# NHS3100 Temperature Logger — NTAG SmartSensor

> NTAG SmartSensor (iPhone/iPad app by NXP Semiconductors.)

- Source: https://appshunter.io/ios/app/nhs3100-temperature-logger/id1288590548 (this page in markdown: same URL + `.md`)
- Developer: [NXP Semiconductors](https://appshunter.io/developer/383827086)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 14.0 · 49 MB
- Released: 2017-10-04
- Data updated: 2026-08-16
- User reviews in markdown: https://appshunter.io/ios/app/nhs3100-temperature-logger/id1288590548/reviews.md

## What is NHS3100 Temperature Logger?

This APP demonstrates how an NHS3100 NTAG SmartSensor can be used for temperature monitoring. Besides this iOS APP, one needs to have the NHS3100 starter kit with the demo board. Other supported demonstration boards will become available.

Through the NFC interface of the iPhone, the temperature status can be checked.

The NTAG SmartSensor range of ICs extends NXP's NFC portfolio of passive NFC tags and smart electronic devices. NTAG SmartSensor devices are single-chip solutions combining the now ubiquitous NFC smartphone connectivity with autonomous sensing, data processing and validation, and logging. The NTAG SmartSensor is easy to use in an application by simply adding an NFC antenna and a battery. The devices are also versatile and can be easily combined with other companion chips like radios or sensor solutions.

This APP interacts with the NXP's NHS3100 IC, optimized for temperature monitoring and logging. The temperature sensor offers an absolute accuracy of 0.3C. Each chip comes pre-calibrated and NXP provides a certificate with NIST traceability, easing the use of this IC for medical and pharmaceutical applications.

NXP delivers for the NHS3100 a starter kit which is available for both macOS and Windows. Through this starter kit, developers can implement their own use cases, starting with this basic use case of temperature logging. NXP delivers the example code for both this iPhone APP and the corresponding firmware for the NHS3100.

The starter kit can be ordered via the NXP website and NXP’s distribution partners worldwide. Visit https://www.nxp.com/pages/:NHS31XX_SERIES for more information.


## Version history (last 5 of 5)

### 22 — 2021-10-19

Maintenance release. Small updates and bug fixes.

### 21 — 2021-01-19

Fixed an bug which caused hiccups in the communication with the tag when reading out large amounts of temperature values.
Note that NFC sessions longer than 20 seconds are forcibly terminated by the operating system. For very large amounts (around 20.000 samples and more), two read sessions will need to be initiated.

### 20 — 2020-10-04

This release fixes a few minor bugs.
- Inconsistencies in popup windows have been addressed.
- Improved error handling regarding the NFC interface
- Updated a few external libraries

### 19 — 2020-05-29

This is a major update, making full use of the latest NFC API.
- Addition of a new configuration page, to start a new monitoring session.
- Faster readouts.
- Smaller bug fixes.

### 1.3 — 2018-10-29

- Updated for iOS 12
- Fixed a bug where TEXT records were shown duplicated.

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## More apps by NXP Semiconductors

- [NFC TagWriter by NXP](https://appshunter.io/ios/app/nfc-tagwriter-by-nxp/id1246143221)
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All apps by NXP Semiconductors: https://appshunter.io/developer/383827086

## Related topics

[nhs3100 temperature logger](https://appshunter.io/ios/topics/nhs3100-temperature-logger) · [yoy temperature logger](https://appshunter.io/ios/topics/yoy-temperature-logger)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-16.*