Comparison

Numerical³ vs Louder Booster

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Numerical³

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
Read full description

Numerical³ is still the calculator without equal. The first Numerical shipped in 2014—v3 brings long-requested improvements and the same focus on delightful, minimalist utility apps.MAC TOONumerical runs natively on macOS: multiple windows, tabs, resizing, desktop widgets, full keyboard support, and synced history. Download it on the Mac App Store.WIDGETSLock screen and Home Screen widgets—modernized on iPhone and iPad.THEMESBrand-new neo-morphic themes alongside our most popular picks—each with light and dark variants that follow your iOS appearance settings. Use the Theme Picker to preview them all.ICONSTheme Home Screen icons match iOS 26 with glass effects, Dark Mode, and tints.HISTORYYour equations stay visible on screen—above the keyboard on iPhone (portrait) and to the side on iPad and Mac. iCloud keeps history in sync across iPhone, iPad, and Mac.KEYBOARDSExternal keyboards are fully supported on iPhone, iPad, and macOS—including the shortcuts you expect.SOUND FXSounds and clicky feedback on iPhone, iPad, and Mac. Haptics on iPhone.14+ LANGUAGESThe entire app is localized in 14+ languages—including Japanese, Chinese, Korean, and Russian—with international digits and formats. Missing yours? Let us know.Mana Machines—Numerical³ and upcoming apps from a studio focused on delightful, minimal, human-centered utilities. More on the way.Questions or feedback: manamachineventures@gmail.comDeveloped by Andrew J Clark. Designed by Andrew J Clark & Alex Vanderzon.

About

Louder Booster

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
Read full description

Introducing our latest innovation, the Equalizer Speaker! This cutting-edge device is designed to enhance your audio experience by delivering powerful sound with amplified volume and enhanced bass. Whether you're listening to music, watching movies, or playing games, our Equalizer Speaker will take your audio to new heights. Subscription Plans: - 1 Month Subscription $6.99 - 1 Year Subscription $29.99 -Subscribe to get all features and remove ads.-Subscriptions are billed annually. Alternatively a one time payment plan is available (this is not a subscription). -Payment will be charged to your iTunes account at confirmation of purchase. Subscriptions will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. -Your account will be charged for renewal, in accordance with your plan, within 24 hours prior to the end of the current period.-You may check, manage or cancel the subscription in your iTunes account settings at any time after purchase. Manage Subscription Route: ‘Settings’—>‘iTunes&App Store’—>‘Apple ID’—>‘View Apple ID’—>‘Subscriptions’. Terms of Use: https://sites.google.com/view/equalizer-speaker--tou/home Privacy Policy: https://sites.google.com/view/equalizerspeaker-pp/home

Screenshots

Numerical³4 screens
Louder Booster3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard6 real differences · 4 level
Numerical³ versus Louder Booster: the parameters behind the verdict, then further details
ParameterNumerical³Louder Booster
PriceFreeFree
Rating4.8 (1.3K ratings) — better4.5 (402 ratings)
Positive reviews75.4% of reviews — better54.3% of reviews
Number of ratings1.3K — better402
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS18.013.0 — better
Further details — not scored
Size113 MB39 MB
Age rating4+4+
DeveloperAndrew J Clark迎辉 罗

Customer experience

Numerical³

All ratings1,338 ratings
Positive95.1%
Neutral2.1%
Negative2.8%
Written reviews487 reviews
Positive75.4%
Neutral9.4%
Negative15.2%

Louder Booster

All ratings402 ratings
Positive86.6%
Neutral2.5%
Negative10.9%
Written reviews35 reviews
Positive54.3%
Neutral0.0%
Negative45.7%

User reviews

Numerical³

From 1.3K App Store ratings

What we love

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

Room to improve

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

Louder Booster

From 402 App Store ratings

What we love

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

Room to improve

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

Bugs and requests

Numerical³

Reported bugs

3 issues
  • Unresponsive keys
  • Calculation errors
  • Crashes on startup

Requested features

5 requests
  • 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

Reported bugs

8 issues
  • 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
Show 3 more
  • App doesn't work at all
  • App doesn't boost ringtone volume
  • App quality degrades image

Requested features

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

In-app purchases

None

Numerical³

No in-app purchases

2 purchases

Louder Booster

Subscriptions2
  • Equalizer Speaker Pro Month$6.991 Month
  • Equalizer Speaker Pro Year$29.991 Year

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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