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RV Tow Check is the first "Before You Buy RV" towing capacity calculator that conforms to manufacturers' weight safety and warranty warnings and complies with the SAE J2807 trailer weight rating (TWR) calculation methodology.

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?"

RV Tow Check can assist all RV buyers and dealers to ensure tow vehicles are properly matched to any type of towed vehicle.

RV Tow Check provides users with the choice of beginner or expert mode of operation. It is recommended that first-time users start with the beginner mode and learn from the detailed instructions and pertinent details to become an expert user.

RV Tow Check simplifies the process of obtaining the realistic vehicle towing capacity for any vehicle towing a trailer, and it is as accurate as the weights that are entered into it.

RV Tow Check displays realistic vehicle towing capacity for a fifth wheel or gooseneck, and conventional trailers (bumper pull) simultaneously and provides instant results when selecting various kingpin or tongue weight percentages.

RV Tow Check requires a minimum of four inputs by the buyer or dealer. The required entries are gross combination weight rating (GCWR), gross vehicle weight rating (GVWR), the gross vehicle weight (GVW), and trailer weight ratings (TWR) for fifth wheel, gooseneck and conventional trailers.

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 pounds as the manufacturers do.

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’s capable of saving one from a very costly mistake.

What's New

Version 1.1.1

Minor edit correction.

Ratings and Reviews

Report doesn't make sense to a newbie


Entered in the required info for tow vehicle and trailer, the report generated talks about percentages of hitch load/tongue weight and provides numbers based on the range of acceptable percentages, but the calculated numbers presented in the report aren't explained...are these the max hitch load/tongue weights or what? Bottom line, I have no idea if the trailer I'm looking at is safe to tow with my vehicle, which is the whole point. App needs some work, or better explanation of what is being presented in the report.

Developer Response

Sorry to read that you are having some difficulty. There is no required entry for trailer information. Only tow vehicle information is required. I recommend you go to the settings page and select FAQ on the menu. I'm sure you will find the answer there, specifically question one and two. In summary, whatever percentage you select is the max towing capacity, just as the headings are written, "Max 5th Wheel Towing" and Max Conventional Towing." If the trailer's GVWR is more than the max towing capacity for the pin or tongue weight percentage you select to use, then you shouldn't be towing that trailer. After learning this, how can I write the current instructions better? Please email me.

Does not work

mad purchacer

Do not waste your money it does not work friend and I used it and no matter what u put it it says you are over your gvw even at 100 lbs don’t wast money like we did

Developer Response

If you followed the detailed instructions and entered the correct required information, there could not possibly be any mistake. This app has successfully processed over 200,000 reports without any error. All known problems to date have been operator headspace (user error). You are welcome to email me for help.



If you reduce your vehicles weight to 3000 it tells you ok to tow 9000 pounds. Do not rely on this app. Wasted two dollars but this app is useless.

Developer Response

Your review is vague. Please send an email providing a full description of your app entries and explain how the app appeared useless. There have been over 200,000 successful app uses since the original app.


Dave Gray
23.7 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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