# Probability Distribution vs Thermonator Thermodynamics

The clearest difference is rating: Thermonator Thermodynamics at 5.0 against Probability Distribution's 4.5. Thermonator Thermodynamics also leads on monetization model (freemium vs paid). Probability Distribution's advantage is ratings volume (17 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Probability Distribution sells 1 one-off in-app purchase and Thermonator Thermodynamics sells 6 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Thermonator Thermodynamics holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Probability Distribution has 17 ratings behind it against 1, so its average is the more settled of the two.

Probability Distribution ships an update every 2 weeks, Thermonator Thermodynamics every 3 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Probability Distribution | Thermonator Thermodynamics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (17 ratings)](https://appshunter.io/ios/app/probability-distribution/id6447695305/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/thermonator-thermodynamics/id6749546059/reviews)** |
| Number of ratings | **17** | 1 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Paid | **Freemium** |
| Size | 7 MB | 46 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Madiyar Aitbayev](https://appshunter.io/developer/1229466587) | [Tomas Gomez Martin](https://appshunter.io/developer/1831038451) |

## What reviewers say

### Probability Distribution

[App page](https://appshunter.io/ios/app/probability-distribution/id6447695305)

This app allows users to calculate probabilities and visualize various continuous and discrete probability distributions. It supports a wide range of common distributions and plans to add more in the future.

**Highlights:** Calculate probabilities, Visualize distributions, Normal (Gaussian) distribution, Binomial distribution, Poisson distribution, Exponential distribution

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Distributions | $2.99 | one-time |


### Thermonator Thermodynamics

[App page](https://appshunter.io/ios/app/thermonator-thermodynamics/id6749546059)

This app serves as a comprehensive thermodynamic calculator, assisting with problems from engineering textbooks. It quickly computes steam tables for various substances and offers educational aids like step-by-step calculations and concept reminders.

**Highlights:** Thermodynamic calculations, Steam table computation, Step-by-step solutions, Interactive graphs, Unit conversion, Results sharing

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - 1 week | $2.99 | per 7 days |
| Premium - 1 month | $3.99 | per month |
| Premium - 6 months | $4.99 | per 6 months |
| Premium - 1 month | $5.99 | per month |
| Premium Student - 6 months | $8.99 | per 6 months |
| Premium Pro - 6 months | $9.99 | per 6 months |


## Frequently asked questions

### Is Probability Distribution free?

Probability Distribution is free to download, with in-app purchases available.

### Is Thermonator Thermodynamics free?

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

### Which has better reviews, Probability Distribution or Thermonator Thermodynamics?

Thermonator Thermodynamics is rated higher. Probability Distribution averages 4.5 out of 5 from 17 ratings, while Thermonator Thermodynamics averages 5.0 from 1 ratings.

### Do Probability Distribution or Thermonator Thermodynamics have ads?

Neither Probability Distribution nor Thermonator Thermodynamics shows ads.

### Which is updated more often, Probability Distribution or Thermonator Thermodynamics?

Probability Distribution ships an update every 2 weeks, and Thermonator Thermodynamics every 3 weeks. Most recently, Probability Distribution was updated on November 3, 2026 and Thermonator Thermodynamics on November 5, 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.*