# Fraction Calculator Plus #1 vs Acid Interval

The clearest difference is ads: Acid Interval at none against Fraction Calculator Plus #1's shown. Fraction Calculator Plus #1's advantage is ratings volume (22K vs 1) and device support (3 vs 1). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Fraction Calculator Plus #1 sells 9 in-app purchases, starting at $1.39 per month and Acid Interval sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Fraction Calculator Plus #1 against 5.0 for Acid Interval. That said, the two scores are not equally well evidenced: Fraction Calculator Plus #1 has 22K ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Fraction Calculator Plus #1 | Acid Interval |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (22K ratings)](https://appshunter.io/ios/app/fraction-calculator-plus-1/id580778301/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/acid-interval-focus-timer/id6815378728/reviews)** |
| Number of ratings | **22K** | 1 |
| Positive reviews | 94.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | — |
| Monetization | Free with in-app purchases | Freemium |
| Size | 148 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DigitAlchemy LLC](https://appshunter.io/developer/376971628) | [Preston Carr](https://appshunter.io/developer/6815378730) |

## What reviewers say

### Fraction Calculator Plus #1

[App page](https://appshunter.io/ios/app/fraction-calculator-plus-1/id580778301)

Easily perform fraction calculations including addition, subtraction, multiplication, and division. Convert fractions to decimals and vice versa with a clear, user-friendly interface. Ideal for students, cooks, and DIYers needing quick and accurate fraction management.

**Highlights:** Add, subtract, multiply, and divide fractions, Convert fractions to decimals, Automatically simplifies fractions, Large display and buttons for easy use, Triple keyboard display for quick input, Displays results as decimals

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fraction Calculator | $1.39 | per month |
| Fraction Calculator | $1.99 | per month |
| Photo Calculator for Fractions | $1.99 | per 7 days |
| Fraction Calculator by Photo | $3.99 | per month |
| Calculator with Fractions | $8.39 | per year |
| Calculator with Fractions | $11.99 | per year |
| Remove ads | $3.99 | one-time |
| Fraction Calculator | $17.49 | one-time |
| Fraction Calculator | $24.99 | one-time |

**What reviewers like**

- 👍 Simple, easy to use
- 👍 Super app
- 👍 Awesome calculator
- 👍 Intuitive design
- 👍 Easy to use and does everything needed

**What reviewers complain about**

- 🐛 Intrusive ads
- 🐛 Subscription required for pro features

**Reported bugs**

- Pro version forgets subscription status
- Occasional crashes

**Requested features**

- Decimal conversion and support
- Rounding options
- Triangle math functionality


### Acid Interval

[App page](https://appshunter.io/ios/app/acid-interval-focus-timer/id6815378728)

This focus timer offers a visually unique approach to deep work, moving away from traditional interfaces. It provides customizable timers and engaging visual feedback to help users stay on task, even with the screen off. The app prioritizes a distraction-free experience with no account or data syncing required.

**Highlights:** Unique visual interface, Customizable timer intervals, Engaging animation mechanisms, Screen-off notifications, No account or data sync, Phone lock compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Acid Interval Pro | $2.99 | one-time |


## Frequently asked questions

### Is Fraction Calculator Plus #1 free?

Fraction Calculator Plus #1 is free to download, with in-app purchases available.

### Is Acid Interval free?

Acid Interval is free to download, with in-app purchases available.

### Which has better reviews, Fraction Calculator Plus #1 or Acid Interval?

Acid Interval is rated higher. Fraction Calculator Plus #1 averages 4.9 out of 5 from 22K ratings, while Acid Interval averages 5.0 from 1 ratings.

### Do Fraction Calculator Plus #1 or Acid Interval have ads?

Fraction Calculator Plus #1 shows ads; Acid Interval does not.

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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.*