# Thermo Jesus vs Calculus

The clearest difference is review sentiment: Thermo Jesus at 100% against Calculus's 33%. Thermo Jesus also leads on rating (4.0 vs 3.5) and update cadence (every 3 weeks vs every 16 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Thermo Jesus sells 3 in-app purchases, starting at $1.99 per month and Calculus sells 13 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Thermo Jesus holds the better App Store score, 4.0 against 3.5. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 100% of Thermo Jesus's written reviews are positive against 33% of Calculus's.

Thermo Jesus ships an update every 3 weeks, Calculus every 16 months. The most recent releases landed on October 24, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Thermo Jesus | Calculus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/thermo-jesus/id1543111036/reviews)** | [3.5 (4 ratings)](https://appshunter.io/ios/app/calculus-pro/id1638196645/reviews) |
| Number of ratings | 4 | 4 |
| Positive reviews | **100.0% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 16 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 12 MB | 40 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [gitClimbing LLC](https://appshunter.io/developer/1484306358) | [Richard Ssenyonjo](https://appshunter.io/developer/1528776742) |

## What reviewers say

### Thermo Jesus

[App page](https://appshunter.io/ios/app/thermo-jesus/id1543111036)

This app provides comprehensive summaries, practice quizzes, and detailed problem solutions for thermodynamics topics. It includes a water properties calculator and an indexed equation search for easy reference. Access pre-thermo and energy topics immediately.

**Highlights:** 45+ topic summaries, 300+ practice quiz questions, 40+ practice problems/solutions, Water properties calculator, Searchable thermodynamic equations, Immediate access to pre-thermo and energy topics

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Semesterly (6 months) | $7.99 | per 6 months |
| Lifetime Access | $9.99 | one-time |


### Calculus

[App page](https://appshunter.io/ios/app/calculus-pro/id1638196645)

Learn calculus comprehensively through 10 chapters and reinforce your understanding with an interactive quiz game. This app caters to both beginners and advanced learners, offering hints and challenging problems. Enjoy a clear, adaptable interface with font size adjustments and light/dark mode support.

**Highlights:** 10-chapter calculus curriculum, Interactive calculus quiz game, Beginner to advanced learning paths, Adjustable font size, Light and dark mode support, Covers differentiation, integration, and differential equations

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get 1,000 Coins | $0.99 | one-time |
| Get 5,000 Coins | $1.99 | one-time |
| Get 10,000 Coins | $2.99 | one-time |
| Unlock Calculus 1 | $2.99 | one-time |
| Unlock Calculus 2 | $2.99 | one-time |
| Unlock Calculus 3 | $2.99 | one-time |
| Unlock Chapter 5 | $2.99 | one-time |
| Unlock Calculus 8 | $2.99 | one-time |
| Unlock Calculus 9 | $2.99 | one-time |
| Unlock Calculus 4 | $2.99 | one-time |
| Unlock Calculus 6 | $2.99 | one-time |
| Unlock Calculus 7 | $2.99 | one-time |
| Unlock Calculus 10 | $2.99 | one-time |


## Frequently asked questions

### Is Thermo Jesus free?

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

### Is Calculus free?

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

### Which has better reviews, Thermo Jesus or Calculus?

Thermo Jesus is rated higher. Thermo Jesus averages 4.0 out of 5 from 4 ratings, while Calculus averages 3.5 from 4 ratings.

### Do Thermo Jesus or Calculus have ads?

Neither Thermo Jesus nor Calculus shows ads.

### Which is updated more often, Thermo Jesus or Calculus?

Thermo Jesus ships an update every 3 weeks, and Calculus every 16 months. Most recently, Thermo Jesus was updated on October 24, 2026 and Calculus on September 27, 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.*