# VarIoT vs NFC Book

The clearest difference is in-app purchases: VarIoT at none against NFC Book's 1. NFC Book's advantage is update cadence (every 3 days vs every 71 months) and iOS requirement (11.0 vs 18.6). On price and device support there is nothing between them.

Both are free to download. NFC Book sells 1 one-off in-app purchase. VarIoT asks for nothing beyond the download.

VarIoT ships an update every 71 months, NFC Book every 3 days. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | VarIoT | NFC Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/variot/id1463585141/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | Every 71 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 29 MB | 17 MB |
| Requires iOS | 18.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [American Thermal instruments, Inc.](https://appshunter.io/developer/1055795997) | [滙 钟](https://appshunter.io/developer/861882814) |

## What reviewers say

### VarIoT

[App page](https://appshunter.io/ios/app/variot/id1463585141)

This app reads sensor data from a barcode, providing digital information about product details and temperature exposure. It offers customizable pass/fail options to ensure products remain within specified temperature ranges, streamlining quality inspection.

**Highlights:** Readable sensor indicator, Barcode data interpretation, Temperature threshold monitoring, Customizable pass/fail options, Digital record for quality inspection, Compliance with 8009 (01) standard

**In-app purchases:** none


### NFC Book

[App page](https://appshunter.io/ios/app/nfc-book-powered-by-wetrack/id1551346700)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get VIP | $0.99 | one-time |


## Frequently asked questions

### Is VarIoT free?

VarIoT is free to download, with no in-app purchases.

### Is NFC Book free?

NFC Book is free to download, with in-app purchases available.

### Which is updated more often, VarIoT or NFC Book?

VarIoT ships an update every 71 months, and NFC Book every 3 days. Most recently, VarIoT was updated on November 3, 2026 and NFC Book on November 7, 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.*