# Storus vs Stamp Maker

The clearest difference is in-app purchases: Storus at none against Stamp Maker's 4. Storus also leads on ads (none vs shown) and iOS requirement (13.4 vs 16). On price, update cadence and device support there is nothing between them.

Both are free to download. Stamp Maker sells 4 in-app purchases, starting at $4.99 per month. Storus asks for nothing beyond the download.

Storus ships an update weekly, Stamp Maker every 5 days. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Storus | Stamp Maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stamp-maker-pdf-signer/id6761462692/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | — | Ad-supported |
| Size | 26 MB | 61 MB |
| Requires iOS | **13.4** | 16 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Alexandr Grigoryev](https://appshunter.io/developer/1579737679) | [Hashim Sultan Abbasi](https://appshunter.io/developer/1848195327) |

## What reviewers say

### Storus

[App page](https://appshunter.io/ios/app/storus/id6446811112)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Storus free?

Storus is free to download, with no in-app purchases.

### Is Stamp Maker free?

Stamp Maker is free to download, with in-app purchases available.

### Do Storus or Stamp Maker have ads?

Stamp Maker shows ads; Storus does not.

### Which is updated more often, Storus or Stamp Maker?

Storus ships an update weekly, and Stamp Maker every 5 days. Most recently, Storus was updated on November 3, 2026 and Stamp Maker on November 8, 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.*