Comparison

Workshop AI vs Sign Doc

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

Head to head
About

Workshop AI

Effortlessly create a searchable inventory of your tools by simply taking photos. The app automatically identifies items, allowing you to quickly find what you need, track borrowed tools, and avoid buying duplicates. Designed for practical use in workshops and job sites.

Highlights
  • AI-powered tool identification from photos
  • Searchable inventory
  • Tool check-in/check-out tracking
  • Organize by category, location, or tags
  • Avoid duplicate purchases
  • No account or login required
Features
Read full description

Stop digging through bins and buying tools you already own. Workshop AI turns photos of your garage, workshop, basement, shed, or job-site storage into a searchable tool inventory. Take a photo of a bin, drawer, shelf, or toolbox and AI identifies the tools and supplies for you. FIND THE RIGHT TOOL FOR THE JOB Tell Workshop AI what you're trying to do — “I need to remove some drywall” — and it recommends tools from your inventory and shows exactly where each one is stored. BUILD YOUR INVENTORY FAST • Photograph multiple tools at once • Let AI identify them automatically • Review and edit the results • Assign tools to bins, shelves, drawers, and locations • Browse your inventory by storage location KNOW WHERE EVERYTHING BELONGS Open any bin to see what's supposed to be inside. Find tools faster and avoid buying something you already own. CHECK TOOLS IN & OUT Take a tool from its storage bin and check it out. Workshop remembers its original location so you know exactly where to return it when the job is finished. BUILT FOR REAL WORKSHOPS Workshop AI is made for homeowners, DIYers, makers, tradespeople, and anyone with tools spread across a garage, basement, shed, workshop, or job site. Free to use. No account or login required.

About

Sign Doc

Features
Read full description

Scan documents, create a clean signature and export signed PDFs in minutes with Sign Doc. Sign Doc gives you a simple way to scan, sign, organize and share documents right from your iPhone, with no printing, no rescanning and no account to create. SCAN DOCUMENTS Photograph paper documents with your camera and turn them into clear, professional PDF files. Combine several pages into one document, ready to sign or share. CREATE YOUR SIGNATURE Draw your signature on screen or capture a handwritten signature from paper. Remove the background to create a clean, transparent signature that looks natural on any document. SIGN PDF FILES Place your signature exactly where it belongs. Resize and reposition it on the page, preview the finished document and export a PDF that is ready to share. MADE FOR EVERYDAY DOCUMENTS Use Sign Doc for: • Contracts and agreements • Consent and authorization forms • Rental and business documents • School and personal paperwork • Invoices and other documents that need a signature PRIVACY FIRST Document scanning, PDF creation and signing happen on your device. Your documents and PDF contents are not uploaded to our servers. A SIMPLE DOCUMENT WORKFLOW • Scan one page or several • Create and reuse signatures • Capture signatures from paper • Generate transparent signature images • Position and resize signatures • Build and export PDF documents • Share with the iOS share sheet • No account required From paper to signed PDF, Sign Doc helps you finish important documents quickly and with confidence. Download Sign Doc and sign documents easily, anytime. Privacy Policy: https://sites.google.com/view/sign-doc-privacy-policy/home Terms & Conditions: https://sites.google.com/view/sign-doc-terms-conditions/home

Screenshots

Workshop AI4 screens
Sign Doc4 screens

Verdict

The call

The clearest difference is in-app purchases: Workshop AI at none against Sign Doc's 4. Workshop AI also leads on ads (none vs shown). Sign Doc's advantage is update cadence (every 2 days vs monthly). On price, device support and iOS requirement 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. Sign Doc sells 4 in-app purchases, starting at $5.99 per month. Workshop AI asks for nothing beyond the download.

UpkeepUpdate frequency

Workshop AI ships an update monthly, Sign Doc every 2 days. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
Workshop AI versus Sign Doc: the parameters behind the verdict, then further details
ParameterWorkshop AISign Doc
PriceFreeFree
Rating4.9 (10 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings10 — better—
Update frequencyMonthlyEvery 2 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.0 — better
Further details — not scored
Size44 MB70 MB
Age rating4+4+
DeveloperEdward MorganSiddharth Ghedia

In-app purchases

None

Workshop AI

No in-app purchases

4 purchases

Sign Doc

Subscriptions3
  • Pro Monthly$5.991 Month
  • Pro Annual3 Days trial$29.991 Year
  • Pro Annual Intro1 Year trial$29.991 Year
One-time1
  • Lifetime Pro$59.99

Questions

Is Workshop AI free?
Workshop AI is free to download, with no in-app purchases.
Is Sign Doc free?
Sign Doc is free to download, with in-app purchases available.
Do Workshop AI or Sign Doc have ads?
Sign Doc shows ads; Workshop AI does not.
Which is updated more often, Workshop AI or Sign Doc?
Workshop AI ships an update monthly, and Sign Doc every 2 days. Most recently, Workshop AI was updated on October 24, 2026 and Sign Doc on October 24, 2026.

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