FieldStack
The plans you need. One field board.
Shape a large plan set around the work in front of you.
iPhone · No account · No subscription
FieldStack is an iPhone-first workspace for large construction PDFs. Read the complete plan set, stack the relevant sheets into one zoomable board, search the drawings, and add structured field checks and notes without changing the source files.
The complete plan set
Open the full construction PDF with continuous reading, deep zoom, drawing navigation, search, and favorites.
A board for today
Select one sheet or several related drawings and arrange them into a focused one-, two-, or three-column field board.
Search the drawings
Find rooms, doors, labels, and other plan text, then jump back to the matching sheet and location when coordinate data is available.
Checks and notes
Place Check or Note items on the board and track field-facing progress as Open, In Progress, Blocked, or Done.
Portable board handoff
Share a Board with its required source PDFs so another FieldStack user can import the layout without receiving your private field history.
The source stays clean
Boards and FieldStack overlays live in a separate private layer. Ordinary field work does not overwrite or flatten the imported PDF.
Personal and offline first
No FieldStack account or realtime team workspace is required. Imported plans and field data stay in app-owned local storage.
How it works
Import one or more construction PDFs through the system document picker.
Read the complete source, search it, and favorite drawings you return to often.
Select the sheets needed for the work at hand and turn them into one board.
Search, focus a sheet, and add a Check or Note at the exact plan location.
Return to Board or Today views to review the same saved field record.
Share a Board and its required source PDFs when another FieldStack user needs the same working layout.