Comparison

Snail Scan vs Sign Documents

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Snail Scan

Features
Read full description

Snail Scan will turn your device into a powerful portable scanner. It integrates the functions of document scanning, image and text extraction and recognition, PDF content editing, electronic signature and so on. Download this scanner app for free to instantly scan, save, and share any document in PDF, JPEG or TXT formats. Snail Scan will become an essential tool for your daily work or life. It can scan any content required, support a variety of image optimization modes, and manually adjust image parameters to quickly turn paper documents into clear scanned documents. Get this simple and practical scanner app now. == KEY FEATURES == DOCUMENT SCANNER – Scan documents and photos to PDF, JPEG, or TXT – Filters (black & white, whiteboard, photo) – Easily scan multiple pages into one document – Distortion correction, shadow removal and defect cleanup OCR (Text Recognition) – Recognize text from any scannable object with OCR – Text recognition and translation into multiple languages PDF CREATION & EDITING – Freely combine PDF documents, and perform page deletion, sequence adjustment, insertion support, page merging and other operations on multiple files – It supports one click smearing and adding comments to easily edit documents – Put your electronic signature on documents EASY DOCUMENT SHARING – Scan documents and share them in just a few taps – Save or share scanned files in PDF or JPG format – Save directly to photos DOCUMENT EDITOR & FILE MANAGER – Use file manager with folders, drag & drop, and document editing features – Sign your scans manually or add a signature from an image – Mark up documents, cover or blur text you don’t need to be seen – Sort files by time, date, or name – Optional table or set view mode Snail Scan is free to use for as long as you want. Terms of Use : https://sites.google.com/view/snailscan-eula-us Privacy Policy : https://sites.google.com/view/snailscan-privacy-us

About

Sign Documents

Digitally sign documents from your mobile device with a handwritten signature. Streamline your workflow by importing, signing, and sending various document formats securely, eliminating the need for printing or scanning.

Highlights
  • Digital handwritten signature creation
  • Secure document signing
  • Import from phone, email, cloud
  • Support for PDF, DOCX, and more
  • Sign and send directly
  • Signature history tracking
Features
Read full description

Sign any documents effortlessly with DocInk: The Essential Mobile Signature Solution. This app enables users to securely sign documents from a mobile device using a digitized handwritten signature, streamlining your workflow and eliminating the need for printing or scanning. Key Features: 1. Easy Document Import: Upload documents directly from your phone, email, or cloud storage. 2. Digital Signature Creation: Create a personalized, digitized version of your handwritten signature. 3. Secure Signing: Ensure your documents are signed securely with advanced encryption. 4. Multi-format Support: Sign documents in PDF, DOCX, and various other formats. 5. Sign and Send: Quickly sign and send documents to recipients without leaving the app. 6. Signature History: Keep track of your signed documents with an intuitive history feature. Subscription Plans: 1. Weekly Subscription 2. Annual Subscription Privacy Policy: https://docink.org/privacy Terms of Use: https://docink.org/terms Contact Us: https://docink.org

Screenshots

Snail Scan4 screens
Sign Documents4 screens

Verdict

The call

The clearest difference is iOS requirement: Snail Scan at 13.0 against Sign Documents's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Snail Scan sells 4 in-app purchases, starting at $4.99 per 7 days and Sign Documents sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Snail Scan ships an update every 11 days, Sign Documents weekly. The most recent releases landed on September 9, 2026 and September 22, 2026 respectively.

Scorecard1 real difference · 9 level
Snail Scan versus Sign Documents: the parameters behind the verdict, then further details
ParameterSnail ScanSign Documents
PriceFreeFree
Rating—5.0 (6 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—6 — better
Update frequencyEvery 11 daysWeekly — better
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size6 MB31 MB
Age rating4++4
Developer琳曼 张BMR Tools B.V

In-app purchases

4 purchases

Snail Scan

Subscriptions4
  • $4.99 per week$4.997 Days
  • $9.99 per month$9.991 Month
  • $19.99 per year$19.991 Year
Show 1 more
  • $39.99 per year3 Days trial$39.991 Year
2 purchases

Sign Documents

Subscriptions2
  • DocInk Premium3 Days trial$4.997 Days
  • DocInk Premium$19.991 Year

Questions

Is Snail Scan free?
Snail Scan is free to download, with in-app purchases available.
Is Sign Documents free?
Sign Documents is free to download, with in-app purchases available.
Do Snail Scan or Sign Documents have ads?
Neither Snail Scan nor Sign Documents shows ads.
Which is updated more often, Snail Scan or Sign Documents?
Snail Scan ships an update every 11 days, and Sign Documents weekly. Most recently, Snail Scan was updated on September 9, 2026 and Sign Documents on September 22, 2026.

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