# Numerical³ vs Audio Boost

Numerical³ and Audio Boost both sit at 4.8 stars, but that hides the real split: 75% of Numerical³'s written reviews are positive against 0% of Audio Boost's. Numerical³ also leads on in-app purchases (none vs 2) and update cadence (every 2 weeks vs every 5 weeks). Audio Boost's advantage is iOS requirement (13.0 vs 18.0). On price, rating, ads and device support there is nothing between them.

Both are free to download. Audio Boost sells 2 in-app purchases, starting at $7.99 per month. Numerical³ asks for nothing beyond the download.

Numerical³ holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Numerical³ has 1.3K ratings behind it against 86, so its average is the more settled of the two. Written reviews point the same way: 75% of Numerical³'s written reviews are positive against 0% of Audio Boost's.

Numerical³ ships an update every 2 weeks, Audio Boost every 5 weeks. The most recent releases landed on September 27, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Numerical³ | Audio Boost |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.3K ratings)](https://appshunter.io/ios/app/numerical/id804548449/reviews)** | [4.6 (86 ratings)](https://appshunter.io/ios/app/audio-boost-sound-speaker/id6446273558/reviews) |
| Number of ratings | **1.3K** | 86 |
| Positive reviews | **75.4% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | **Paid** | Subscription |
| Size | 113 MB | 19 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrew J Clark](https://appshunter.io/developer/804548452) | [钰林 温](https://appshunter.io/developer/1676378831) |

## What reviewers say

### Numerical³

[App page](https://appshunter.io/ios/app/numerical/id804548449)

A powerful and beautifully designed calculator app that offers advanced scientific functions, automatic bracket handling, and a unique no-equals button interface. It integrates seamlessly with iOS features like widgets and keyboards for calculations anywhere.

**Highlights:** No equals button interface, Automatic bracket handling, Full scientific keypad, Today Widget integration, Numerical² Keyboard for any app, Equation editing, Customizable themes

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Great app
- 👍 Simple and intuitive
- 👍 Clean and beautiful design
- 🚀 Fast and responsive
- 👍 Customizable themes

**What reviewers complain about**

- 🐛 Bugs and glitches (unresponsive keys, calculation errors)
- 🔍 Lack of advanced functions (scientific, unit conversion)
- 💡 Needs more theme options
- 💡 Needs iPad support
- 💡 Needs widget support

**Reported bugs**

- Unresponsive keys
- Calculation errors
- Crashes on startup

**Requested features**

- Add scientific functions (square root, trigonometry, etc.)
- Implement an equals button
- Add more theme options
- Develop an iPad version
- Bring back widget support


### Audio Boost

[App page](https://appshunter.io/ios/app/audio-boost-sound-speaker/id6446273558)

This app amplifies your device's sound volume beyond system defaults. It offers a powerful equalizer to adjust sound quality and customize audio tones for various music genres, enhancing your listening experience.

**Highlights:** Increase device sound volume, Improve sound quality, Powerful equalizer, Customizable audio tones, Multiple music genre presets

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Boost Premium Month | $7.99 | per month |
| Audio Boost Premium Year | $29.99 | per year |


## Frequently asked questions

### Is Numerical³ free?

Numerical³ is free to download, with no in-app purchases.

### Is Audio Boost free?

Audio Boost is free to download, with in-app purchases available.

### Which has better reviews, Numerical³ or Audio Boost?

Numerical³ is rated higher. Numerical³ averages 4.8 out of 5 from 1.3K ratings, while Audio Boost averages 4.6 from 86 ratings.

### Do Numerical³ or Audio Boost have ads?

Neither Numerical³ nor Audio Boost shows ads.

### Which is updated more often, Numerical³ or Audio Boost?

Numerical³ ships an update every 2 weeks, and Audio Boost every 5 weeks. Most recently, Numerical³ was updated on September 27, 2026 and Audio Boost on September 14, 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.*