Stamp Maker vs Certify
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
Certify
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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
Verdict
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
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.
Stamp Maker ships an update every 5 days, Certify weekly. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.
| Parameter | Stamp Maker | Certify |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 days — better | Weekly |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone |
| Requires iOS | 16 | 16.0 |
| Further details — not scored | ||
| Size | 61 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Hashim Sultan Abbasi | Jhomar Maravillas |
In-app purchases
Stamp Maker
- Monthly$4.991 Month
- 6-Months7 Days trial$24.996 Months
- Yearly7 Days trial$44.991 Year
- Lifetime Pro$89.99
Certify
- Unlock Unlimited$4.99









