Questions?
Answers.

Fyllyo reads your documents and fills the PDF form for you, on your Mac. It works with any fillable form and does the calculations and formatting. Where it isn’t sure, it leaves the field empty and tells you why. AI form filling is $99 once. Every other PDF tool is free, with no account: reading, signing, organizing pages, combining files, recognizing text in scans, password protection, redaction, certificate signing, text editing and XFA forms. See what’s free and what’s paid →

ChatGPT can fill a PDF form: in our test of 22 forms, its Codex agent got 99.1% of fields right and Fyllyo got 94.6%. But Codex sends the documents it reads to OpenAI and took 3 minutes 22 seconds a form. Fyllyo fills on your Mac in about 23 seconds, uploads nothing, and costs nothing per form after the one-time license. See the ChatGPT vs Fyllyo test →

Yes, for most PDF work on a Mac. It doesn’t convert to Word or Excel, compare documents or send for signature, and it doesn’t run on Windows. If you need those, keep Acrobat. Compare with Acrobat →

Preview is good for reading and simple edits. Fyllyo also opens and fills XFA forms such as Canada’s IRCC forms, runs the scripts in forms that calculate their own totals, and edits text. Its redaction removes what’s under each mark, then checks comments, field values, bookmarks, document details and attachments for leftovers. It also signs with a certificate, and later saves keep the signature valid.

Anyone who fills a PDF form from documents they already have: your own paperwork, such as an I-864 or a 1040-X, or the same forms again and again for clients. Every PDF tool, including redaction, certificate signing and text editing, is free. How form filling works →

No to both. You get a filled PDF to review and send yourself.

No. Filling and text recognition happen on your Mac. Only custom-form setup sends the blank form and your instructions. How privacy works →

AI form filling is 100% local. Your documents and filled PDFs are never sent. When you add your own form, the blank fillable PDF, its official instructions and your note go to Fyllyo Cloud, or to your own OpenAI or Anthropic key, so Fyllyo can learn the form. Keep personal details out of the instructions and the note. The app also connects for things that don’t involve your documents, such as updates and signing in. What the app connects to →

Yes. The free PDF tools never need a connection. AI form filling works offline once its model has downloaded and the form is set up. The model downloads when your trial or license starts. Setting up a new custom form needs a connection.

A growing library of forms ready to fill, including IRS forms like 1040-X, 1120-S and 2553, USCIS I-864, passport forms DS-11 and DS-5507, and New York court forms. Browse the library to see them all. Browse the form library →

Yes. Add the blank fillable PDF, and Fyllyo learns it once. It works out what each field means and writes the form’s calculations and rules, then tests itself on test clients before you use it. The official instructions help, and a note is optional. Then reuse the form with each new set of documents. Fill any PDF →

PDFs, scans, photos, Word files and typed notes, such as an email or phone answers. Add as many files as the form needs. If a PDF has a password, Fyllyo asks for it and unlocks a copy on your Mac. Clear, readable documents give the best results.

Fyllyo is tested most with English documents, and some Spanish. Documents in other languages can work, but check those answers carefully.

The AI only reads. Tested formulas do the math and put each answer in place. When something doesn’t add up, Fyllyo leaves the field empty and says why. For example, a value isn’t in the documents, two documents disagree, or an ID is in the wrong box. Each answer shows the line it came from, and you review and correct it before saving. Custom forms are tested on test clients before you use them.

Add the blank fillable PDF, and Fyllyo learns it once. Or tell us which form you need. Requests decide which forms we add next. Request a form →

AI form filling is $99 once. That buys a lifetime license for one Mac at a time, with free updates. There’s no subscription and no per-fill charge. Every other PDF tool is free. Setting up a custom form of your own is paid with credits or your own AI key. See pricing →

Yes, of AI form filling. Sign in to the app to try it free for 5 days, with no credit card required. The PDF tools need no account and keep working after the trial.

Credits pay for one thing: Fyllyo setting up your own fillable PDF. $1 buys 100 credits, purchases start at $10, and credits never expire. Filling uses no credits. How custom-form setup works →

No. Fyllyo Cloud sets up new forms, paid with credits. You can use your own OpenAI or Anthropic key instead. That provider then charges you for setup. Filling never needs a key.

The license is active on one Mac at a time. To switch, free it from the app or from your account’s license settings, then sign in on the other Mac and choose Activate on this Mac.

Yes. Email arun@fyllyo.com for volume pricing.

Apple silicon Macs, M1 or later, with macOS 13 Ventura or later. 16 GB of memory is recommended for AI form filling. Intel Macs are not supported.

About 450 MB for the app. AI form filling adds a model of about 5 GB, plus about 1 GB for scans and photos. It downloads when your trial or license starts.

No. Fyllyo is Mac-only. Tell us if you need Windows. Tell us →