JoinPDF

Add photos, PDFs, or a paper document you scan with the camera.
Every page lands on one board, so you see the finished PDF before you save.
Touch and hold a page to drag it into place. Rotate, duplicate, remove, or add a blank page.
Keep each page’s own size or fit everything to A4 or Letter, and choose the margin.
Open a password-protected PDF with its password, and lock the PDF you save with one of your own.
Everything happens on your phone or tablet, and nothing is uploaded.
Free: save up to 3 pages per PDF. JoinPDF Plus saves any number of pages and makes files smaller: a 1-year plan or a lifetime purchase.