Fly Infinity

PDF Filler

Fill & sign PDF forms offline. Free PDF editor & signature app, no watermark.

Everything you add becomes part of the page itself, so the form arrives filled in for whoever opens it.

  • Free
  • No account needed
  • Works offline
  • No watermark
Running here, on this pageThe app’s editor, filling in a form. A finger touches the page and a name appears where it touched, then the date, a signature and a tick — and then the finished file, open somewhere else, with every mark still on it.
  • Text lands where you tap
  • Sign with a finger, or type it
  • It opens the same anywhere
  • Files stay on your phone

Key features

What you actually get

Everything below is in the app today. Nothing here is a roadmap item.

  • Open any PDF, from anywhere

    Straight from Files, WhatsApp, Gmail or any app via "Open with". No import step, no conversion, no upload. Pinch to zoom for the fiddly bits and swipe through a multi-page form.

  • Tap and type onto the form

    Tap where you need it and type — name, address, email, any detail. Add today’s date with one tap or pick another, then move, resize and recolour anything you have added in black, blue, green or red.

  • Sign it your way

    Draw your signature with a finger and reuse it on every form after that, type your name in a handwriting style, or use a photo of one you signed on paper — taken there and then, or picked from your gallery. The paper behind it is removed automatically, so what lands on the form is a clean, see-through signature.

  • Tick, cross and mark up

    Drop checkmarks and crosses onto checkboxes, draw freehand, highlight a line, and add shapes — line, arrow, circle or rectangle — instead of fighting a text field.

  • Black out what should not be seen

    Redact an account number, an address or anything else before you send the form on. The blackout is part of the exported file, not a layer someone can peel off.

  • Notes and photos on the page

    Leave sticky notes and comments for whoever reads it next, or drop in a photo — a passport picture, an ID, any image — and position and resize it where it belongs.

  • Drafts that save themselves

    Stop halfway and come back later; work is saved as you go. Rename the file before you send it, so what arrives is not DOC_20260817_scan.pdf.

  • Clean export, no watermark

    Download the flattened PDF to your Downloads folder or share it straight to WhatsApp, Gmail or anywhere else. Nothing is stamped across it and nothing is held back for a paid tier.

What it looks like

Screens from the app

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Who it's for

Is this for you?

  • A form just landed in your WhatsApp

    Open it straight from the chat, type into it, sign it and send it back — without a printer, a scanner or a trip to anyone’s desk.

  • You need to send it back looking proper

    For bank, KYC or government paperwork that has to arrive as a clean PDF, not a photograph of a printed page taken at an angle.

  • It’s for your child’s school

    Admission forms, permission slips and scholarship paperwork, finished on your phone in a few minutes on the evening they are due.

  • You’re signing an agreement today

    Draw your signature once and reuse it on every form after that, so a rental or consent form takes a minute rather than an afternoon.

Price

What it costs

Free, with no subscription and no paid tier. One full-screen ad appears when you download or share a finished PDF — and if it cannot load, or you are offline, your file is still saved and shared normally.

Small print

Before you install

Everything this app is committed to, in the documents that commit it.

Privacy policy

Read exactly what stays on your phone, and precisely what the one outside company involved in this app can see.

Read the policy
PDF FillerProductivity · OfflinePDF Filler: Fill & Sign FormsGet it onGoogle Play