# Quadratic Formula Calculator vs ReUse App

The clearest difference is in-app purchases: ReUse App at none against Quadratic Formula Calculator's 1. ReUse App also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Quadratic Formula Calculator sells 1 one-off in-app purchase. ReUse App asks for nothing beyond the download.

Quadratic Formula Calculator ships an update every 9 months, ReUse App every 5 months. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Quadratic Formula Calculator | ReUse App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (71 ratings)](https://appshunter.io/ios/app/quadratic-formula-calculator/id1425311468/reviews)** | — |
| Number of ratings | **71** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 5 months** |
| Monetization | Free with in-app purchases | — |
| Size | 3 MB | 62 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Edward Prokopik](https://appshunter.io/developer/1077587110) | [Rekall Industries Limited](https://appshunter.io/developer/1896505406) |

## What reviewers say

### Quadratic Formula Calculator

[App page](https://appshunter.io/ios/app/quadratic-formula-calculator/id1425311468)

This app simplifies solving quadratic equations by allowing users to input coefficients a, b, and c. It quickly displays the solutions for x, including support for imaginary numbers. Users can also switch between light and dark themes for a personalized experience.

**Highlights:** Input coefficients a, b, and c, Displays solutions for x, Supports imaginary number solutions, Light and Dark modes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Mode | $1.99 | one-time |


### ReUse App

[App page](https://appshunter.io/ios/app/reuse-app/id6768802584)

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

**In-app purchases:** none


## Frequently asked questions

### Is Quadratic Formula Calculator free?

Quadratic Formula Calculator is free to download, with in-app purchases available.

### Is ReUse App free?

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

### Do Quadratic Formula Calculator or ReUse App have ads?

Quadratic Formula Calculator shows ads; ReUse App does not.

### Which is updated more often, Quadratic Formula Calculator or ReUse App?

Quadratic Formula Calculator ships an update every 9 months, and ReUse App every 5 months. Most recently, Quadratic Formula Calculator was updated on November 6, 2026 and ReUse App on November 5, 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.*