Comparison

Airplus vs Subwoofer Box Calculator

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

Head to head
About

Airplus

This utility app allows for the debugging and adjustment of car audio device parameters. It connects via Bluetooth to modify settings and optimize sound output.

Highlights
  • App debugging for car audio
  • Bluetooth connectivity
  • Parameter adjustment
  • Device settings modification
Features
Read full description

Airplus P12 is an app debugging software for car audio devices, which adjusts various parameters of the device through Bluetooth connection.

About

Subwoofer Box Calculator

Features
Read full description

Subwoofer Box Calculator provides car audio enthusiasts, custom fabricators, and DIY builders with precise acoustic engineering tools for subwoofer enclosure design. Whether designing a compact sealed enclosure for tight, punchy sound quality or a high-output ported box tuned for deep bass SPL, Subwoofer Box Calculator delivers instant calculations and complete woodworking cut sheets. CORE CAPABILITIES: • Sealed & Ported Enclosure Design: Calculate gross internal volume, net volume, target resonance, port surface area, and physical port length. • Automated Cut Lists: Generate comprehensive cut sheets with exact dimensions for every panel based on your specified material thickness (MDF, birch plywood, etc.). • Accurate Displacement Compensation: Easily factor in subwoofer driver displacement, port wall volume, and internal bracing for true acoustic volume. • Metric & Imperial Measurements: Effortlessly switch between inches, cubic feet, centimeters, and liters. • Quick Presets & Full Customization: Start quickly with standard driver diameters (8, 10, 12, 15, and 18 inches) or build fully custom boxes from your exact dimensional constraints. • Save & Manage Projects: Keep all your enclosure designs organized on your device, duplicate builds for quick comparison, and export cut sheets. • Hardware & Parts Guide: Browse recommended components including terminals, damping material, port flares, and assembly supplies. Achieve optimal bass response and build your next subwoofer enclosure with confidence.

Screenshots

Airplus4 screens
Subwoofer Box Calculator4 screens

Verdict

The call

The clearest difference is ads: Airplus at none against Subwoofer Box Calculator's shown. Subwoofer Box Calculator's advantage is update cadence (every 3 weeks vs every 5 months). On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Airplus ships an update every 5 months, Subwoofer Box Calculator every 3 weeks. The most recent releases landed on November 4, 2026 and November 6, 2026 respectively.

Scorecard2 real differences · 8 level
Airplus versus Subwoofer Box Calculator: the parameters behind the verdict, then further details
ParameterAirplusSubwoofer Box Calculator
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.4
Further details — not scored
Size65 MB50 MB
Age rating4+4+
DeveloperGuang Dong Sound PowerSahar Yehezkel Avraham

In-app purchases

None

Airplus

No in-app purchases

None

Subwoofer Box Calculator

No in-app purchases

Questions

Is Airplus free?
Airplus is free to download, with no in-app purchases.
Is Subwoofer Box Calculator free?
Subwoofer Box Calculator is free to download, with no in-app purchases.
Do Airplus or Subwoofer Box Calculator have ads?
Subwoofer Box Calculator shows ads; Airplus does not.
Which is updated more often, Airplus or Subwoofer Box Calculator?
Airplus ships an update every 5 months, and Subwoofer Box Calculator every 3 weeks. Most recently, Airplus was updated on November 4, 2026 and Subwoofer Box Calculator on November 6, 2026.

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