SerialMagic Keys vs NFC TagWriter by NXP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SerialMagic Keys
This app enables wireless RFID GEN2 UHF, NFC, and barcode readers, along with other devices, to send data directly into iOS applications. It supports a wide range of Bluetooth scanners and sensors, making it ideal for inventory, asset tracking, and data collection tasks.
- Connects wireless RFID GEN2 UHF, NFC, and barcode readers
- Integrates with sensors, scales, and other wireless devices
- Sends data directly into iOS apps
- Supports a wide range of Bluetooth scanner models
- Enables data input for inventory, asset tracking, and more
- Reads and writes NDEF data
- Simulates keyboard input for data posting
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SerialMagic Keys provides a simple yet powerful way to connect wireless RFID GEN2 UHF, NFC & barcode readers, meters, sensors, scales, and other wireless devices to easily get data into iOS apps. Why not just use Bluetooth HID (keyboard mode) devices? Many Bluetooth devices are not supported on iOS, and when they are apps must be updated to work. For example use BLE and MFi devices like idChamp® RFID & NFC readers like NF4, RS4, RS3, 1862, 1128, Allflex RS420, LPR, GPR+ Livestock & readers and countless other models with ALL iOS apps that take typed input, e.g. FileMaker Go. RFID-NFC and barcode enable web apps and native apps for inventory, cycle counting, asset tracking, book scouting, package tracking, medical apps - all apps can be RFID, NFC, Barcode, Sensor enabled with SerialMagic Keys. Supports more Bluetooth scanner models than any product of its kind. Scanfob®, idChamp®, BlueSnap caBLE(tm) Bluetooth to RS232 (BLE) dongles. Bluetooth CaBLE can iOS enable virtually any RS-232 device to iOS. Scanfob® 3002i 2D barcode scanner, Scanfob® 2006 laser barcode scanner, Koamtac KDC Scanners, Socket CHS Scanners, 8Qi, Honeywell, Symbol, and hundreds more. Also works with Bluetooth UHF GEN2 RFID readers like Scanfob® Ultra-BB2, Scanfob® Qid, idChamp EUB 4-port, EUA 1-port embedded Gen2 UHF RFID readers CipherLab 1862, TSL 1128 and NFC readers like Scanfob® NFC-BB2. Read & write NDEF data using idChamp® NF4 & RS4. Keyboard simulation can post NDEF data to any app that can accept keystrokes. Read HID Corporate 1000 cards, iClass, Seos, PROX, HID Mobile Access BLE credentials, Apple Student ID, and more using idChamp NF4, and RS4 for high security applications. Write UHF GEN2 EPC and user memory tags with Scanfob® Ultra-BB2, idChamp 1862, idChamp 1128, and more. Measure distance with Leica Disto E7100i, E7500i, etc. and post Keyboard simulation post measurements to all apps that accepts keystrokes. Use measurement rounding feature for simplified use e.g. round to nearest fraction of foot, meter, inch. Post PosiTector 6000 probe coating thickness measurements to any iOS app. Note when using app with non-genuine scanner, registration code may be needed.
NFC TagWriter by NXP
This application allows you to write various types of data, including contacts, bookmarks, and SMS messages, to any NFC-enabled tag. Once programmed, you can read the stored information and even launch applications automatically based on the data. It works with posters, business cards, and other NFC-enabled items.
- Store contacts, bookmarks, geo locations
- Program SMS, Bluetooth, and Mail data
- Write to NFC-enabled tags and items
- Read and view programmed data
- Launch applications automatically
- Works with posters and business cards
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The NFC TagWriter by NXP Semiconductors, stores Contacts, Bookmarks, Geo location, Bluetooth, Handover, SMS, Mail and many more to any NFC enabled tags as well as to items like posters, business cards and many more containing NFC-enabled electronics. Once data has been stored the application allows reading and viewing the programmed data including options to launch applications automatically based on the contained data.
Screenshots
Verdict
The clearest difference is review sentiment: SerialMagic Keys at 83% against NFC TagWriter by NXP's 26%. SerialMagic Keys also leads on update cadence (monthly vs every 10 months). NFC TagWriter by NXP's advantage is in-app purchases (none vs 9). On price, ads, monetization model and device support 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. SerialMagic Keys sells 9 one-off in-app purchases. NFC TagWriter by NXP asks for nothing beyond the download.
SerialMagic Keys ships an update monthly, NFC TagWriter by NXP every 10 months. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.
| Parameter | SerialMagic Keys | NFC TagWriter by NXP |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.2 (33 ratings) — better |
| Positive reviews | 83.3% of reviews — better | 25.8% of reviews |
| Number of ratings | — | 33 — better |
| Update frequency | Monthly — better | Every 10 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 12 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Serialio Ltd. | NXP Semiconductors |
Customer experience
SerialMagic Keys
NFC TagWriter by NXP
In-app purchases
SerialMagic Keys
- Enable RFID-NFC User Data Reading & Writing$19.99
- Built-in NFC reading$19.99
- Allow Special Key(s)$19.99
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- Enable Data Handling$24.99
- More supported scanners$29.99
- Laser Measurer support$49.99
- S3 Scale Head support$79.99
- PosiTector 6000 support$89.99
- Advanced Posting Mode$99.99
NFC TagWriter by NXP
No in-app purchases
Questions
Is SerialMagic Keys free?
Is NFC TagWriter by NXP free?
Do SerialMagic Keys or NFC TagWriter by NXP have ads?
Which is updated more often, SerialMagic Keys or NFC TagWriter by NXP?
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