# Thermo Physical Prop vs 2nd Grade Math Challenge

The clearest difference is price: 2nd Grade Math Challenge at Free against Thermo Physical Prop's $4.99. 2nd Grade Math Challenge also leads on rating (4.9 vs 1.0) and ratings volume (16 vs 1). Thermo Physical Prop's advantage is in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement there is nothing between them.

2nd Grade Math Challenge is free to download; Thermo Physical Prop costs $4.99 up front. 2nd Grade Math Challenge sells 1 one-off in-app purchase. Thermo Physical Prop asks for nothing beyond the download.

2nd Grade Math Challenge holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: 2nd Grade Math Challenge has 16 ratings behind it against 1, so its average is the more settled of the two.

Thermo Physical Prop ships an update every 8 months, 2nd Grade Math Challenge every 5 months. The most recent releases landed on October 16, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Thermo Physical Prop | 2nd Grade Math Challenge |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/thermo-physical-prop/id460148819/reviews) | **[4.9 (16 ratings)](https://appshunter.io/ios/app/2nd-grade-math-challenge/id1567478828/reviews)** |
| Number of ratings | 1 | **16** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 months** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 36 MB |
| Requires iOS | 14.3 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kaup Shenoy Associates](https://appshunter.io/developer/460148822) | [IT365 Solutions Inc](https://appshunter.io/developer/1531416759) |

## What reviewers say

### Thermo Physical Prop

[App page](https://appshunter.io/ios/app/thermo-physical-prop/id460148819)

Access essential thermo-physical property data for seventeen common industrial fluids. This app provides quick reference for engineers and students in thermodynamics, fluid mechanics, and heat transfer, aiding in flow system design computations.

**Highlights:** Data for 17 common industrial fluids, SI and USCS unit options, Transport properties (density, viscosity, etc.), Gas properties (molecular weight, specific heat ratio, etc.), Steam table with saturated and superheat conditions, Humid air properties (humidity ratio, dew point, etc.)

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

**In-app purchases:** none


### 2nd Grade Math Challenge

[App page](https://appshunter.io/ios/app/2nd-grade-math-challenge/id1567478828)

Test your 2nd-grade math skills with 100 engaging questions and puzzles. Track your progress, share your score with a personalized certificate, and challenge friends and family to friendly competitions. Step-by-step solutions are available for better understanding.

**Highlights:** 100 math questions and levels, Includes math puzzles, Create and share score certificates, Challenge friends and family, Step-by-step solution guides

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all Ads from Math 2 | $0.99 | one-time |


## Frequently asked questions

### Is Thermo Physical Prop free?

Thermo Physical Prop costs $4.99, with no in-app purchases.

### Is 2nd Grade Math Challenge free?

2nd Grade Math Challenge is free to download, with in-app purchases available.

### Which has better reviews, Thermo Physical Prop or 2nd Grade Math Challenge?

2nd Grade Math Challenge is rated higher. Thermo Physical Prop averages 1.0 out of 5 from 1 ratings, while 2nd Grade Math Challenge averages 4.9 from 16 ratings.

### Do Thermo Physical Prop or 2nd Grade Math Challenge have ads?

Neither Thermo Physical Prop nor 2nd Grade Math Challenge shows ads.

### Which is updated more often, Thermo Physical Prop or 2nd Grade Math Challenge?

Thermo Physical Prop ships an update every 8 months, and 2nd Grade Math Challenge every 5 months. Most recently, Thermo Physical Prop was updated on October 16, 2026 and 2nd Grade Math Challenge on October 21, 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.*