REGA Decoder vs Stamp 4.1
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
REGA Decoder
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For testing and programming REGA decoders even when installed.
Stamp 4.1
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Since 2021, Philately Liechtenstein has been issuing postage stamps with blockchain technology from the Principality of Liechtenstein. These stamps are forgery-proof, interactive and exciting. Deposit your postage stamp in this app and find out which collectible is hidden behind your stamp. Each stamp contains a digital puzzle piece that only becomes visible after scanning it in the app. But that's not everything by any means. You can also solve puzzles, improve your best time and and compete with other users worldwide. Stay active and collect points to constantly improve your ranking. Our "Fantastic Animal World" small-sheet series can also be deposited in the app and will welcome you in their own language - so sound on! You have all stamps and want more? Find our Easter eggs (QR codes) and scan them to discover more about the world of stamps. Have you already searched on our website? The valid postage stamps can be used for mailing just like any other stamp. On our "Stamp 4.0" and “Stamp 4.1” an SQR-code is also integrated. When the SQR-code is scanned with the matching app, the stamp becomes visible as a digital twin in the app and can be placed in your digital collection. This gives your stamp a digital CV. These innovations make the Stamp 4.1 forgery-proof, interactive and exciting.
Screenshots
Verdict
The clearest difference is ads: REGA Decoder at none against Stamp 4.1's shown. Stamp 4.1's advantage is update cadence (every 3 weeks vs every 12 months). On price, in-app purchases, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
REGA Decoder ships an update every 12 months, Stamp 4.1 every 3 weeks. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.
| Parameter | REGA Decoder | Stamp 4.1 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 12 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Flik Irrigation Office UG (haftungsbeschraenkt) | Liechtensteinische Post AG |
In-app purchases
REGA Decoder
No in-app purchases
Stamp 4.1
No in-app purchases
