ShiftLock 17+

For the Towing Professional

Mark Knowles

Designed for iPad

    • $6.99



Large database of USA, European, and foreign models from 1985 up to the most recent electronic shifts.

No more fumbling at the scene of a wreck, or wasted time chasing down customer’s keys.
Your PPIs just got easier.
With this app, you always have an alternative to dragging.

Reduce damage to valuable company equipment and customer's vehicles. 

Ultra fast learning curve. You'll be comfortable quickly using this app on rotations and TOLs where time really matters.

We reduce your time roadside with the ability to save the casualty vehicle's release info for later use, or for use in areas with poor cellular service.

Content updates monthly at no additional cost.

What’s New

Version 2.7

1-Corrections page-easily submit a correction to an existing vehicle
2-Share app with your friends
3-Submit a photo to the app, and Shift-Interlock Releases Facebook Page
4-Save-Save vehicles on the device for areas of bad reception

Ratings and Reviews

3.3 out of 5
35 Ratings

35 Ratings

Cyphen19823 ,

Not as described

This app has limited amounts of available information they have most makes and models but as a repossessor needed a couple cars that did not appear on here

Jameson&Rye ,


I don’t know how anyone could rate this lower than 5 stars. It’s a wealth of information at your fingertips, plus they have a very active FB page with many followers willing to share knowledge. I’ve used this for countless repo’s and it’s paid for itself over and over again. It’s nice knowing when I’m going into a dangerous situation that I have the ability to grab my phone and quickly find the information I need to get in, get out, and get paid

kevAAT ,

Needs a update

Not many years are listed on here. Needed a 2017 cadi and couldn't find it. I also think you should allow people to post videos of where it is located instead of pictures sometimes you can not see the exact location just "front" "back" "passanger side" but not exactly where it is. But if it got a good update with all this. Itll be a great app.

App Privacy

The developer, Mark Knowles, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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