# Thermodynamics Calculators vs Collatz Explorer

The clearest difference is review sentiment: Collatz Explorer at 100% against Thermodynamics Calculators's 0%. Collatz Explorer also leads on in-app purchases (none vs 3) and ratings volume (7 vs 2). Thermodynamics Calculators's advantage is rating (5.0 vs 4.6) and update cadence (weekly vs monthly). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Thermodynamics Calculators sells 3 one-off in-app purchases. Collatz Explorer asks for nothing beyond the download.

Thermodynamics Calculators holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews complicate that: 0% of Thermodynamics Calculators's written reviews are positive against 100% of Collatz Explorer's, so the app with the better star average is not the one people write more warmly about.

Thermodynamics Calculators ships an update weekly, Collatz Explorer monthly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Thermodynamics Calculators | Collatz Explorer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/thermodynamics-calculators/id1483394450/reviews)** | [4.6 (7 ratings)](https://appshunter.io/ios/app/collatz-explorer/id6755121221/reviews) |
| Number of ratings | 2 | **7** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free | Free |
| Size | 6 MB | 1 MB |
| Requires iOS | **16.6** | 18.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Lucy Enterprises](https://appshunter.io/developer/1656612108) | [Berk Sucu](https://appshunter.io/developer/1852063488) |

## What reviewers say

### Thermodynamics Calculators

[App page](https://appshunter.io/ios/app/thermodynamics-calculators/id1483394450)

This app provides engineering professionals with a powerful tool for thermodynamics calculations. It features a comprehensive dataset for various species and a range of building blocks to construct complex models. An illustrative sample model is included for guidance.

**Highlights:** Temperature-dependent property data for 8 species, Building blocks for model creation, Daisy-chaining blocks for complex models, Includes one sample model, Validated against commercial software

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Edit option | $0.99 | one-time |
| Remove ads | $1.99 | one-time |
| Modeling access | $4.99 | one-time |


### Collatz Explorer

[App page](https://appshunter.io/ios/app/collatz-explorer/id6755121221)

Explore mathematical sequences with this app. It calculates the standard Collatz sequence for any number you enter and can also display sequences from an alternative 3x-1 function.

**Highlights:** Calculate Collatz sequences, Calculate 3x-1 function sequences, Input any number, Visualize sequences

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

**In-app purchases:** none


## Frequently asked questions

### Is Thermodynamics Calculators free?

Thermodynamics Calculators is free to download, with in-app purchases available.

### Is Collatz Explorer free?

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

### Which has better reviews, Thermodynamics Calculators or Collatz Explorer?

Thermodynamics Calculators is rated higher. Thermodynamics Calculators averages 5.0 out of 5 from 2 ratings, while Collatz Explorer averages 4.6 from 7 ratings.

### Do Thermodynamics Calculators or Collatz Explorer have ads?

Neither Thermodynamics Calculators nor Collatz Explorer shows ads.

### Which is updated more often, Thermodynamics Calculators or Collatz Explorer?

Thermodynamics Calculators ships an update weekly, and Collatz Explorer monthly. Most recently, Thermodynamics Calculators was updated on November 3, 2026 and Collatz Explorer on October 30, 2026.

---

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