Adobe retired the Fill & Sign mobile app. JustFill picks up the Fill workflow — and uses AI to place the fields for you on scanned, flat, and complex PDFs, instead of tapping in every spot by hand.
Focused on the Fill part. For signatures you can insert a signature image; for drawn or typed e-signatures with audit trails use a dedicated tool.
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Last updated: June 2026
Adobe's dedicated Fill & Sign mobile app has been retired. Adobe now directs users to Acrobat Reader Mobile for Fill & Sign workflows, and the old standalone app no longer receives updates or support.
That matters if your main workflow was quick form filling: open a PDF, place text, add a signature image, and download a completed copy. JustFill focuses on that specific workflow in the browser, with stronger support for scanned and flat PDFs that do not contain embedded AcroForm fields.
Adobe Fill & Sign covered a narrow slice of form work. Here's what JustFill does differently.
Adobe retired the Fill & Sign mobile app in 2025 and now directs users to the Acrobat Reader mobile app. If you relied on the dedicated Fill & Sign app, you need a replacement — JustFill runs in any mobile browser with no install.
On password-protected or restricted PDFs, Adobe greys the tools out entirely. And on scans or flat forms it works only one tap at a time — you place every field by hand. JustFill draws fields on top of any PDF — scans, flat forms, or exported Word documents — and can auto-detect them for you.
Adobe's Fill & Sign replacement path leads into Acrobat subscriptions starting at $12.99/month. JustFill has a permanent free tier where you can draw fields and fill any PDF without paying, and paid plans start at $9.99/month with AI-powered field detection.
Drawing every field by hand on a 5-page form is tedious. On paid plans, JustFill analyzes your document and creates fillable fields for you — text lines, checkboxes, signature areas, even in complex tables. You review and adjust, then fill.
Every time you open the same form in Adobe you place fields again. JustFill saves your field layout as a template. Next month, upload the new PDF and the fields appear in the right place — you just fill in the new data and download.
JustFill includes voice dictation in English, Polish, German, French, and Spanish. Click the microphone, speak your data, and it's transcribed into the right fields. No equivalent feature in Adobe Fill & Sign.
A side-by-side look at how the options compare on availability, cost, and what each one can actually do.
| Option | Availability | Cost | Works on mobile | Scanned PDFs | Flat PDF (no AcroForm) | Reusable templates | AI field detection | Browser only |
|---|---|---|---|---|---|---|---|---|
| JustFill (Online) | Active | Free / from $9.99 | ||||||
| Adobe Fill & Sign mobile app | Retired 2025 | — | ||||||
| Acrobat Reader (free tier) | Active | Free | ||||||
| Adobe Acrobat Pro | Active | $19.99/mo (annual) |
Adobe pricing reflects published rates on adobe.com as of June 2026. Acrobat Studio at $24.99/mo adds AI Assistant; Acrobat Pro annual at $19.99/mo (monthly billing is $29.99/mo).
If any of these sound familiar, JustFill handles them differently.
The PDF is password-protected or the author set editing/security restrictions. On a locked document Acrobat disables the Fill & Sign tools.
JustFill draws fields on top of the image — restrictions don't matter because the original is untouched until download.
Acrobat can't recognize the document structure — common on scans, photographs of forms, or PDFs generated from unusual sources.
JustFill treats every PDF as an image and lets you place fields anywhere, regardless of how the file was produced.
Adobe retired the dedicated Fill & Sign mobile app in 2025. The migration path is to install the full Acrobat Reader mobile app.
JustFill runs in mobile Safari, Chrome, and Firefox. Nothing to install. Touch interface for drawing and typing fields.
Adobe Fill & Sign has no template feature — every time you open the same form you place fields again.
Save your field layout once. Next time the same form opens, fields are already in place.
Acrobat Standard starts at $12.99/month, Pro at $19.99/month annually, and advanced AI features are in the $24.99/month Studio tier.
JustFill has a permanent free tier. Paid plans start lower than Acrobat Standard and include AI features Acrobat charges extra for.
$0 / forever
Covers the core Fill workflow at zero cost. See FAQ for signature notes.
from $9.99 / month
Cheaper than Acrobat Standard ($12.99/mo) and includes AI features Acrobat charges $24.99/mo for.
Convert any PDF — scanned, flat, or exported from Word — into a fillable form.
Browser-based PDF form filler — upload, fill, and download without installing anything.
Full-featured free PDF form filler with no watermarks. Draw fields, type, and download.
Upload your PDF, draw or auto-detect fields, fill, and download — no Adobe subscription, no app install, no watermarks.
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