# Quadratic Formula PQ PRO — Zero of a function calculator

> Calculator for finding function zeros using the pq formula. (iPhone/iPad app by Glindemann, Sennoun, Langer GbR.)

- Source: https://appshunter.io/ios/app/quadratic-formula-pq-pro/id1299086984 (this page in markdown: same URL + `.md`)
- Developer: [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809)
- Category: Education, Utilities
- Price: $1.99
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 15.0 · 179 MB
- Languages: American English, French (France), German (Germany), Hindi, Indonesian, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China) and 1 more
- Released: 2017-11-15
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/quadratic-formula-pq-pro/id1299086984/reviews.md

## What is Quadratic Formula PQ PRO?

This app uses the pq formula for finding the zeros of a function quickly and easily. For this, only the values for pq must be entered. All calculations are stored in the history. The final solution can be shared.

[ Content ]
- the values for p and q must be entered
- calculation of the zeros of a function with the pq formula
- history function that saves input
- complete solution
- the entering of fractions is supported
- no ads!

[ Usage ]
- there are 2 fields for entering the values ​​using a modified keyboard
- if you have not entered enough values, the text fields are highlighted in yellow
- if you have entered invalid values, the corresponding text field is highlighted in red
- you can switch between the solution, input view and history by swiping and / or touching the buttons
- the entries in the history can be deleted or sorted manually
- if you select an entry in the history, it will be loaded automatically for the calculation
- the entire history can be deleted by pressing a key

## Key features

- PQ formula calculation
- Input p and q values
- History of calculations
- Shareable solutions
- Fraction input support
- Input validation highlighting


## Frequently asked questions about Quadratic Formula PQ PRO

### What is the Quadratic Formula PQ PRO app?

Quadratic Formula PQ PRO is a paid application designed to quickly find the zeros of a function using the pq formula. It allows users to input p and q values and displays the complete solution.

### How does Quadratic Formula PQ PRO calculate function zeros?

The app uses the pq formula for calculation. Users simply need to enter the values for p and q, and the app performs the calculation automatically.

### Does Quadratic Formula PQ PRO support fractions?

Yes, the app supports the entering of fractions for p and q values, making it versatile for various mathematical problems.

### Can I save my calculations in Quadratic Formula PQ PRO?

Yes, all calculations are stored in a history function. You can view, delete, or sort entries in the history, and select past entries to load them for new calculations.

### How much does Quadratic Formula PQ PRO cost?

Quadratic Formula PQ PRO is a paid app, priced at $1.99. It does not feature in-app purchases or advertisements.

### Does Quadratic Formula PQ PRO have ads?

No, Quadratic Formula PQ PRO is ad-free. Users can enjoy a seamless experience without any advertisements interrupting their calculations.

### What devices is Quadratic Formula PQ PRO available on?

Quadratic Formula PQ PRO is available for iPhone, iPad, and iPod devices.

### How often is Quadratic Formula PQ PRO updated?

The app was last updated on May 1, 2026, indicating ongoing support and potential for future improvements. Its initial release was on November 15, 2017.

## Version history (last 5 releases)

### 2.3.3 — 2026-08-14

The latest release 'Least common multiple' is linked in the menu section now.

Minor performance and UI fixes.

### 2.3.2 — 2026-08-04

- the status bar on top is integrated into the current app design
- the app flow was improved (pop-up information was balanced)

### 2.3.1 — 2026-07-17

Maintenance update. Improving performance.

### 2.3.0 — 2026-06-19

Bringing all apps to the same security standard. Critical storage behaviour for solutions has been fixed.

By the way - I run many apps with different math topics. If you like this one: Check them out as well!

I always do my best to keep a high standard on my apps. If something does not meet the expectations, do not hesitate to contact me.

### 2.2.7 — 2026-06-06

There were some major fixes and adjustments for a more stable behaviour of the solution storage and loading. Therefore some database changes were made in the background. There are no performance losses and the functionality does not change. The background tasks are only done once within milliseconds. Following behaviour may occur (only temporary):
- stored calculations have to be tapped twice to load fully
- the order of the stored solutions may change

If there are some losses of solutions do not hesitate to contact me and tell me the number of lost solutions + affected app. I will find a solution for this.

Kind regards, Alex (the Dev)

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All apps by Glindemann, Sennoun, Langer GbR: https://appshunter.io/developer/1024972809

## Related topics

[quadratec](https://appshunter.io/ios/topics/quadratec)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*