# Digital Stamp Decoder vs World Stamps Collecting

The clearest difference is price: World Stamps Collecting at Free against Digital Stamp Decoder's $2.99. World Stamps Collecting also leads on update cadence (every 2 months vs every 5 months) and ratings volume (14 vs 2). Digital Stamp Decoder's advantage is rating (5.0 vs 4.5) and in-app purchases (none vs 2). On device support and iOS requirement there is nothing between them.

World Stamps Collecting is free to download; Digital Stamp Decoder costs $2.99 up front. World Stamps Collecting sells 2 in-app purchases, starting at $4.99 per month. Digital Stamp Decoder asks for nothing beyond the download.

Digital Stamp Decoder holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: World Stamps Collecting has 14 ratings behind it against 2, so its average is the more settled of the two.

Digital Stamp Decoder ships an update every 5 months, World Stamps Collecting every 2 months. The most recent releases landed on June 1, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Digital Stamp Decoder | World Stamps Collecting |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/digital-stamp-decoder/id1671241165/reviews)** | [4.5 (14 ratings)](https://appshunter.io/ios/app/world-stamps-collecting/id6443606220/reviews) |
| Number of ratings | 2 | **14** |
| Positive reviews | — | 62.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 205 MB | 74 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Graphic Security Systems Corp.](https://appshunter.io/developer/1176688211) | [Amir Wald](https://appshunter.io/developer/1654387621) |

## What reviewers say

### Digital Stamp Decoder

[App page](https://appshunter.io/ios/app/digital-stamp-decoder/id1671241165)

Reveal hidden images on USPS postage stamps using advanced Scrambled Indicia® technology. Originally designed for anti-counterfeiting, this app offers stamp collectors a unique way to authenticate and appreciate their collection. Explore the innovative world of philately with this modern collector's tool.

**Highlights:** Reveal hidden stamp images, Utilizes Scrambled Indicia® technology, Authenticates USPS postage stamps, Aids stamp collectors and philatelists, Showcase stamp collection

**In-app purchases:** none


### World Stamps Collecting

[App page](https://appshunter.io/ios/app/world-stamps-collecting/id6443606220)

Explore a vast catalog of world stamps with detailed information. Filter by country, year, and more to find specific items. Connect with a community of collectors and access a marketplace to buy and sell stamps.

**Highlights:** Comprehensive world stamp catalog, Detailed stamp information, Advanced filtering options, Catalog search functionality, Community network for collectors, Marketplace for buying and selling

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | per month |
| Pro | $28.99 | per year |


## Frequently asked questions

### Is Digital Stamp Decoder free?

Digital Stamp Decoder costs $2.99, with no in-app purchases.

### Is World Stamps Collecting free?

World Stamps Collecting is free to download, with in-app purchases available.

### Which has better reviews, Digital Stamp Decoder or World Stamps Collecting?

Digital Stamp Decoder is rated higher. Digital Stamp Decoder averages 5.0 out of 5 from 2 ratings, while World Stamps Collecting averages 4.5 from 14 ratings.

### Do Digital Stamp Decoder or World Stamps Collecting have ads?

World Stamps Collecting shows ads; Digital Stamp Decoder does not.

### Which is updated more often, Digital Stamp Decoder or World Stamps Collecting?

Digital Stamp Decoder ships an update every 5 months, and World Stamps Collecting every 2 months. Most recently, Digital Stamp Decoder was updated on June 1, 2026 and World Stamps Collecting on September 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.*