# Phymetrix Calculator vs TC

The clearest difference is price: Phymetrix Calculator at Free against TC's $1.99. TC's advantage is update cadence (every 3 months vs every 52 months). On rating, review sentiment, ratings volume and ads there is nothing between them.

Phymetrix Calculator is free to download; TC costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Phymetrix Calculator against 5.0 for TC. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Phymetrix Calculator ships an update every 52 months, TC every 3 months. The most recent releases landed on June 10, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Phymetrix Calculator | TC |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/phymetrix-calculator/id1073762645/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/tc-rtd-reference/id6504454500/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 52 months | **Every 3 months** |
| Monetization | **Free** | Paid |
| Size | 1 MB | 12 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Bedrossian](https://appshunter.io/developer/674267968) | [立娜 王](https://appshunter.io/developer/1761096632) |

## What reviewers say

### Phymetrix Calculator

[App page](https://appshunter.io/ios/app/phymetrix-calculator/id1073762645)

This utility app simplifies moisture calculations by converting between various units and determining dew points and partial water vapor pressures. It's pre-programmed with essential scientific equations for common gases, making complex calculations straightforward.

**Highlights:** Moisture unit conversion, Dew point calculation, Partial water vapor pressure calculation, Pre-programmed scientific equations, Supports common gases, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### TC

[App page](https://appshunter.io/ios/app/tc-rtd-reference/id6504454500)

This utility app provides quick and accurate conversions between resistance, potential, and temperature for various thermocouples and RTDs. It supports offline use, temperature recording with export, and offers an intuitive interface for field technicians and engineers.

**Highlights:** Thermocouple and RTD conversion, Supports multiple sensor types, Offline functionality, Temperature recording and charting, Export data to Excel, Intuitive user interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Phymetrix Calculator free?

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

### Is TC free?

TC costs $1.99, with no in-app purchases.

### Which has better reviews, Phymetrix Calculator or TC?

Phymetrix Calculator and TC are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Phymetrix Calculator or TC have ads?

Neither Phymetrix Calculator nor TC shows ads.

### Which is updated more often, Phymetrix Calculator or TC?

Phymetrix Calculator ships an update every 52 months, and TC every 3 months. Most recently, Phymetrix Calculator was updated on June 10, 2026 and TC on September 15, 2026.

---

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