U vs NFC TagKit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
U
This application provides secure, two-shake access to areas protected by U-Prox access controllers. It can store multiple keys, allowing for use in various independent locations with an easy-to-use interface.
- Two-shake access
- Stores multiple keys
- Independent facility use
- U-Prox brand style interface
- Easy usability
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U-Prox Mobile ID is used to get two-shake access to the area secured by U-Prox family access controllers. The application stores more than one key - it makes possible to use U-Prox Mobile ID in independent facilities. U-Prox brand style interface makes the application usability as easy as it possible.
NFC TagKit
This app allows you to read and write data to various types of RFID tags. It can display detailed information about transponders and supports creating and writing NDEF records on MIFARE® DESFire® tags.
- Read transponder information (type, manufacturer, serial number)
- Display NDEF record data (URL, text, contact)
- Read data from MIFARE® DESFire® tags
- Write files and NDEF records on MIFARE® DESFire® tags
- Supports various tag types (MIFARE, Ntag, FeliCa, ISO)
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NFCTagKit is an application for working with RFID tags. It provides such functions as reading different kinds of transponders and writing on MIFARE® DESFire® tags. Activating a reading function of the application displays all necessary information about the transponders: • tag type and manufacturer • technologies • serial number • total memory size • filled data volume • etc. Besides that, there is all the information about NDEF records and all the data on the card for such formats as • URL • text message • contact information • etc. One of the key advantages is reading the data from MIFARE® DESFire® transponders, including applications, files, and keys. Activating a writing function of the app grants the possibility to use the demo of the CoreWillSoft GmbH solution. The users can create and write files on the MIFARE® DESFire® tags and make different types of NDEF records. The NFCTagKit App supports such types of tags, as: • MIFARE® DESFire® EV1 • MIFARE® DESFire® EV2 • MIFARE® Ultralight® • MIFARE® Ultralight® C • MIFARE® Ultralight® EV1 • Ntag 213 • Ntag 215 • ISO15693 • FeliCa • ISO7816 (ISO14443-4 type A / B tag with ISO7816 communication protocol) The full functionality of our solution is available for ordering on the CoreWillSoft GmbH website. We are providing the decisions for all kinds of businesses that use RFID technologies and mobile identification.
Screenshots
Verdict
The clearest difference is review sentiment: NFC TagKit at 100% against U's 18%. U's advantage is rating (4.8 vs 4.0) and ratings volume (26 vs 1). On price, ads, in-app purchases and monetization model 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.
U holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: U has 26 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 18% of U's written reviews are positive against 100% of NFC TagKit's, so the app with the better star average is not the one people write more warmly about.
U ships an update every 2 months, NFC TagKit every 4 months. The most recent releases landed on October 21, 2026 and October 7, 2026 respectively.
| Parameter | U | NFC TagKit |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (26 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 18.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 26 — better | 1 |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPod |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 85 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | a2softin | CoreWillSoft GmbH |
Customer experience
U
NFC TagKit
In-app purchases
U
No in-app purchases
NFC TagKit
No in-app purchases









