Trimestral PDF is the most direct way to work with PDFs on your mobile device, without uploading your documents to any server.
OPEN AND ORGANIZE
Open any PDF and read it with zoom. Organize the document as needed: rotate pages, delete them, rearrange them, extract the ones you need, and merge multiple PDFs into one.
SIGN
Sign with your finger, freehand, or write your signature in handwriting. You can also sign with your electronic certificate (FNMT or DNIe): the signature covers the entire document and can be verified with any validator, such as Adobe or government offices.
The signature is placed on a copy, so the original document is never modified.
YOUR DOCUMENTS ARE YOURS
The PDFs live only on your phone. They are not uploaded to any server, analyzed, or shared with anyone. There are no ads.
You log in with the same Google account as the other Trimestral apps.
FREE AND PRO
Free: View PDFs, organize them (rotate, delete, reorder, and extract pages), and sign by hand or by typing.
Pro (€0.99/month or €9.99/year): Sign with an electronic certificate and merge multiple PDFs into one.
View, edit, and sign PDFs on your mobile device. Your documents stay on your phone.