# Numerical³ vs Louder Booster

The clearest difference is in-app purchases: Numerical³ at none against Louder Booster's 2. Numerical³ also leads on rating (4.8 vs 4.5) and review sentiment (75% vs 54%). Louder Booster's advantage is iOS requirement (13.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Louder Booster sells 2 in-app purchases, starting at $6.99 per month. Numerical³ asks for nothing beyond the download.

Numerical³ holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 1.3K and 402 respectively. Written reviews point the same way: 75% of Numerical³'s written reviews are positive against 54% of Louder Booster's.

Numerical³ ships an update every 2 weeks, Louder Booster weekly. The most recent releases landed on September 19, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Numerical³ | Louder Booster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.3K ratings)](https://appshunter.io/ios/app/numerical/id804548449/reviews)** | [4.5 (402 ratings)](https://appshunter.io/ios/app/louder-booster-volume-boost/id6450641910/reviews) |
| Number of ratings | **1.3K** | 402 |
| Positive reviews | **75.4% of reviews** | 54.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | **Paid** | Subscription |
| Size | 113 MB | 39 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) | [迎辉 罗](https://appshunter.io/developer/1684181788) |

## 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


### Louder Booster

[App page](https://appshunter.io/ios/app/louder-booster-volume-boost/id6450641910)

Amplify your device's audio with enhanced bass and powerful sound. This app is designed to elevate your listening experience for music, movies, and games, taking your audio to new heights.

**Highlights:** Volume amplification, Enhanced bass, Improved audio experience, Subscription plans, Remove ads

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Equalizer Speaker Pro Month | $6.99 | per month |
| Equalizer Speaker Pro Year | $29.99 | per year |

**What reviewers like**

- 🎶 Great sounds
- 🔊 Volume boost effective
- 👍 Works well
- 💖 Maravilhoso
- ✨ Chido

**What reviewers complain about**

- 💸 Requires payment for full features
- 👎 Does not work as expected
- 🚫 Not free
- 📉 Quality degrades
- 🔒 Subscription issues

**Reported bugs**

- App hacks into Apple Store
- Subscription purchased without consent
- App does not work on ringtone
- App doesn't play through YouTube
- App doesn't download stuff

**Requested features**

- Make the app free to use
- Fix download issues
- Improve compatibility with YouTube
- Allow ringtone volume boost
- Make it work without payment


## Frequently asked questions

### Is Numerical³ free?

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

### Is Louder Booster free?

Louder Booster is free to download, with in-app purchases available.

### Which has better reviews, Numerical³ or Louder Booster?

Numerical³ is rated higher. Numerical³ averages 4.8 out of 5 from 1.3K ratings, while Louder Booster averages 4.5 from 402 ratings.

### Do Numerical³ or Louder Booster have ads?

Neither Numerical³ nor Louder Booster shows ads.

### Which is updated more often, Numerical³ or Louder Booster?

Numerical³ ships an update every 2 weeks, and Louder Booster weekly. Most recently, Numerical³ was updated on September 19, 2026 and Louder Booster on September 21, 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.*