Comparison

StampDoc vs Stamp Studio

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

Head to head
About

StampDoc

Easily sign PDFs and images, create custom digital stamps, and manage your documents securely from your iPhone or iPad. Streamline your workflow by going fully digital, eliminating the need for printing and scanning.

Highlights
  • Sign PDFs and images
  • Create custom digital stamps
  • Signature editor and scanner
  • Import and reuse stamps
  • Built-in PDF and image viewer
  • Save and share signed files
Features
Read full description

Do you need to sign documents, stamp PDFs, or add signatures to images directly from your iPhone or iPad? With StampDoc, your device becomes your digital signing tool. StampDoc helps you sign PDFs, create professional stamps, and manage your documents securely—all in one place. Forget about printing, scanning, or using complex software. Key Features Sign PDFs and Images: Add digital signatures to PDFs, photos, or images (JPG, PNG) with precision. Ideal for contracts, invoices, agreements, and more. Signature Editor: Create and personalize your signature. Choose thickness, color, and style, then save it for future use. Signature Scanner: Capture your handwritten signature using the camera or import from your gallery to convert it into a digital signature. Digital Stamp Creator: Design stamps—circular, square, or angled—with custom text, colors, and styles. Perfect for professionals who need official marks on their documents. Import and Reuse Stamps: Bring in existing stamps from your gallery or scan them to apply on any file. Built-in PDF and Image Viewer: Open and review your PDFs and images directly within the app. Save and Share: Export signed documents as high-quality PDFs or images, then share them instantly via email, cloud services, or messaging apps. With StampDoc you can Sign PDFs securely and professionally. Create digital signatures and stamps in seconds. Convert handwritten signatures into electronic ones. Manage, save, and share your signed files anytime. Streamline your workflow by going fully digital. Turn your iPhone or iPad into your mobile signing and stamping office. Download StampDoc today and simplify the way you sign and manage your documents. Privacy Policy: https://www.amcompany.net/privacy-policy-am-payroll/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Stamp Studio

Features
Read full description

Stamp Studio is a focused tool for preparing documents on your iPhone or iPad. Import a PDF, add a reusable handwritten signature or custom stamp, and export a finished copy when you are ready to share it. FEATURES • Import PDF documents from Files • Draw and save handwritten signatures • Create reusable business-style stamps and seals • Extract a stamp from a photo or camera image with a transparent background • Move, resize, rotate, and rename signatures and stamps • Place marks on individual PDF pages or create an edge seal across multiple pages • Rename imported files and export a new signed PDF YOUR FILES STAY ON YOUR DEVICE Stamp Studio processes documents, signatures, and stamps locally on your device. Camera and photo-library access are used only when you choose to capture or import an image for stamp extraction. Stamp Studio offers auto-renewable subscriptions. The Terms of Use are governed by the Apple Standard License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

StampDoc4 screens
Stamp Studio3 screens

Verdict

The call

StampDoc and Stamp Studio are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

StampDoc ships an update every 2 months, Stamp Studio monthly. The most recent releases landed on October 4, 2026 and October 12, 2026 respectively.

ScorecardNo meaningful differences
StampDoc versus Stamp Studio: the parameters behind the verdict, then further details
ParameterStampDocStamp Studio
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15 — better16.0
Further details — not scored
Size67 MB4 MB
Age rating4+4+
DeveloperAnyelo MorenoBeijing Yangming Jiuha Technology Co., Ltd

In-app purchases

None

StampDoc

No in-app purchases

None

Stamp Studio

No in-app purchases

Questions

Is StampDoc free?
StampDoc is free to download, with no in-app purchases.
Is Stamp Studio free?
Stamp Studio is free to download, with no in-app purchases.
Do StampDoc or Stamp Studio have ads?
Neither StampDoc nor Stamp Studio shows ads.
Which is updated more often, StampDoc or Stamp Studio?
StampDoc ships an update every 2 months, and Stamp Studio monthly. Most recently, StampDoc was updated on October 4, 2026 and Stamp Studio on October 12, 2026.

Other comparisons