Comparison

Numerical³ vs Audio Boost

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

Audio Boost

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
Read full description

Audio Boost is equipped to raise the volume of your sound. Make your device sounds much louder that system default. Audio Boost assist you in adjusting the volume of sound levels and improve the quality of sound so that make the best out of your music. You can play any style audio tone of music with powerful equalizer and revise the frequency of those tunes. Change it to the style you want: - Custome - Flat - Full - Bass - Bright - Pop - Rock - Classical - Jazz Subscription Info: - $7.99 Monthly and $29.99 Yearly. - Payment will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration/price selected) unless auto-renew is turned off at least 24 hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period at the cost of the chosen package. - You can manage your subscription and/or turn off auto-renewal by going to your iTunes Account Settings, but refunds will not be given for any unused portion of the term. Terms of Use: https://sites.google.com/view/audioboost-terms-of-use/home Privacy Policy: https://sites.google.com/view/audioboost-privacy-policy/home

Screenshots

Numerical³4 screens
Audio Boost3 screens

Verdict

The call

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.

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. Audio Boost sells 2 in-app purchases, starting at $7.99 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 4.6. 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.

UpkeepUpdate frequency

Numerical³ ships an update every 2 weeks, Audio Boost every 5 weeks. The most recent releases landed on September 19, 2026 and September 14, 2026 respectively.

Scorecard6 real differences · 4 level
Numerical³ versus Audio Boost: the parameters behind the verdict, then further details
ParameterNumerical³Audio Boost
PriceFreeFree
Rating4.8 (1.3K ratings) — better4.6 (86 ratings)
Positive reviews75.4% of reviews — better0.0% of reviews
Number of ratings1.3K — better86
Update frequencyEvery 2 weeks — betterEvery 5 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS18.013.0 — better
Further details — not scored
Size113 MB19 MB
Age rating4+4+
DeveloperAndrew J Clark钰林 温

Customer experience

Numerical³

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

Audio Boost

All ratings86 ratings
Positive89.5%
Neutral2.3%
Negative8.1%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

Audio Boost

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Numerical³

No in-app purchases

2 purchases

Audio Boost

Subscriptions2
  • Audio Boost Premium Month$7.991 Month
  • Audio Boost Premium Year$29.991 Year

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 19, 2026 and Audio Boost on September 14, 2026.

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