# RV Tow Check — Accurate Car Towing Capacity > Accurate vehicle towing capacity calculator for RVs and trailers. (iPhone/iPad app by Dave Gray.) - Source: https://appshunter.io/ios/app/rv-tow-check/id1232539021 (this page in markdown: same URL + `.md`) - Developer: [Dave Gray](https://appshunter.io/developer/1182518259) - Category: Utilities, Travel - Price: $3.99 - Rating: 1.90/5 from 35 App Store ratings · 18 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 43 MB - Languages: American English - Released: 2017-05-06 - Data updated: 2026-09-02 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/rv-tow-check/id1232539021/reviews.md ## What is RV Tow Check? 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. ## Key features - Towing capacity calculator - Complies with SAE J2807 - Supports fifth wheel, gooseneck, and bumper pull trailers - Customizable weight inputs - Beginner and expert modes - Instant max towing capacity results ## Recent user reviews (10 of 18) All indexed reviews: https://appshunter.io/ios/app/rv-tow-check/id1232539021/reviews.md ### 4/5 — Good app, lots of potential… *2022-09-30* Solid base. If it showed the calculated amounts, differences, it would help in purchasing new equipment. I’d like to be able to enter my truck info and see my max safe travel trailer amounts. **Developer response:** Thank you for your interesting feedback. I'm not sure what you are explaining. Anyone who enters the app's four required weight information should only be from the tow vehicle's specifications. Once the correct info is entered, app users will see max towing weight results for fifth wheel and conventional trailer towing. The results is based on the user's selected pin or tongue weight percentage. All this is thoroughly explained in the app. ### 1/5 — Truly useless *2021-09-28* This “app” could be done with a simple spread sheet. Don’t waste your time or money trying to figure it out. **Developer response:** Developing a spreadsheet was the beginning of the app creation. However, to date, I have not seen anyone else publish a spreadsheet as accurate as the RV Tow Check app. Apparently, GM recognized the RV Tow Check app value by creating a Trailering Information label that is tailored to work perfectly with the app. For you to assume that everyone knows all the required formulas to calculate realistic vehicle towing capacity is absurd. If you would like to discuss your pretentious response more, please email me at info@RVtowCheck.com. ### 1/5 — Waste of $1.99 *2021-01-21* Does what it says it does, but so does a simple calculator. Save you money. I lost mine. Yes - I read the directions and watched to video. Should be an area to enter your RV specifics. **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. I am glad you recognize the app “Does what it says it does.” However, would it not be a bit presumptuous to believe that everyone else knows all four of the calculation methodologies required to achieve a realistic vehicle towing capacity while considering the various pin or tongue weight possibilities? I am glad you know the calculations. If anything, the RV Tow Check app proved your work--is that really a lost investment? There is no need to enter any details about RV specifics when only considering the tow vehicle’s realistic vehicle towing capacity. The important thing is knowing the tow vehicle’s capabilities with various pin or tongue weight percentages selected by the user. Entering RV info does not matter here. I will gladly answer any questions when you email me at info@RVtowCheck.com. ### 2/5 — Waste of $1.99 *2020-12-18* 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. ### 5/5 — If you understand vehicle weights...it works great! *2020-08-28* 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. ### 3/5 — The app works *2020-02-11* As the title says, the app works. The developer says the results are based on math. I’ve been towing RV and boat trailers for over 15 years. The results the app gives seem to be accurate, and checks out with the math I’ve done on my own with a spreadsheet. As other reviewers have noted, the app asks for trailer gross weight - which is the safe way of going about the calculation - but not the best way. Many inexperienced RVers don’t know if they’ve overladen their trailer and/or their tow vehicle. My advice for those beginner RVers is to go to the local truck stop and weigh your tow vehicle by itself with a full tank of fuel and nothing else and no one in it. Then weigh the trailer - again with nothing in it except for a full tank of fresh water and propane. Then, load up the tow vehicle and trailer as if