# NFC TagWriter by NXP vs ST NFC Sensor

The clearest difference is update cadence: ST NFC Sensor at every 6 weeks against NFC TagWriter by NXP's every 10 months. ST NFC Sensor also leads on iOS requirement (13.0 vs 15.6). NFC TagWriter by NXP's advantage is review sentiment (26% vs 0%) and ratings volume (33 vs 3). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 2.2 for NFC TagWriter by NXP against 2.3 for ST NFC Sensor. That said, the two scores are not equally well evidenced: NFC TagWriter by NXP has 33 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 26% of NFC TagWriter by NXP's written reviews are positive against 0% of ST NFC Sensor's.

NFC TagWriter by NXP ships an update every 10 months, ST NFC Sensor every 6 weeks. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | NFC TagWriter by NXP | ST NFC Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.2 (33 ratings)](https://appshunter.io/ios/app/nfc-tagwriter-by-nxp/id1246143221/reviews) | **[2.3 (3 ratings)](https://appshunter.io/ios/app/st-nfc-sensor/id1377274569/reviews)** |
| Number of ratings | **33** | 3 |
| Positive reviews | **25.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 12 MB | 25 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NXP Semiconductors](https://appshunter.io/developer/383827086) | [STMicroelectronics](https://appshunter.io/developer/1801774735) |

## What reviewers say

### NFC TagWriter by NXP

[App page](https://appshunter.io/ios/app/nfc-tagwriter-by-nxp/id1246143221)

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.

**Highlights:** 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

**In-app purchases:** none


### ST NFC Sensor

[App page](https://appshunter.io/ios/app/st-nfc-sensor/id1377274569)

This application showcases energy harvesting capabilities for NFC tags. It allows users to read sensor data from systems running specific firmware, even without a battery. Explore the potential of battery-free sensor deployment.

**Highlights:** Demonstrates energy harvesting, Reads sensor data, Supports FP-SNS-SMARTAG1 firmware, Works with STEVAL-SMARTAG1 evaluation board, Enables battery-free deployment

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NFC TagWriter by NXP free?

NFC TagWriter by NXP is free to download, with no in-app purchases.

### Is ST NFC Sensor free?

ST NFC Sensor is free to download, with no in-app purchases.

### Which has better reviews, NFC TagWriter by NXP or ST NFC Sensor?

ST NFC Sensor is rated higher. NFC TagWriter by NXP averages 2.2 out of 5 from 33 ratings, while ST NFC Sensor averages 2.3 from 3 ratings.

### Do NFC TagWriter by NXP or ST NFC Sensor have ads?

Neither NFC TagWriter by NXP nor ST NFC Sensor shows ads.

### Which is updated more often, NFC TagWriter by NXP or ST NFC Sensor?

NFC TagWriter by NXP ships an update every 10 months, and ST NFC Sensor every 6 weeks. Most recently, NFC TagWriter by NXP was updated on October 20, 2026 and ST NFC Sensor on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*