# Quadratic Formula Calculator vs Calculator +ㅤ

The clearest difference is monetization model: Quadratic Formula Calculator at free with in-app purchases against Calculator +ㅤ's subscription. Quadratic Formula Calculator also leads on review sentiment (75% vs 47%). Calculator +ㅤ's advantage is update cadence (fortnightly vs every 9 months) and ratings volume (4.6K vs 71). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Quadratic Formula Calculator sells 1 one-off in-app purchase and Calculator +ㅤ sells 6 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Quadratic Formula Calculator against 4.6 for Calculator +ㅤ. That said, the two scores are not equally well evidenced: Calculator +ㅤ has 4.6K ratings behind it against 71, so its average is the more settled of the two. Written reviews are what separate them: 75% of Quadratic Formula Calculator's written reviews are positive against 47% of Calculator +ㅤ's.

Quadratic Formula Calculator ships an update every 9 months, Calculator +ㅤ fortnightly. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Quadratic Formula Calculator | Calculator +ㅤ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (71 ratings)](https://appshunter.io/ios/app/quadratic-formula-calculator/id1425311468/reviews)** | [4.6 (4.6K ratings)](https://appshunter.io/ios/app/calculator-plus/id1597933199/reviews) |
| Number of ratings | 71 | **4.6K** |
| Positive reviews | **75.0% of reviews** | 46.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 months | **Fortnightly** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 3 MB | 55 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Edward Prokopik](https://appshunter.io/developer/1077587110) | [Rocket Apps GmbH](https://appshunter.io/developer/1566586717) |

## 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

**In-app purchases (1)**

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


### Calculator +ㅤ

[App page](https://appshunter.io/ios/app/calculator-plus/id1597933199)

This app simplifies math with basic, scientific, and fraction calculations. It also features a unique snap-and-scribble function to solve problems from photos. Customize your experience with themes and access a calculation history.

**Highlights:** Snap and Scribble Calculator, Basic Calculator, Scientific Calculator, Fraction Calculator, Currency Converter, Calculation History, Customizable Themes

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rocket Apps PRO Weekly | $2.99 | per 7 days |
| Rocket Apps PRO Monthly | $4.99 | per month |
| Rocket Apps PRO Yearly | $9.99 | per year |
| Rocket Apps PRO Offer | $19.99 | per year |
| Rocket Apps PRO Yearly | $19.99 | per year |
| Rocket Apps PRO Yearly | $29.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Accurate calculations
- 🎨 Excellent visuals
- 💡 Helpful for academic work

**What reviewers complain about**

- 💰 Subscription model too expensive
- 🔍 Decimal entry quirks
- 📺 Too many ads
- 🔒 Locked features behind paywall

**Reported bugs**

- Inaccurate square root calculations
- Compatibility issues on iPad
- Decimal point not recognized

**Requested features**

- Negative number support
- Improved fraction calculator
- Scientific calculator layout
- Option to disable history feature


## Frequently asked questions

### Is Quadratic Formula Calculator free?

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

### Is Calculator +ㅤ free?

Calculator +ㅤ is free to download, with in-app purchases available.

### Which has better reviews, Quadratic Formula Calculator or Calculator +ㅤ?

Quadratic Formula Calculator is rated higher. Quadratic Formula Calculator averages 4.7 out of 5 from 71 ratings, while Calculator +ㅤ averages 4.6 from 4.6K ratings.

### Do Quadratic Formula Calculator or Calculator +ㅤ have ads?

Both Quadratic Formula Calculator and Calculator +ㅤ show ads.

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

Quadratic Formula Calculator ships an update every 9 months, and Calculator +ㅤ fortnightly. Most recently, Quadratic Formula Calculator was updated on October 24, 2026 and Calculator +ㅤ on October 27, 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.*