# Stamp Maker vs Certify

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.

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.

## The numbers

| Metric | Stamp Maker | Certify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stamp-maker-pdf-signer/id6761462692/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Ad-supported | — |
| Size | 61 MB | 1 MB |
| Requires iOS | 16 | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hashim Sultan Abbasi](https://appshunter.io/developer/1848195327) | [Jhomar Maravillas](https://appshunter.io/developer/6783703541) |

## What reviewers say

### Stamp Maker

[App page](https://appshunter.io/ios/app/stamp-maker-pdf-signer/id6761462692)

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:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| 6-Months | $24.99 | per 6 months |
| Yearly | $44.99 | per year |
| Lifetime Pro | $89.99 | one-time |


### Certify

[App page](https://appshunter.io/ios/app/certify-certificate-maker/id6792487548)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Unlimited | $4.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*