Woofer Box Calculator PRO vs Box Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Woofer Box Calculator PRO
Design custom enclosures for car subwoofers with advanced calculations. This tool considers cabin gain, power compression, and port compression to predict final SPL. Save and load projects, drivers, and vehicles for easy management.
- Subwoofer enclosure design
- Cabin gain consideration
- Power and port compression
- Predict final SPL
- Gross volume handling
- Vented enclosure calculation
- Save and load projects
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Woofer Box Calculator PRO will help you design enclosure (box) for your bass car audio speaker (sub woofer). It was developed by 2012 and 2013 European champion in dB Drag Racing and was designed to be easy and transparent. It is better than other software because it also considers approximate cabin gain, power compression and port compression. Because of that, it can also predict final SPL in your car. Furthermore, it knows how to handle total (gross) box volume instead of net box volume. It can also calculate vented (ported) enclosures in the opposite way (e.g. it can calculate vent size or total box size for desired vent). It can even calculate optimal box for your car and equipment, for burping or for music, depending on priority (SPL to SQ). Projects can easily be saved and loaded. Boxes, Drivers and Vehicles can also be saved and loaded separately. Units an constraints can be changed under settings. This is the PRO version with without advertisement and all features unlocked!
Box Builder
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Tool to help determine box dimensions and pieces required for boxes of tube straightening rolls. Created by Jacob McLachlan (mclachlan.11@osu.edu) for Turner Machine Company.
Screenshots
Verdict
The clearest difference is price: Box Builder at Free against Woofer Box Calculator PRO's $4.99. Box Builder also leads on update cadence (every 7 months vs every 18 months). Woofer Box Calculator PRO's advantage is iOS requirement (7.0 vs 15.0). On ads, 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
Box Builder is free to download; Woofer Box Calculator PRO costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Woofer Box Calculator PRO ships an update every 18 months, Box Builder every 7 months. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.
| Parameter | Woofer Box Calculator PRO | Box Builder |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 3.2 (5 ratings) — better | — |
| Positive reviews | 41.2% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 18 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 4 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Matjaz Marolt | Neill Mclachlan |
In-app purchases
Woofer Box Calculator PRO
No in-app purchases
Box Builder
No in-app purchases
Questions
Is Woofer Box Calculator PRO free?
Is Box Builder free?
Do Woofer Box Calculator PRO or Box Builder have ads?
Which is updated more often, Woofer Box Calculator PRO or Box Builder?
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