ForeFlight Mobile HD v3.6 and higher allows you to use your own PDF procedure diagrams in the app. BYOP is available on both the iPad and iPhone version of the app if you have FFM v3.9 or higher.
Copy all of your PDF files to an empty directory and rename your files to one of the following formats:
KSFO_Arrival_Big Sur Two.pdf
KHOU_Special Ops_NVG Approach.pdf
If the files do not match this format exactly, ForeFlight cannot recognize them and they will not show up inside the app. The airport code (FAA, ICAO, or IATA) is required, and is always followed by an underscore. This is followed by an optional category name (e.g. Departure, Arrival, Custom), then by the name of the procedure. Filenames can contain spaces and other special characters. The file must have a .pdf extension, or it will not be recognized by the app.
For Taxi Diagrams, you can implement the airport view "Taxiways" button within ForeFlight mobile by using the word "Taxi" as the category name. For example, the KCLL Airport Diagram should be named KCLL_Taxi_Airport Diagram.pdf in order to map the "Taxiways" button to the procedure.
Create a file named Procedures.zip containing your PDF files. All of the PDFs should be in the root of the ZIP file, without any directories or folders included.
If you are using a Mac, select all of your files inside Finder, right click, and select "Compress X Items" from the pop-up menu. This will create a file named Archive.zip. Rename it to Procedures.zip
If you are using a PC, use a program like WinZip for making the ZIP file. Make sure to name it Procedures.zip
Plug your iPad or iPhone into your computer via the Apple USB cord. Start iTunes on your computer, or wait for it to automatically start.
Inside iTunes, click on the name of your iPad, iPhone, or iPod Touch. You will find this name under the 'Devices' listing on the left side of the screen. Make sure you click on the device that you want to copy procedures to.
If you don't see your device name listed, make sure it is plugged in properly. Try disconnecting the USB cable from both your device and the computer, and then and plugging it in again.
Inside the window for your device, click on the 'Apps' tab at the top. It should show all of the apps you have installed on your device.
Scroll to the 'File Sharing' section at the bottom of the page and click on 'ForeFlight'. On the right, you will see a listing of 'ForeFlight Documents'. If this is the first time you've added procedures to the app, this listing will be empty.
Drag the Procedures.zip file that you created in Step 1 and drop it onto the 'ForeFlight Documents' table. While the file is copying over to your device, and you will see a brief 'Sync in Progress' message on your device.
After the copying has completed, launch ForeFlight on your iPad or iPhone. The new procedures will show up automatically in the specified airports. If you were running ForeFlight and viewing an airport while the files copied over, you will need to change to a new airport inside the app before you can see the new files.
If you specified a category in the procedure file name, it will show up in that category (example: "My Procedures" in the screenshot below). If you did not specify a category in the file name, the procedure will show up in the "Other" category for that airport.