# Astrodate vs Quadratic Formula Calculator

The clearest difference is price: Quadratic Formula Calculator at Free against Astrodate's $0.99. Quadratic Formula Calculator also leads on rating (4.7 vs 1.0) and ratings volume (71 vs 1). Astrodate's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence and device support there is nothing between them.

Quadratic Formula Calculator is free to download; Astrodate costs $0.99 up front. Quadratic Formula Calculator sells 1 one-off in-app purchase. Astrodate asks for nothing beyond the download.

Quadratic Formula Calculator holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Quadratic Formula Calculator has 71 ratings behind it against 1, so its average is the more settled of the two.

Astrodate ships an update every 12 months, Quadratic Formula Calculator every 9 months. The most recent releases landed on November 6, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Astrodate | Quadratic Formula Calculator |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/astrodate/id308461774/reviews) | **[4.7 (71 ratings)](https://appshunter.io/ios/app/quadratic-formula-calculator/id1425311468/reviews)** |
| Number of ratings | 1 | **71** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 9 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 3 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Flying Titans, Inc.](https://appshunter.io/developer/308461777) | [Edward Prokopik](https://appshunter.io/developer/1077587110) |

## What reviewers say

### Astrodate

[App page](https://appshunter.io/ios/app/astrodate/id308461774)

This app provides the current date and time in multiple specialized formats, including Julian Date, Modified Julian Date, and Truncated Julian Date. It also offers standard Gregorian ISO 8601 formats, eliminating the need for manual calculations. Ideal for astronomers and those requiring precise timekeeping across various systems.

**Highlights:** Julian Date conversion, Modified Julian Date, Truncated Julian Date, Dublin Julian Date, Gregorian ISO 8601 format, Astronomical date calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Astrodate free?

Astrodate costs $0.99, with no in-app purchases.

### Is Quadratic Formula Calculator free?

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

### Which has better reviews, Astrodate or Quadratic Formula Calculator?

Quadratic Formula Calculator is rated higher. Astrodate averages 1.0 out of 5 from 1 ratings, while Quadratic Formula Calculator averages 4.7 from 71 ratings.

### Do Astrodate or Quadratic Formula Calculator have ads?

Quadratic Formula Calculator shows ads; Astrodate does not.

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

Astrodate ships an update every 12 months, and Quadratic Formula Calculator every 9 months. Most recently, Astrodate was updated on November 6, 2026 and Quadratic Formula Calculator on November 11, 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.*