Comparison

S4_control 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

S4_control

Features
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在这里你可以连接上音箱,里面有许多功能,比如音乐,麦克风,吉他音量都是可以调节的。在个别界面还有均衡功能,也还有见红音效,高中低音等。 让你无须接触蓝牙音箱,在一定距离内就可以控制音箱了。

About

Subwoofer Box Calculator

Features
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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

S4_control4 screens
Subwoofer Box Calculator4 screens

Verdict

The call

The clearest difference is ads: S4_control at none against Subwoofer Box Calculator's shown. S4_control also leads on iOS requirement (9.0 vs 16.4). Subwoofer Box Calculator's advantage is update cadence (every 3 weeks vs every 9 months). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

S4_control ships an update every 9 months, Subwoofer Box Calculator every 3 weeks. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 3 level
S4_control versus Subwoofer Box Calculator: the parameters behind the verdict, then further details
ParameterS4_controlSubwoofer Box Calculator
PriceFreeFree
Update frequencyEvery 9 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS9.0 — better16.4
Further details — not scored
Size108 MB50 MB
Age rating4+4+
DeveloperGUANDDONG TIANPU TECHNOLOGY GROUP CO.,LTD.Sahar Yehezkel Avraham

In-app purchases

None

S4_control

No in-app purchases

None

Subwoofer Box Calculator

No in-app purchases

Questions

Is S4_control free?
S4_control 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 S4_control or Subwoofer Box Calculator have ads?
Subwoofer Box Calculator shows ads; S4_control does not.
Which is updated more often, S4_control or Subwoofer Box Calculator?
S4_control ships an update every 9 months, and Subwoofer Box Calculator every 3 weeks. Most recently, S4_control was updated on October 10, 2026 and Subwoofer Box Calculator on October 25, 2026.

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