# Woofer Box Calculator PRO > Car subwoofer enclosure design and SPL prediction tool. (iPhone/iPad app by Matjaz Marolt.) - Source: https://appshunter.io/ios/app/woofer-box-calculator-pro/id887935204 (this page in markdown: same URL + `.md`) - Developer: [Matjaz Marolt](https://appshunter.io/developer/874326830) - Category: Utilities, Music - Price: $4.99 - Rating: 3.20/5 from 5 App Store ratings · 17 written reviews indexed - Age rating: 4+ - Requires: iOS 7.0 · 4 MB - Languages: American English - Released: 2014-06-22 - Data updated: 2026-08-18 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/woofer-box-calculator-pro/id887935204/reviews.md ## What is Woofer Box Calculator PRO? 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! ## Key features - Subwoofer enclosure design - Cabin gain consideration - Power and port compression - Predict final SPL - Gross volume handling - Vented enclosure calculation - Save and load projects ## Chart rankings - #190 in Top Paid · Utilities (US App Store) ## Recent user reviews (10 of 17) All indexed reviews: https://appshunter.io/ios/app/woofer-box-calculator-pro/id887935204/reviews.md ### 3/5 — Pretty accurate, helpful for quick sub box comparisons *2022-11-23, version 1.2* I got this app expecting some garbage that wasn’t worth the $5, but I was pleasantly surprised. It’s actually pretty close to real world scenarios and overall I like it. BUT….I will say someone that doesn’t have much car audio knowledge will struggle. TO THE DESIGNERS…will you please make an option for more than 1 round port? The way it’s set up now, the calculations aren’t accurate if you have more than 1 port in the enclosure. And maybe an overall explanation of what specifications are needed for say subwoofers, boxes, etc… Not everyone knows how to calculate subwoofer “sd” or “bl” nor know where to look. That would just make it easier for everyone, mainly people just beginning or just don’t know. Overall though, I’m pleased with the purchase ### 4/5 — Great *2022-03-03, version 1.2* I love using it. Would you be able to add landscape mode? Also be able to change the plots cause my graph gets cut off and I can’t see the numbers especially when it’s low tuned. ### 4/5 — Pretty good app *2021-12-20, version 1.2* This is a pretty good app! A help section would be great. I have a couple questions. When you use a rectangular port does it change the net volume to account for the port volume? Does it calculate rectangle ports as using common walls? ### 1/5 — Save your money and time *2021-09-07, version 1.2* App is poorly designed and confusing to use. The box calculator is pretty much useless. ### 4/5 — Updated *2021-02-04, version 1.1* There were some bugs that made it impossible to save the Driver, Enclosure, and Project. They fixed 2/3. Driver and Enclosure can be saved, so I don’t lose my T/S parameters. Enclosure saves as well but it only lets me save one enclosure, so I can’t load different boxes. Project only lets me save one project as well. Overall the frequency curve looks okay, but I feel like under Enclosure the port area and lengths don’t match up with WINISD, Torres, and Ultimatecaraudioapp. I don’t use Calculate to find the frequency it’s supposed to be tuned to by inch2 and length. Still it’s a big improvement and the frequency curve somewhat matches up with my last sweep on SPL Lab ### 1/5 — Does not save *2019-10-27, version 1.0.3* Very glitchy since it cannot save any of your work. Even if you type in a new name and click save it asks to overwrite the old name, which it still doesn’t save over. Very annoying after you enter all the T/S parameters only to lose it all. ### 5/5 — Does the job *2019-05-18, version 1.0.3* Nice app to give you a close idea of how your system will react - I would say the SPL estimates are in the kick panel but that’s a great starting point I’ve used to for small builds up to huge and was only off a db or 2 ### 4/5 — Mr Grozdanov *2019-02-02* Totally stupid I lost my money for nothing . ### 1/5 — Not good *2017-06-25, version 1.0.3* Do not buy! Nowhere in the app does it help you find dimensions for a sub box. ### 5/5 — Great app DOES WORK!!!!! *2017-01-26, version 1.0.2* Entered in cabin length(very important), driver info, box dimensions, and amp power everything came together on the graph allowing me to fine tune the curves. ## Frequently asked questions about Woofer Box Calculator PRO ### What is Woofer Box Calculator PRO used for? Woofer Box Calculator PRO is used to design custom enclosures for car subwoofers. It helps calculate optimal box dimensions and predict the final Sound Pressure Level (SPL) in your car. ### How does Woofer Box Calculator PRO differ from other software? This PRO version considers factors like approximate cabin gain, power compression, and port compression, which are often overlooked by other software. This leads to more accurate SPL predictions. ### Can I save my designs in Woofer Box Calculator PRO? Yes, projects, individual drivers, and vehicle profiles can be easily saved and loaded within the application for future reference or modification. ### What kind of enclosures can Woofer Box Calculator PRO calculate? It can calculate both sealed and vented (ported) enclosures. For vented enclosures, it can calculate vent size or total box size based on desired parameters. ### Does Woofer Box Calculator PRO have ads? No, this is the PRO version and it is without advertisement. ### What is the price of Woofer Box Calculator PRO? Woofer Box Calculator PRO is a paid application priced at $4.99. ### What devices is Woofer Box Calculator PRO compatible with? Woofer Box Calculator PRO is supported on iPhone and iPod devices. ### How often is Woofer Box Calculator PRO updated? The latest version, 1.2, was released on February 24, 2021. The app was originally developed in 2014. ## Version history (last 5 releases) ### 1.2 — 2021-02-24 Fixed bugs with saving and driver parameters. ### 1.1 — 2021-01-24 Some bugs fixed. ### 1.0.3 — 2017-06-05 This app has been updated by Apple to display the Apple Watch app icon. Some bugs fixed. ### 1.0.2 — 2014-11-05 New features ### 1.0.0 — 2014-06-18 No release notes. ## Apps similar to Woofer Box Calculator PRO | App | Rating | Price | Category | | --- | --- | --- | --- | | [EZY-DSP](https://appshunter.io/ios/app/ezy-dsp/id6502801326) | 4.3 (9) | Free | Utilities | | [Bassport](https://appshunter.io/ios/app/bassport/id1573554303) | 4.3 (4) | Free | Utilities | | [Speaker Box Lite](https://appshunter.io/ios/app/speaker-box-lite/id898625526) | 4.1 (339) | Free | Utilities | | [Ultimate Car Audio App](https://appshunter.io/ios/app/ultimate-car-audio-app/id1052058556) | 4.2 (79) | Free | Utilities | | [Box Builder](https://appshunter.io/ios/app/box-builder/id1640513711) | — | Free | Utilities | | [AX-DSP-XL](https://appshunter.io/ios/app/ax-dsp-xl/id1495854432) | 2.2 (5) | Free | Utilities | ## More apps by Matjaz Marolt - [Smart Tools - All In One Box](https://appshunter.io/ios/app/smart-tools-all-in-one-box/id1357964329) All apps by Matjaz Marolt: https://appshunter.io/developer/874326830 ## Related topics [subwoofer box calculator](https://appshunter.io/ios/topics/subwoofer-box-calculator) · [subwoofer box](https://appshunter.io/ios/topics/subwoofer-box) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-18.*