Comparison

Stamp Maker vs Certify

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

Head to head
About

Stamp Maker

Design custom stamps, watermark photos and documents, and sign PDFs with this all-in-one productivity tool. Create professional-looking stamps from scratch or templates, and apply them to images and multi-page documents with precision controls. Works offline and requires no account.

Highlights
  • Custom stamp designer
  • Curved text and typography
  • Photo and PDF watermarking
  • PDF signing and annotation
  • QR code and barcode generation
  • Offline functionality
  • High-quality export
Features
Read full description

Turn your iPhone into a professional stamp studio. Design custom stamps, watermark photos & documents, and sign PDFs — all in one app. Tired of ordering expensive rubber stamps, waiting days for delivery, or juggling multiple apps just to mark up a document? Stamp Maker gives you everything you need to create, customize, and apply professional stamps in minutes — right from your pocket. Whether you're a business owner approving invoices, a notary authenticating documents, a teacher grading papers, or a photographer protecting your work, this is the only tool you'll need. WHAT YOU CAN CREATE: - CUSTOM STAMP DESIGNER - Build stamps from scratch using 13 element types — shapes, text, icons, QR codes, barcodes, and more. Full control over colors, gradients, shadows, glow effects, and blend modes. - CURVED TEXT & TYPOGRAPHY - Add professional curved lettering, choose from hundreds of fonts, adjust kerning, and apply text outlines for that authentic seal look. - ADVANCED DESIGN TOOLS - Snap-to-grid, smart alignment guides, Bezier pen tool, freehand drawing, and boolean shape operations (union, subtract, intersect) for precision designs. - 50+ READY-MADE TEMPLATES - Professionally designed templates across 11 categories — Official, Business, Legal, Education, Personal, Holiday, Security, and more. Every template is fully editable. - PHOTO WATERMARKING - Protect your images with stamp watermarks. Choose from 9 placement positions or tile across the entire photo. Adjust opacity, scale, and rotation in real time. - PDF WATERMARKING - Apply stamps to multi-page PDFs with custom page range selection. Watermark all pages, specific pages, or custom ranges like "1,3,5-8." - PDF SIGNING - Draw freehand signatures, type text signatures, or use your saved stamps. Place multiple signatures per page, resize and reposition freely, and apply across all pages instantly. - PDF EDITING - Annotate documents with text, highlights, shapes, drawings, and stamp overlays. Full page-by-page control with real-time preview. - QR CODES & BARCODES - Generate and embed QR codes or barcodes directly into your stamp designs for document tracking and verification. - PRECISION CONTROLS - 50-step undo/redo, layer management, element locking, rulers, and zoom — everything you need for pixel-perfect results. - HIGH-QUALITY EXPORT - Save stamps as transparent PNGs at up to 600 DPI. Share directly or save watermarked photos and signed PDFs in professional quality. WHY PROFESSIONALS CHOOSE STAMP MAKER PRO: • All-in-one solution — no need to switch between stamp, watermark, and signing apps • Works completely offline — everything processes on your device • Available in 20 languages including Arabic, Urdu, Spanish, French, German, Chinese, Japanese, Korean, Hindi, and Turkish • Intuitive interface designed for both iPhone and iPad • No account required — start creating immediately FROM STAMPS TO SIGNED DOCUMENTS IN MINUTES: 1. Pick a template or start from scratch 2. Customize every detail — colors, effects, text, shapes 3. Save your stamp and apply it anywhere — photos, PDFs, documents 4. Export and share in high resolution Create your first professional stamp in under 5 minutes. Download Stamp Maker now and take control of your documents. Privacy Policy: https://stampmaker.myportfoliodata.com/privacy-policy Terms of Use: https://stampmaker.myportfoliodata.com/terms

About

Certify

Features
Read full description

Need a certificate for a student, an employee, a team or a class in the next five minutes? Certify turns a few details into a classic, print-ready certificate PDF — no design app or template hunting. Choose a template, enter the recipient, the award or course, and who signs it, then create the PDF. Print it, share it or save it to Files. • FOUR TEMPLATES — Award (Certificate of Achievement), Diploma, Completion (Certificate of Completion) and Participation (Certificate of Participation), each with matching wording such as “has successfully completed”. • YOUR OWN HEADING — keep the standard title or type your own, like “Employee of the Month” or “Star Reader”. • THE DETAILS THAT MATTER — recipient name, award or course title, an optional organization name and a date written any way you like. • SIGNATURE LINE — the signer's name and title under a signature line (or “Authorized signature” if you leave the title blank), next to the date. • CLASSIC LOOK — landscape US Letter with a double border, corner ornaments, warm gold accents and a seal emblem, ready for card stock or plain paper. • PRINT, SHARE OR SAVE — one tap to print, share or save the PDF to Files. Good to know: Certify uses a single classic design — there are no custom colors, fonts, logos or photos — and a pasted list of names becomes one PDF with a certificate per name. Sign it by hand after printing. Everything is created on your iPhone — nothing is uploaded and no account is needed. Try it free — 3 certificate exports. A one-time $4.99 purchase unlocks unlimited certificates. No subscription, no ads. Questions: overlapmarr@gmail.com

Screenshots

Stamp Maker4 screens
Certify3 screens

Verdict

The call

The clearest difference is ads: Certify at none against Stamp Maker's shown. Stamp Maker's advantage is device support (4 vs 1). On price, update cadence, in-app purchases 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. Stamp Maker sells 4 in-app purchases, starting at $4.99 per month and Certify sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Stamp Maker ships an update every 5 days, Certify weekly. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 8 level
Stamp Maker versus Certify: the parameters behind the verdict, then further details
ParameterStamp MakerCertify
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 days — betterWeekly
AdsYesNo — better
In-app purchasesYesYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod, Mac — betteriPhone
Requires iOS1616.0
Further details — not scored
Size61 MB1 MB
Age rating4+4+
DeveloperHashim Sultan AbbasiJhomar Maravillas

In-app purchases

4 purchases

Stamp Maker

Subscriptions3
  • Monthly$4.991 Month
  • 6-Months7 Days trial$24.996 Months
  • Yearly7 Days trial$44.991 Year
One-time1
  • Lifetime Pro$89.99
1 purchases

Certify

One-time1
  • Unlock Unlimited$4.99

Questions

Is Stamp Maker free?
Stamp Maker is free to download, with in-app purchases available.
Is Certify free?
Certify is free to download, with in-app purchases available.
Do Stamp Maker or Certify have ads?
Stamp Maker shows ads; Certify does not.
Which is updated more often, Stamp Maker or Certify?
Stamp Maker ships an update every 5 days, and Certify weekly. Most recently, Stamp Maker was updated on October 15, 2026 and Certify on October 13, 2026.

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