Digital Stamp Decoder vs World Stamps Collecting
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Digital Stamp Decoder
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.
- Reveal hidden stamp images
- Utilizes Scrambled Indicia® technology
- Authenticates USPS postage stamps
- Aids stamp collectors and philatelists
- Showcase stamp collection
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Uncover hidden images in USPS postage stamps with the Digital Stamp Decoder! Originally developed by GSSC in partnership with USPS to protect against counterfeiting, this app brings the innovative Scrambled Indicia® technology to your smartphone. Now, you can reveal the hidden designs in the popular Shuttle Stamp, a must-have for stamp collectors and philatelists. Download the app, showcase your collection, and enjoy a unique, modern twist on stamp authentication. Don't miss out on this innovative collector's tool!
World Stamps Collecting
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.
- Comprehensive world stamp catalog
- Detailed stamp information
- Advanced filtering options
- Catalog search functionality
- Community network for collectors
- Marketplace for buying and selling
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World Stamps app provides a comprehensive catalog of world stamps. Browse and and see details about any stamp, courtesy of colnect.com, a social network for worldwide collectors which has the world's largest online stamp catalog and a huge marketplace to buy and sell your stamps. Filter the stamps using a variety of filter options: Countries, Years, Series, Face Values, Perforations and many others. Use our catalog search to quickly find a specific item. See currently selected filters and remove any by tapping a Reset button. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://colnect.com/en/help/collecting/privacy_policy
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Digital Stamp Decoder | World Stamps Collecting |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (2 ratings) — better | 4.5 (14 ratings) |
| Positive reviews | — | 62.5% of reviews |
| Number of ratings | 2 | 14 — better |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 205 MB | 74 MB |
| Age rating | 4+ | 12+ |
| Developer | Graphic Security Systems Corp. | Amir Wald |
Customer experience
Digital Stamp Decoder
World Stamps Collecting
In-app purchases
Digital Stamp Decoder
No in-app purchases
World Stamps Collecting
- Pro$4.991 Month
- Pro$28.991 Year
Questions
Is Digital Stamp Decoder free?
Is World Stamps Collecting free?
Which has better reviews, Digital Stamp Decoder or World Stamps Collecting?
Do Digital Stamp Decoder or World Stamps Collecting have ads?
Which is updated more often, Digital Stamp Decoder or World Stamps Collecting?
Other comparisons
