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Shop software for car audio & mobile electronics

Run your install bay without the paper chaos.

12v.Biz Toolbox is the scheduling, check-in, and work-order app built for car audio, tint, and 12-volt shops. Book jobs, text customers, and document every vehicle — from any phone in the shop. Keep your POS and QuickBooks; the Toolbox adds what they're missing.

  • A shared calendar your whole team can see — no more double bookings
  • Automated reminder texts that cut no-shows
  • Photo check-ins that protect your shop from damage claims

14-day free trial · No credit card required

Trusted by 12-volt shops across North America since 2019

  • Audio by Art
  • DC Car Audio
  • Certified Autosound & Security

Car audio, tint, and remote-start shops run hundreds of thousands of work orders, texts, and photo records through the Toolbox a year — and haven't gone back to paper or other basic tools.

The better way

Stop running a modern shop from a paper book

The old way

  • A paper appointment book only one person can read
  • "He said, she said" damage disputes with no proof
  • Calling every customer to confirm and remind
  • Job notes scattered across scratch pads and phones

With the Toolbox

  • A shared calendar on every phone, tablet, and computer
  • Timestamped check-in photos and customer signatures
  • Reminder texts sent automatically before every job
  • Every job's notes, photos, and history in one work order

Core features

Everything you need to run the bay

Five tools that replace the paper book, the scratch pad, and the phone tag — without touching your POS.

Scheduling

Every tech and job for the day on one shared calendar — from any phone.

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Vehicle Check-In

Photos + signature at drop-off — damage disputes end before they start.

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“Small or large, single or multi-store, I strongly suggest 12v.Biz Toolbox to everyone in mobile electronics. Managing the schedules for my 3 locations from one login is a huge time-saver.”

Pat LeePat LeeCertified Autosound & Security

Digital Work Orders

Every job's photos, parts, and status in one place — not on the whiteboard.

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Two-Way Texting

Updates and approvals from one shop number — not your techs' cells.

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QuickBooks Integration

Sync customers two ways with QuickBooks Online — enter them once.

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Vehicle check-in

Prove the vehicle's condition before you touch it

Trade the paper scratch pad for a digital check-in. Snap photos, capture the customer's signature, and email them a clean before-and-after report they can trust.

  • Photo documentation on every check-in and check-out
  • Customer signature captured right in the app
  • Professional check-in / check-out emails sent automatically

Explore vehicle check-in

“I love the professionalism the Toolbox gives us. Having the check-in photos for the client to reference the condition of their vehicle before and after we worked on it gives them great peace of mind.”

Arturo CeballosArturo CeballosAudio by Art

Two-way texting

Text customers without handing out your cell number

Confirmations and reminders go out automatically, and every reply lands in one shared shop inbox — reachable from any device, never stuck on a staffer's personal phone.

  • Reminders that go out on their own — fewer no-shows, fewer empty bays
  • Two-way texts and photos in one shared inbox
  • "Your vehicle is ready" messages in a single tap

Explore two-way texting

“The SMS feature is a time saver for us and the client — click a button and the Toolbox texts them. And the paper we save is mind-blowing; we haven't written in the book since KnowledgeFest in Dallas.”

Cory VaillancourtCory VaillancourtDC Car Audio

How it works

Switch from paper in a day

  1. Start your free trial

    Your shop is set up the same day. No credit card, no sales call.

  2. Add your team and checklists

    Set up staff logins, custom check-in lists, and your work-order statuses.

  3. Book your first job

    Customers get confirmation and reminder texts automatically. You're live.

Tony Dehnke, founder of 12v.Biz

From the founder

Built by a shop owner, for shop owners

I’m Tony Dehnke. I opened Driven Audio in British Columbia in 2010 and grew it into an award-winning shop before selling it in 2017.

I built the Toolbox because our industry deserved better than paper scratch pads and "he said, she said" damage disputes. It’s the software I wish I’d had in the bay — nothing you don’t need, at a price a shop can actually justify.

Today it helps car audio, tint, and 12-volt shops across North America book jobs, protect their shops, and keep customers in the loop.

— Tony Dehnke, Founder, 12v.Biz

Get your bay off paper this week

Keep your POS and QuickBooks — add the scheduling, texting, and work orders your shop is missing. $30 per tech, cancel anytime.

  • No credit card required
  • Cancel anytime
  • Live chat support

14-day free trial · No credit card required