UniversalQReader vs CardKeep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UniversalQReader
This app reads Digital Seal SQCodes, which are digitally signed and unfalsifiable QR codes used to protect documents. It verifies data signatures, presents them in a mobile-friendly layout, and allows reconstruction and sharing of original documents in PDF format.
- Reads Digital Seal SQCodes
- Verifies digital signatures
- Presents data in mobile layout
- Reconstructs documents to PDF
- Shares documents as PDF
- Supports encrypted data
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Universal QReader™ is a completely free smartphone/tablet App that allows you to read a Digital Seal SQCode®, a Digital Stamp dedicated to protecting documents that are typically used and controlled (even off-line) on the go. The Digital Seal SQCode®, is a QrCode code containing digitally signed data and therefore unfalsifiable. The data structure in the SQCode® Digital Seal is designed specifically for this kind of two-dimensional code and is ready to adapt to different contexts and applications. Data can also be encrypted, when it is necessary to ensure their confidentiality; they are also always signed, with the same philosophy, the same encryption algorithms and the same secure signature equipment used in a qualified signature. This architecture allows -only when it is necessary- the application of a qualified signature in the format CAdES/PAdES: in this case, the certificate of signature must be assigned to a natural person. In more general cases of use, instead, unqualified certificates will be used, typically assigned to a legal entity; this approach allows to define "Digital Seal SQCode®" an Electronic Seal, oriented to what is indicated in Europe's Digital Agenda. The Universal QReader™ App checks the data signature and presents it in a layout suitable for viewing on a mobile device. From the Universal QReader™ App you can then reconstruct the original document in PDF format so you can eventually share it in this form.
CardKeep
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CardKeep allows you to securely storage all of your important cards such as medical cards, membership cards, credit cards and more. All of your data is securely stored in your own personal iCloud storage. You can add cards, delete cards, and view cards. You can also store a note along with each card for additional information. The app allows you to keep a copy of the front and the back of the card and store an expiration date for card that expire like gift cards.
Screenshots
Verdict
The clearest difference is price: UniversalQReader at Free against CardKeep's $2.99. On ads, 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
UniversalQReader is free to download; CardKeep costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | UniversalQReader | CardKeep |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.5 |
| Further details — not scored | ||
| Size | 19 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | GT50 SRL | Jonathan Judelson |
In-app purchases
UniversalQReader
No in-app purchases
CardKeep
No in-app purchases









