RV Tow Check 4+

Accurate Car Towing Capacity

Dave Gray

Designed for iPad

    • 1.9 • 35 Ratings
    • $1.99



The RV Tow Check app is the first "Before You Buy an RV" towing capacity calculator that conforms to manufacturers' weight safety and warranty warnings.

With 100% accuracy, RV Tow Check answers the most often asked questions, "How much can my truck tow?" or "How much can my SUV tow?" or "How much can my motor coach tow?" However, the accuracy of one's input is not guaranteed.

RV Tow Check uniquely complies with the SAE J2807 trailer weight rating (TWR) calculation methodology.

RV Tow Check requires four weight inputs from the tow vehicle. The required entries are gross combination weight rating (GCWR), gross vehicle weight rating (GVWR), gross vehicle weight (GVW), and trailer weight ratings (TWR).

RV Tow Check provides instant max towing capacity results as the user selects various kingpin or tongue weight percentages.

RV Tow Check simplifies the process of obtaining the realistic vehicle towing capacity (RVTC) for any vehicle towing a trailer. The app's math calculations are as accurate as the weights entered into it.

RV Tow Check displays realistic vehicle towing capacity for a fifth wheel, gooseneck, and conventional trailers (bumper pull) simultaneously.

RV Tow Check users have the option to select a fifth wheel hitch if it is not already installed in the truck.

RV Tow Check users may include any additional unscaled weight for cargo, aftermarket equipment, and passenger weight. The app does not assume everyone weighs 150 or 175 pounds as the manufacturers do.

RV Tow Check can assist RV buyers and dealers in ensuring tow vehicles are appropriately matched to any type of trailer towed.

RV Tow Check provides users with the choice of beginner or expert mode of operation. The app's initial mode is Beginner. Beginner mode has detailed step-by-step instructions. Once the user has learned the correct use, they may switch to "Expert Mode." Expert users will view a streamlined single-page calculator without the instructions.

RV Tow Check is a must-have tool for anyone owning or considering a tow vehicle less than a late-model one-ton dually truck.

RV Tow Check is a small price to pay, considering it can save one from a very costly mistake.

What’s New

Version 1.1.2

Updated the app to meet current iOS requirements. The app is now formatted for iPhone and iPad devices. Improved instructions.

Ratings and Reviews

1.9 out of 5
35 Ratings

35 Ratings

rks123456789 ,

Waste of $1.99

The app was referenced in an article about weighing at a CAT scale. The app doesn’t use hardly any of the numbers achieved during initial and recent-weighs.

It really didn’t tell me anything I didn’t already know from my TV owners manual about maximum trailer weights.

Developer Response ,

Sorry to hear about your dissatisfaction with the RV Tow Check app. I would like to help better understand what the app is for and how to correctly use it. It is your responsibility to enter a minimum of four required weights: CGWR, GVWR, GVW and the TWR for at least the trailer classification you are considering. The app is not product of CAT Scales nor associated with the RV Tow Check. RV Tow Check's function is only to provide you a realistic vehicle towing capacity of your vehicle. If you were seeking realistic vehicle towing capacity for towing a conventional trailer, it is not uncommon the app results will be the same as the published TWR. However, in cases when the tow vehicles weigh much more than the published curb weight, a realistic TWR will be much less. I will gladly answer any questions when you email me at info@RVtowCheck.com.

fourkidsinfamily ,

If you understand vehicle weights...it works great!

If you understand vehicle weights this can save you some time. Tongue weight as a percentage of total weight needs to fall in the correct range. To me the cautions at the low tongue weight are easily misunderstood.
The red doesn’t mean they aren’t safe...it means your trailer may or may not be able to achieve a low tongue weight. Some can some can’t. The yellow means it is more likely you can reach that tongue percent but again, not all trailers can. The green just means it should be possible for any proper trailer to reach that tongue weight percent.
Maybe overly simplified but a pretty good warning to people too.
Thanks for the app.

Developer Response ,

Thank you for your 5-star rating and feedback. I will consider your excellent comments in the next app upgrade. If you ever have any questions, please contact me at https://rvtowcheck.com/contact_us.html.

Ken - North Carolina ,

Great App

My wife and I have been looking for a travel trailer for several months and it has been extremely frustrating to figure out how much weight my truck could safely tow. And, we constantly got different answers from RV sales persons. We then found this app and it is the best purchase we made and we are now in the final stages of buying a travel trailer that we know my truck can handle. I did have a few questions understanding the results and Dave was very responsive and helpful. I recommend this app to anyone that is considering a travel trailer or fifth wheel! Thanks Dave!

Developer Response ,

Thank you, Ken, for the positive review. It was a pleasure to assist you to ensure you fully understood the results. If you ever have additional questions, don't hesitate to ask. Best regards, and first and foremost, travel safely. Dave

App Privacy

The developer, Dave Gray, 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 Not Collected

The developer does not collect any data from this app.

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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