# iCalculator vs NFC Temp Tracker

The clearest difference is price: NFC Temp Tracker at Free against iCalculator's $1.99. NFC Temp Tracker also leads on in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement there is nothing between them.

NFC Temp Tracker is free to download; iCalculator costs $1.99 up front. iCalculator sells 1 in-app purchase, starting at $0.49 per month. NFC Temp Tracker asks for nothing beyond the download.

iCalculator ships an update every 9 days, NFC Temp Tracker fortnightly. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | iCalculator | NFC Temp Tracker |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/icalculator-keyboard-calc/id1176527512/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 76.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 2 MB |
| Requires iOS | **13.0** | 14.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nan Chao](https://appshunter.io/developer/965680403) | [Securitag Assembly Group Co., Ltd](https://appshunter.io/developer/1522265054) |

## What reviewers say

### iCalculator

[App page](https://appshunter.io/ios/app/icalculator-keyboard-calc/id1176527512)

This app offers a powerful and intuitive calculator experience, featuring both basic and scientific functions. It calculates results instantly as you type and allows for easy editing and history management. Customize your experience with themes and integrate it seamlessly as a keyboard or Today Widget.

**Highlights:** Instant calculation without '=' button, Basic & Scientific Calculator, Fraction & Expression Calculator, History List with iCloud sync, Customizable themes, Keyboard extension for any app, Today Widget support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.49 | per month |


### NFC Temp Tracker

[App page](https://appshunter.io/ios/app/nfc-temp-tracker/id1568969683)

**In-app purchases:** none


## Frequently asked questions

### Is iCalculator free?

iCalculator costs $1.99, and also offers in-app purchases.

### Is NFC Temp Tracker free?

NFC Temp Tracker is free to download, with no in-app purchases.

### Do iCalculator or NFC Temp Tracker have ads?

Neither iCalculator nor NFC Temp Tracker shows ads.

### Which is updated more often, iCalculator or NFC Temp Tracker?

iCalculator ships an update every 9 days, and NFC Temp Tracker fortnightly. Most recently, iCalculator was updated on October 24, 2026 and NFC Temp Tracker on October 3, 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.*