Design, calculate, and build better car audio systems. Access powerful tools, find shops, and explore brands — all in one app. Free to use.
UCAA (Ultimate Car Audio App) is a complete car audio toolkit for enthusiasts, installers, and professionals.
Whether you're designing a subwoofer box, wiring speakers, or searching for a local shop, UCAA provides the tools and data you need.
🔧 CALCULATORS & TOOLS
- Box Calculator — Design sealed, ported, bandpass, and slot-ported enclosures
- Speaker Wiring — Calculate impedance for any wiring configuration
- Cone Area — Compare subwoofer setups (e.g., dual 10s vs single 15)
- Electrical Calculators — Power, wattage, voltage, and wire sizing
- dB Calculator — Estimate sound pressure levels
- Ohm’s Law Calculator — Voltage, current, and resistance
- Tone Generator — Test tones for tuning and diagnostics
📊 DATABASES
- Subwoofer Database — Thiele-Small parameters and box recommendations
- Amp Dyno Results — Real-world amplifier power vs rated specs
📍 DIRECTORY
- Find Car Audio Shops — Browse installers by location, specialties, and contact info
- Browse Brands — Explore car audio manufacturers and product lines
📚 LEARN
- FAQs — Crossovers, HPF/LPF, subsonic filters, and system design basics
- Tutorials — Step-by-step guides for installs and tuning
- Industry News — Updates from the car audio community
🚀 UCAA PRO
Upgrade to UCAA Pro for an ad-free experience across the entire app.
🏪 FOR SHOPS & BRANDS
Own a shop or represent a brand? Create your profile on UCAA to reach local customers. Shop Pro members get enhanced visibility and a full gallery.
Built for the car audio community. Free to use and regularly updated.
Latest Version
8.5.5Uploaded by
Trọng Tín
Requires Android
7.0
Category
Free Productivity AppContent Rating
Everyone
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Flag as inappropriateLast updated on May 10, 2026
8.5.5 — Save Details
Saved designs just got a major upgrade. Tag your saves with the subwoofer they're built for, RMS power, target use (SPL, SQ, Daily, or any combo), build notes, and up to 4 photos. Picking a sub when you save auto-fills its specs the next time you load that design — your saves become a real library of your builds.
Also: profile bios, Wi-Fi-only setting for photo uploads, and various improvements throughout.