actually going on a trip with full fresh water, propane, food, clothes, toiletries, kitchen equipment, etc. Then use this app with the proper ratings found in your tow vehicle and trailer loading stickers and literature. Before I get blasted by the developer, I acknowledge the app allows for input of variable weights such as passengers and all the camping stuff someone might want to bring with them. However, these numbers can only really be estimated unless you know all of those items’ weights. I’m certainly not going to weight them all individually and add the weights together. I’m going to do what I suggested in the paragraph above and let the scale at the local truck stop do it all at once. That said, I’m not certain this app is useful for advanced users. Advanced users (people who tow trailers and care about their tow vehicle’s capabilities vs trailer weight), like me, have probably figured out how to calculate these results themselves - if they cared to know. Additionally, a user is likely going to actually use this app perhaps once per tow vehicle/trailer pair. I can see why beginners have a tough time with the app. It’s not because the app is faulty, because as the developer says: “it’s math.” It’s probably due to the app user’s unfamiliarity with the terms, and/or where to find the required weight data for tow vehicle and trailer, and/or mistakenly inputting the wrong data in the wrong field in the app. This is why the developer’s responses to negative reviews read something along the lines of “the primary reason for the negative review is because the user fails to <>.” Unfortunately, this acetic response probably doesn’t endear the developer to new users trying to do the right thing by trying to understand how to tow within safe tow margins for their vehicle. Is this app a waste of money? I suppose it depends on if you’re an advanced user (experienced RVer) or not, or if you tow more than one combination of tow vehicle/trailer frequently to get more than one or two uses out of it. I personally will likely never use it again because it doesn’t tell me anything I didn’t already know about my truck and trailer and their weight relationships. Three stars for doing what the app says it does (math) and being mostly thorough. If it were useful beyond a handful of individual uses, I’d give it 5 stars. **Developer response:** Thank you for your thorough review. However, no, the app does not ask for the “trailer gross weight.” The app asks nothing about a trailer to be towed. Your information about weighing the truck and trailer is helpful, but that is not what this app is about. RV Tow Check is all about the tow vehicle only to assist the owner in knowing the realistic vehicle towing capacity. No, the app does not ask the owner to estimate anything. The app encourages the owner to weigh their vehicle. A new vehicle buyer is unlikely to have the opportunity to weigh the vehicle. Therefore, he or she is left only to use the published curb weight. All this is explained in the “Beginner Mode.” What is frustrating for me, is this app was available as a free web-based app for nearly five years. At the end of the last year, it was a free web-based app, I made it into the current mobile app which is identical. In the last year of the web-based app, 84,429 calculations were processed. During the development process and improvements of the web-based app, only a handful of people emailed me for clarification. Before I released the current app, I had a team of 14 volunteers, and they provided valuable feedback. I provide FAQ and an instructional video. Not one of the individuals who wrote reviews at the app stores have contacted me directly and provided any valuable information to help me better understand their negative review. I ask you; did you use the app in “Beginner’s Mode? Did you read through the FAQ or watch the video indexed in the FAQ. Will you email me and provide any suggestions on how I can improve the instructions? (info@rvtowcheck.com) I have no problem in making improvements but if people don’t share precisely what the failure is, there’s not a whole lot I can do about it. Considering the app is approaching 6,500 sales across two platforms, a handful of negative reviews has not made much difference. Would I like to eliminate the negative reviews? Yes. But these reviewers have some responsibility too. ### 1/5 — Red, yellow, greens misleading *2020-02-03* The developer is implying that only 22 to 25 percent 5th wheel hitch weight percentage is safe while 15 percent is complexly unsafe. SAE J2807 uses 15 percent for testing. The safe range is 15 to 25. Below or over that is