Ultimate Car Audio App vs Knuckle Log

UCAA — Ultimate Car Audio App is the all-in-one toolkit for car audio enthusiasts, installers, and professionals. Whether you're designing an enclosure, wiring speakers, or looking for a shop near you, UCAA has you covered. CALCULATORS & TOOLS - Box Calculator — Design sealed, ported, bandpass, and slot-ported enclosures - Speaker Wiring — Find the right impedance for any wiring configuration - Cone Area — Compare driver combinations (two 10s vs one 15, etc.) - Electrical Calculators — Power, wattage, and wire sizing - dB Power — Calculate sound pressure levels - Ohm's Law — Voltage, current, and resistance - Tone Generators — Test tones for tuning and rattle hunting DATABASES - Subwoofer Database — Thiele-Small specs and box recommendations for hundreds of drivers - Amp Dyno Results — Real-world power measurements vs. rated specs DIRECTORY - Find a Shop — Browse verified car audio installation shops with specialties, location, and contact info - Browse Brands — Discover car audio manufacturers and their profiles LEARN - FAQs — Common walls, HPF/LPF, subsonic filters, strapped amps, and more - Tutorials — Step-by-step how-to guides - Industry News — Latest car audio news from around the web UCAA PRO Upgrade to UCAA Pro for an ad-free experience across the entire app. FOR SHOPS & BRANDS Own a car audio shop or represent a brand? Create your page on UCAA and get discovered by enthusiasts in your area. Shop Pro members get enhanced visibility and a full gallery. Built for the community. Free to use. Updated regularly.

The record of the work you did yourself. Every log app tracks oil changes. Knucklelog vets the proof. Snap the receipt and the record fills itself in — vendor, date, total, part numbers — then gets checked against your odometer history and locked into a ledger a stranger can trust. LOG IT IN SIX TAPS Pick the vehicle, tap the job, snap the receipt. Date and mileage fill themselves in. No receipt? Log it anyway — your word, on the record. THE LEDGER KEEPS SCORE Every vehicle carries its full service history: verified jobs, flagged gaps, documented spend, odometer timeline. Nothing slips, nothing fades. DUE MEANS DUE Set intervals once. Knucklelog watches the calendar and the odometer, and reminds you before the job is late — and nags politely once it is. THE BUYER REPORT When it's time to sell, export the whole verified history as a clean, shareable report. DIY history usually hurts resale — a vetted record flips that. YOURS, OFFLINE, PORTABLE Works in the garage with no signal — records queue and sync when you're back. Export a complete JSON snapshot anytime. Delete your account and all its data in-app, no email required. PLANS Free: 1 vehicle, on-device receipt OCR, the full ledger, torque specs, and fuel log. Basic ($24.99/yr): 2 vehicles, AI receipt scans (10/mo), buyer reports included, cloud sync. Premium ($49.99/yr): 10 vehicles, AI scans (25/mo) — room for the project cars. Or unlock a one-time Buyer Report for a single vehicle ($35.99). Subscriptions renew yearly until canceled in Settings. Terms: https://knucklelog.com/terms · Privacy: https://knucklelog.com/privacy