# FX Calculus Problem Solver vs Derivative Calculator

The clearest difference is review sentiment: FX Calculus Problem Solver at 48% against Derivative Calculator's 0%. FX Calculus Problem Solver also leads on update cadence (every 5 months vs every 11 months). Derivative Calculator's advantage is monetization model (free vs free with in-app purchases). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

FX Calculus Problem Solver ships an update every 5 months, Derivative Calculator every 11 months. The most recent releases landed on September 20, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | FX Calculus Problem Solver | Derivative Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (78 ratings)](https://appshunter.io/ios/app/fx-calculus-problem-solver/id833967111/reviews)** | — |
| Number of ratings | **78** | — |
| Positive reviews | **48.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 11 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 35 MB | 29 MB |
| Requires iOS | 11.0 | **10.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Euclidus Inc](https://appshunter.io/developer/490623202) | [Ahmad Sattar](https://appshunter.io/developer/1458483953) |

## 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


### Derivative Calculator

[App page](https://appshunter.io/ios/app/derivative-calculator/id1601152374)

This application helps users evaluate functions through differentiation, offering step-by-step solutions and plots for solved functions. It's designed for students, teachers, and anyone interested in learning calculus concepts.

**Highlights:** Multiple differentiation (up to fifth derivative), Step-by-step solution explanations, Example functions for guidance, Plots for solved functions, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FX Calculus Problem Solver free?

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

### Is Derivative Calculator free?

Derivative Calculator is free to download, with no in-app purchases.

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

Neither FX Calculus Problem Solver nor Derivative Calculator shows ads.

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

FX Calculus Problem Solver ships an update every 5 months, and Derivative Calculator every 11 months. Most recently, FX Calculus Problem Solver was updated on September 20, 2026 and Derivative Calculator on June 1, 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.*