# FX Calculus Problem Solver vs Calculus

The clearest difference is in-app purchases: FX Calculus Problem Solver at none against Calculus's 13. FX Calculus Problem Solver also leads on update cadence (every 5 months vs every 16 months) and ratings volume (78 vs 4). On price, rating, ads and monetization model there is nothing between them.

Both are free to download. Calculus sells 13 one-off in-app purchases. FX Calculus Problem Solver asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.4 for FX Calculus Problem Solver against 3.5 for Calculus. That said, the two scores are not equally well evidenced: FX Calculus Problem Solver has 78 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 48% of FX Calculus Problem Solver's written reviews are positive against 33% of Calculus's.

FX Calculus Problem Solver ships an update every 5 months, Calculus every 16 months. The most recent releases landed on September 20, 2026 and July 19, 2026 respectively.

## The numbers

| Metric | FX Calculus Problem Solver | Calculus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (78 ratings)](https://appshunter.io/ios/app/fx-calculus-problem-solver/id833967111/reviews) | **[3.5 (4 ratings)](https://appshunter.io/ios/app/calculus-pro/id1638196645/reviews)** |
| Number of ratings | **78** | 4 |
| Positive reviews | **48.5% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 16 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 35 MB | 40 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Euclidus Inc](https://appshunter.io/developer/490623202) | [Richard Ssenyonjo](https://appshunter.io/developer/1528776742) |

## What reviewers say

### FX Calculus Problem Solver

[App page](https://appshunter.io/ios/app/fx-calculus-problem-solver/id833967111)

Solve calculus homework and textbook problems with this comprehensive math software. It offers animated solution steps, a scientific and graphing calculator, and an intuitive editor for typing in your own problems. Ideal for students preparing for exams.

**Highlights:** Animated step-by-step solutions, Scientific calculator, Graphing calculator, Automatic problem solving, Math problem expression editor, Over 1,000 sample problems

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Excellent for learning calculus
- 👍 Step-by-step solutions provided
- 👍 Helpful for reviewing concepts
- 👍 Good for checking homework answers
- 👍 Can simplify complex problems

**What reviewers complain about**

- 😞 Frequent crashes and freezing
- 😞 Inaccurate answers for some problems
- 😞 "Scam" due to payment issues
- 😞 Premium version stops working after purchase
- 😞 Paid content is essential

**Reported bugs**

- App crashes when launching animated solutions board
- App crashes after solving 2-3 operations
- App freezes when clicking solve button
- App crashes when hitting solve button
- App stops working after paying for premium

**Requested features**

- Add summation functionality
- Add trigonometry functions and equations
- Add camera recognition for problems
- Add curve fitting feature
- Add INC and DEC coordinates on graph


### 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 FX Calculus Problem Solver free?

FX Calculus Problem Solver is free to download, with no in-app purchases.

### Is Calculus free?

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

### Which has better reviews, FX Calculus Problem Solver or Calculus?

Calculus is rated higher. FX Calculus Problem Solver averages 3.4 out of 5 from 78 ratings, while Calculus averages 3.5 from 4 ratings.

### Do FX Calculus Problem Solver or Calculus have ads?

Neither FX Calculus Problem Solver nor Calculus shows ads.

### Which is updated more often, FX Calculus Problem Solver or Calculus?

FX Calculus Problem Solver ships an update every 5 months, and Calculus every 16 months. Most recently, FX Calculus Problem Solver was updated on September 20, 2026 and Calculus on July 19, 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.*