# Thermodynamics Calculators vs BrainDeck

The clearest difference is review sentiment: BrainDeck at 70% against Thermodynamics Calculators's 0%. BrainDeck also leads on ratings volume (246 vs 2). Thermodynamics Calculators's advantage is monetization model (free vs free with in-app purchases) and rating (5.0 vs 4.7). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Thermodynamics Calculators sells 3 one-off in-app purchases and BrainDeck sells 6 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Thermodynamics Calculators holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: BrainDeck has 246 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 0% of Thermodynamics Calculators's written reviews are positive against 70% of BrainDeck's, so the app with the better star average is not the one people write more warmly about.

Thermodynamics Calculators ships an update weekly, BrainDeck every 6 days. The most recent releases landed on September 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Thermodynamics Calculators | BrainDeck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/thermodynamics-calculators/id1483394450/reviews)** | [4.7 (246 ratings)](https://appshunter.io/ios/app/braindeck-ai-flashcards/id6476791990/reviews) |
| Number of ratings | 2 | **246** |
| Positive reviews | 0.0% of reviews | **70.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 6 MB | 60 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Lucy Enterprises](https://appshunter.io/developer/1656612108) | [Home Cook Technologies Ltd](https://appshunter.io/developer/1717172351) |

## 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 |


### BrainDeck

[App page](https://appshunter.io/ios/app/braindeck-ai-flashcards/id6476791990)

This AI-powered flashcard app helps students study smarter and remember longer. Create custom flashcards with AI tools, schedule study sessions, and track your progress. Personalize your decks with custom covers to make learning more enjoyable and effective.

**Highlights:** AI-powered flashcard creation, Customizable flashcard decks, Smart study session scheduling, Progress tracking and insights, Personalized deck covers, Study reminders

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BrainDeck Pro Weekly | $1.99 | per 7 days |
| BrainDeck Pro Monthly | $3.99 | per month |
| BrainDeck Pro Yearly | $19.99 | per year |
| BrainDeck Pro Yearly | $24.99 | per year |
| BrainDeck Pro Lifetime | $29.99 | one-time |
| BrainDeck Pro Lifetime | $49.99 | one-time |

**What reviewers like**

- 💡 AI-powered flashcard creation
- 👍 Excellent UI/UX
- 🚀 Efficient flashcard generation
- 👍 Easy to use
- 💡 Spaced repetition tool

**What reviewers complain about**

- 🐛 App flashes and closes
- 🐛 Image display too small
- 🐛 Limited image uploads (max 5)
- 🐛 Buggy and confusing
- 🐛 Functional flaw in file import

**Reported bugs**

- App flashes and closes unexpectedly
- Images and diagrams appear too small
- Cannot add more than 5 images at one time
- Security risk detected
- App lock issues

**Requested features**

- Allow iPad version on Mac
- Improve image/diagram size and visibility
- Add printing option for flashcards
- Reintroduce test-style practice exams
- Allow arrangement of cards during editing (up/down, back first)


## Frequently asked questions

### Is Thermodynamics Calculators free?

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

### Is BrainDeck free?

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

### Which has better reviews, Thermodynamics Calculators or BrainDeck?

Thermodynamics Calculators is rated higher. Thermodynamics Calculators averages 5.0 out of 5 from 2 ratings, while BrainDeck averages 4.7 from 246 ratings.

### Do Thermodynamics Calculators or BrainDeck have ads?

Neither Thermodynamics Calculators nor BrainDeck shows ads.

### Which is updated more often, Thermodynamics Calculators or BrainDeck?

Thermodynamics Calculators ships an update weekly, and BrainDeck every 6 days. Most recently, Thermodynamics Calculators was updated on September 29, 2026 and BrainDeck on October 24, 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.*