Smog check software for California
California smog stations mostly choose between SmogScanner, Smog Advantage, Smog Master and Smog Pro. All four write work orders and BAR invoices; SmogScanner is the phone app that scans the VIN and shows the smog test.
All four side by side
SmogScanner
- Where it runs
- Android and iPhone app (iPhone in early access), and any web browser
- Reading the car
- The phone camera reads the VIN. Typed plates, 10 a day free
- Shows the smog test
- Yes: whether it needs one, and OIS, ASM or two-speed idle
- Price
- $19, $39 or $49 a month, by features
- Free to try
- Scanning a VIN is free
Smog Advantage
- Where it runs
- Web browser, tablet or kiosk
- Reading the car
- Plate to VIN in all 50 states. 2D scanner for license and DMV registration
- Shows the smog test
- Not advertised
- Price
- $19, $39 or $49 a month, by work orders
- Free to try
- 30 days, and 3 months free for new shops
Smog Master
- Where it runs
- Cloud, or a computer at the shop
- Reading the car
- DMV barcode scan
- Shows the smog test
- Not advertised
- Price
- About $0.20 a work order
- Free to try
- 150 work orders
Smog Pro
- Where it runs
- Web browser on a phone or tablet
- Reading the car
- Scans IDs and VINs
- Shows the smog test
- Not advertised
- Price
- $15, $40 or $100 a month
- Free to try
- 100 free reminders
Last reviewed October 26, 2026. Their sites were checked June 2026; prices and features can change. We make SmogScanner.
Source: smogadvantage.com
Source: smogmaster.com
Source: smog-pro.com
If something here has changed, tell us and we will fix it.
Common questions
Which smog check software has a phone app?
SmogScanner has a phone app for Android, and for iPhone in early access. Smog Advantage, Smog Master and Smog Pro run in a web browser or on a computer at the shop.
Does any smog check software connect to the BAR analyzer?
None of the four. Each one leaves the smog test on the BAR analyzer. Smog Advantage prints a DMV barcode the technician scans into the analyzer.
Which one tells me which smog test a car needs?
SmogScanner shows, on the scan, whether the car needs a smog check and which test: OIS, ASM or two-speed idle. The other three don’t advertise this. Your analyzer has the final word.
How much does smog check software cost?
Most plans cost $15 to $100 a month. Smog Advantage is $19 to $49 by work orders, Smog Master about $0.20 a work order, Smog Pro $15, $40 or $100, and SmogScanner $19, $39 or $49 by features, with free VIN scanning.