where warnings should be. After reading the developer response I stand by my assertion. Most people take the colors of red, yellow, and green as safety indicators with green being safe and red being unsafe. The implication of the app is that towing at 15% pin weight an unsafe towing situation. If the tow vehicle’s GVWR is not exceeded by the pin weight and additional cargo and the GCWR and/or the mfg tow rating not exceeded 15% pin weight is safe. **Developer response:** No sir, I am not imply anything like that. If you had read the info shown in beginner's mode you would have read this: "The red, yellow and green zones are safety guidelines for when you do not know the loaded trailer's pin weight (PW) or tongue weight (TW) percentages." Most people have no idea what the real pin weight of a trailer will be before purchase. The app provides max realistic vehicle towing capacity for each percentage selected. Those who wish to ensure their tow vehicle will most likely not be overloaded, they will select a percentage in the green zone and not purchase a trailer with a GVWR greater than the selected percentage on the app. Furthermore, additional info may be read on the app's FAQ page. ### 1/5 — Don’t waste time *2019-11-19* As has been stated the App is a waste of time and money. If you Want info go to J2809 for a specific vehicle. May not be perfect But consistent between vehicles. **Developer response:** I'm sorry to read that you feel the app is a waste of money. It would be extremely helpful for you to email me with your concerns and provide expansive detailed information. The vast majority of RVTC app users (more than 200K) disagree with you but I would welcome to read your complaint. BTW: J2809 has nothing to do with weight safety. ### 5/5 — Great App *2019-09-16* 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 ### 1/5 — Complete crap *2019-05-25* This app calculates a 5000 pound 5th Wheel trailer as max for my Ram 2500 6.7 diesel. Unbelievable! Reading the FAQ it’s obvious the developer calculates for his liability potential!!! **Developer response:** Well, sir, your assumptions are not founded in truth. I don't know what you entered into the app. You and everyone is encouraged to email me for answers to those things you think are incorrect. Math does not lie. However, people do make entry errors. Did you make an entry error? A factual answer takes just a few minutes as soon as you provide the entry details. ## Frequently asked questions about RV Tow Check ### What is the price of RV Tow Check? RV Tow Check is a paid application priced at $3.99. This one-time purchase provides access to all its features for calculating towing capacities. ### How accurate is RV Tow Check? RV Tow Check is designed for 100% accuracy based on the input data provided by the user. The app's calculations conform to manufacturers' weight safety warnings and warranty requirements. ### What weight inputs does RV Tow Check require? RV Tow Check requires four weight inputs from the tow vehicle: Gross Combination Weight Rating (GCWR), Gross Vehicle Weight Rating (GVWR), Gross Vehicle Weight (GVW), and Trailer Weight Rating (TWR). ### Does RV Tow Check support different trailer types? Yes, RV Tow Check displays realistic vehicle towing capacity for fifth wheel, gooseneck, and conventional (bumper pull) trailers simultaneously. ### Can I adjust for extra cargo and passenger weight in RV Tow Check? Yes, users can include any additional unscaled weight for cargo, aftermarket equipment, and passenger weight. The app does not assume standard weights for passengers. ### What are the operating modes in RV Tow Check? RV Tow Check offers two modes: Beginner and Expert. Beginner mode provides detailed step-by-step instructions, while Expert mode offers a streamlined single-page calculator for experienced users. ### On which devices can I use RV Tow Check? RV Tow Check is available for iPhone, iPad, and iPod devices. It is suitable for users who own or are considering purchasing a tow vehicle. ### How often is RV Tow Check updated? The latest version of RV Tow Check is 1.1.2, last updated on April 15, 2021. While not frequently updated, the core functionality remains relevant for towing calculations. ## Version history (last 4 releases) ### 1.1.2 — 2021-04-15 Updated the app to meet current iOS requirements. The app is now formatted for iPhone and iPad devices. Improved instructions. ### 1.1.1 — 2017-05-24 This app has been updated by Apple to display the Apple Watch app icon. Minor edit correction. ### 1.1 — 2017-05-23 Added reset button in Expert Mode. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*