notes open beside the book
• Folders, tags, search, and export to PDF or PNG

FLASHCARDS
• Basic, reversed, and fill-in-the-blank (cloze) cards with pictures and handwriting
• Spaced repetition with daily limits and review statistics
• Make a card from text you select in a book

FILL & SIGN
• Add your signature, initials, text, dates, and checkmarks to a PDF
• Draw your signature, or photograph it on paper
• A signed copy is saved; the original stays unchanged

MAKE READING YOURS
Set a daily reading goal, adjust brightness, page spacing, and orientation, keep the screen awake, use volume buttons to turn pages, or read in immersive mode.

AHT Books keeps your library, notes, and reading data on your device. There is no account and no ads. Scanned PDFs without a text layer can be read, but their text cannot be searched. OCR is not included.

AHT Books is made by Al Hadaf Technologies (AHT).

What’s new

BookFlow is now AHT Books — same app, with your library, notes and flashcards just as you left them.
• Stylus writing no longer disappears when your hand rests on the screen
• Tapping Back twice no longer leaves a blank screen or skips a screen
• Large, image-heavy PDFs such as aviation handbooks no longer crash, and their text can be searched
• New tool dial for annotating, finer pens, more highlight colors, and Fill & Sign