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CLUSTER FILLING-FORMS-MOBILE · 13 ENTRIES · EARLIEST ENTRY 2021-03-29

Mobile PDF fill and sign apps

This cluster consists of mobile apps for creating, viewing, editing, filling forms, signing, annotating, merging, and managing PDFs, with some also offering OCR, barcode display, cloud sharing, or real-time collaboration. Dated entries span 2010 to 2026, with isolated entries in 2010 and 2013, a small concentration of three between 2020 and 2021, and single entries in 2023 and 2026. Traction leaders are effectively tied at 0 stars: eSign - Fill & Sign Form Docs, DocFill – PDF Editor & Merger, and PDF Wallet.

Entry timeline

ENTRY TIMELINE

APR 2010: 1APR 2013: 1NOV 2018: 1JUN 2020: 1MAR 2021: 1AUG 2021: 1MAR 2023: 1JUL 2023: 1JAN 2026: 2FEB 2026: 1JUN 2026: 1SEP 2026: 1
APR 2010SEP 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 2 hand-coded · 11 unlabelled

Operator · 1 indie · 8 commercial · 1 open source · 3 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 13 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01PDF Signature - eSign0★1 molivecommercialMobile app that lets users edit, fill, sign, annotate, and export PDF documents, including form fields and local secure storage.
  2. 02eSign - Fill & Sign Form Docs0★4 molivecommercialApp for filling and signing PDF forms on mobile devices with field detection, merging, annotation, OCR, and cloud storage integration.
  3. 03PDF Wallet0★7 mostaleliveopen sourceAndroid app to store and display important PDFs, with fullscreen barcode rendering for tickets and certificates.
  4. 04DocFill – PDF Editor & Merger0★4 moliveMobile app for filling and signing PDF forms, editing pages, merging files, and managing documents offline without an account.
  5. 05ESigner.App0★8 mostaleliveApp for editing and signing PDFs with fillable forms, markup tools, and the ability to add handwritten signatures and annotations.
  6. 06PDF Editor. Fill Forms & Sign0★1 yrabandonedlivecommercialMobile app for creating, viewing, editing, annotating, filling forms, and signing PDF documents directly on a device.
  7. 07PDF Reader Pro Edition®0★7 yrabandonedlivehand-codedcommercialPDF reader app for mobile devices that supports annotation, form filling, and real-time collaborative editing with chat.
  8. 08pdfFiller: edit PDF documents0★7 mostalelivecommercialMobile app for editing, signing, and managing PDF documents with annotations, eSignatures, and cloud sharing.
  9. 09Fill and Sign: PDF form filler0★11 mostalelivecommercialApp for filling and signing PDF forms with AI autofill and offline capability.
  10. 10Snappii Mobile Forms0★2 yrabandonedlivecommercialMobile forms app that turns uploaded PDFs and images into fillable mobile forms, with templates, autofill memory, and voice-to-text entry.
  11. 11MegaPDF0★unknownliveDesktop app for filling in, signing, searching, and redacting PDF forms locally on the user's computer.
  12. 12Form Zap0★6 yrabandonedlivehand-codedindieUtility app that lets users fill out PDF forms on a phone by tapping fields, typing, and undoing mistakes via gestures.
  13. 13eSign - Digital Signature0★7 mostalelivecommercialMobile app for signing and filling PDF forms with annotations, markup, and local document processing.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.