# functionCalculator vs Equation Solver & Simplifier

The clearest difference is in-app purchases: functionCalculator at none against Equation Solver & Simplifier's 8. functionCalculator also leads on iOS requirement (10.3 vs 15.0). Equation Solver & Simplifier's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 11 months). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Equation Solver & Simplifier sells 8 one-off in-app purchases. functionCalculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.3 for functionCalculator against 4.4 for Equation Solver & Simplifier. Both are backed by a comparable volume of ratings — 6 and 10 respectively.

functionCalculator ships an update every 11 months, Equation Solver & Simplifier every 3 weeks. The most recent releases landed on June 1, 2026 and August 26, 2026 respectively.

## The numbers

| Metric | functionCalculator | Equation Solver & Simplifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/functioncalculator/id1275985289/reviews) | **[4.4 (10 ratings)](https://appshunter.io/ios/app/equation-solver-and-simplifier/id1500087226/reviews)** |
| Number of ratings | 6 | **10** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 6 MB | 182 MB |
| Requires iOS | **10.3** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jirou Fukuda](https://appshunter.io/developer/689603483) | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) |

## What reviewers say

### functionCalculator

[App page](https://appshunter.io/ios/app/functioncalculator/id1275985289)

This app calculates the value of mathematical functions y = f(x) for various types of numbers, including irrational ones. It displays results as exact fractions with square roots and can convert them to decimals. The app also supports calculations involving two different input values, alpha and beta.

**Highlights:** Calculate function values for any number type, Display results as exact fractions, Convert results to decimal, Perform operations on two input values, Supports irrational numbers

**Features:** macOS Compatibility

**In-app purchases:** none


### Equation Solver & Simplifier

[App page](https://appshunter.io/ios/app/equation-solver-and-simplifier/id1500087226)

This app helps you solve algebraic equations by showing every step of the simplification process. It can find the value of 'x' or the zeros of a function using a numeric algorithm after simplifying your input.

**Highlights:** Algebraic equation solving, Step-by-step simplification, Numeric algorithm for solutions, History function, Decimal input support, Constants and variables support

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| +30 User Tokens | $0.29 | one-time |
| +1 Convenience Token / 6h, max. +2 | $0.59 | one-time |
| +2 Convenience Tokens / 6h, max. +4 | $0.99 | one-time |
| +150 User Tokens | $0.99 | one-time |
| +300 User Tokens | $1.49 | one-time |
| +4 Convenience Tokens / 6h, max. +8 | $1.59 | one-time |
| Remove Ads | $1.99 | one-time |
| Lifetime Access | $1.99 | one-time |


## Frequently asked questions

### Is functionCalculator free?

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

### Is Equation Solver & Simplifier free?

Equation Solver & Simplifier is free to download, with in-app purchases available.

### Which has better reviews, functionCalculator or Equation Solver & Simplifier?

Equation Solver & Simplifier is rated higher. functionCalculator averages 4.3 out of 5 from 6 ratings, while Equation Solver & Simplifier averages 4.4 from 10 ratings.

### Do functionCalculator or Equation Solver & Simplifier have ads?

functionCalculator shows ads; Equation Solver & Simplifier does not.

### Which is updated more often, functionCalculator or Equation Solver & Simplifier?

functionCalculator ships an update every 11 months, and Equation Solver & Simplifier every 3 weeks. Most recently, functionCalculator was updated on June 1, 2026 and Equation Solver & Simplifier on August 26, 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.*