Comparison

RepairSolutions2 vs OTR Diagnostics

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RepairSolutions2

This app provides comprehensive vehicle care and repair information for car and truck owners, DIYers, and technicians. It offers diagnostic capabilities with compatible OBD2 scanners and a vast database of verified fixes from ASE Master Technicians. Users can also access free vehicle maintenance information and schedule repairs.

Highlights
  • OBD2 scanner integration
  • Verified repair database
  • Diagnostic trouble code definitions
  • Scheduled maintenance tracking
  • Parts identification and purchase
  • Live data feed
  • Repair scheduling
Currently charting
Read full description

RepairSolutions2 Valuable Vehicle Care and Repair info for car and truck owners, as well as skilled DIYers and entry-level techs. The only complete solution from diagnosis to fix, the latest RepairSolutions2 app seamlessly pairs with the newest generation of compatible OBD2 scanners and dongles to deliver the most comprehensive automotive repair database with verified fixes from ASE Master Technicians. No tool? No problem. Now featuring “no tool needed use,” free Vehicle Care info and an in-app option to schedule repairs. Vehicle Care Info for Anyone (whether you own a tool or not). App users can see warranty status, scheduled maintenance, technical service bulletins, recalls, 5-year cost to own, recalls, layman’s definitions of diagnostic trouble codes, effect on the vehicle, and # of fixes available from the RepairSolutions2 comprehensive repair database. Find the Problem (OBD2 tool and dongle* owners). Download the RepairSolutions2 app for free and connect instantly with your compatible tool to create detailed vehicle diagnostic reports on your mobile device. Find the Fix (OBD2 tool and dongle owners). ASE Master Technicians provide the right solutions for your vehicle’s problem. Receive custom-tailored repair information and verified fixes that are cross-referenced for accuracy against an entire index of vehicles and data collected for over nearly 30 years. Find the Parts. Identify and purchase the right parts (maintenance and repairs) for your specific vehicle instantly from your favorite online retailer. This in-app feature makes it easier and faster to find the right quality parts to get the job done. With the RepairSolutions2 app you’ll be able to: - Lookup DTC Code Definitions – Access to specific, layman’s, effect on vehicle, all paired with ASE-verified fixes at your fingertips. - Complete Vehicle Scan - Perform quick scans (engine only), specific modules, and complete network scan. - Read/Erase DTC codes. - LIVE DATA - Access a customizable LIVE data feed with the ability to choose specific data inputs, create line graphs, record and access previous LIVE data recording sessions. - Scheduled Maintenance - Drive with confidence knowing that RepairSolutions2 provides manufacturer scheduled vehicle maintenance with direct purchase links based on your vehicle’s history and OEM-recommended service items. - Predicted Repairs – Know what repairs might be around the corner using RepairSolutions2 advanced database. - RepairPal - Just click the “Schedule Repair” button, and in just a few easy steps, you can choose the right repair facility at a time that suits your schedule. - No Tool Needed – View vehicle maintenance, predicted repairs, TSB/Recalls, Cost to Own, and Code Definitions! All available even if you do not own a compatible tool. ---- IMPORTANT ---- No purchase required. This app is free for anyone to install. Some app features and functions require pairing with a compatible OBD2 Scan Tool or dongle. Note that not all features and functions are supported by every vehicle. Features and functions will vary by vehicle year, make, and model and are determined solely by the vehicle manufacturer. * A “dongle” is a small adapter that you can plug into the OBD port of a vehicle. This port is usually found on the driver’s side under the dashboard in most cars and trucks.

About

OTR Diagnostics

This app helps heavy-duty truck owners diagnose and resolve common issues like fault codes, regen problems, and derates. It provides plain-language explanations of error codes, allows for bi-directional commands to fix issues, and monitors live truck data to prevent downtime.

Highlights
  • AI-powered fault code explanation
  • Bi-directional commands for repairs
  • Reset active/inactive fault codes
  • Run forced DPF/SCR regens
  • Live data monitoring
  • Fault code history tracking
Features
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OTR Diagnostics — Trusted by 10,000+ Truck Owners Dealing with regen problems, nonstop alerts, fault codes, and unexpected derates on your heavy duty truck? You are not alone. More than 10,000 truck owners and fleets trust OTR Diagnostics to take control, cut downtime, and avoid expensive dealer visits. Powered by OTR Assist + OTR LINK 2 This is more than a scan tool. OTR Assist is your AI partner, breaking down fault codes in plain language and helping you troubleshoot and decide if you can keep driving or need service now. Paired with OTR LINK 2, our proprietary Bluetooth adapter, you get faster connection speeds, more accurate fault code data, and more live data parameters than ever before. It is 5X better than previous hardware. Ask us how to get a FREE upgrade today. Commands That Keep You Moving With bi-directional commands built right into OTR Diagnostics, you are no longer stuck waiting on a shop to do what you can handle yourself. Reset active and inactive fault codes Reset the entire aftertreatment system Reset derates that slow you down Reset soot levels after a DPF service Run forced DPF or SCR regens right from the cab These commands put you back in control, saving you time, money, and downtime. Fault Code Insights Go beyond a flashing dash light. OTR Diagnostics helps you understand fault codes with the same level of detail as dealer software, but in plain language you can actually use. Decode your dash lights Uncover the root causes of issues Track how often a problem occurs Know which repairs or parts are needed Live Data Monitoring Want to know if your regen is working? Want to monitor exhaust temps, soot levels, or DEF? OTR Diagnostics lets you see your truck’s vitals in real time so you can spot issues before they stop you. Common live data parameters include: DPF fluid level DPF soot level EGR valve position Aftertreatment exhaust temps Boost pressure Accelerator pedal position Engine fuel delivery pressure Available live data may vary depending on the engine model your device is connected to. Explore Your History Recurring problems? OTR Diagnostics logs every fault code and command so you can see when issues happened, when they were cleared, and how long regens lasted. Proven. Tested. Backed by Support We run OTR Diagnostics, OTR Assist, and OTR LINK 2 on our own fleet of test trucks including late model Paccar MX engines to make sure everything works before it reaches you. That is why more than 10,000 drivers already trust OTR Diagnostics. Made in Michigan. Built for You We engineer, assemble, and ship right from our shop in Macomb, MI. If you are nearby, stop in and see us. Coverage We support a wide range of heavy duty engines: Cummins: CM871, CM2150, CM2250, CM2350 (2008–2024) Detroit Diesel: DD60, MBE, DD13, DD15, DD16 (2008–2024) Paccar: MX11, MX13 (2011–2024), PX7, PX9 (2008–2024) Volvo: D11, D13, D13TC, D16 (2014–2024) Mack: MP7, MP8, MP8HE, MP10 (2014–2024) For the full list of compatible models, call or text us at 586-799-4375. Need Help or Have Questions? Call or text us anytime at 586-799-4375 or email support@otrperformance.com.

Screenshots

RepairSolutions24 screens
OTR Diagnostics4 screens

Verdict

The call

The clearest difference is rating: RepairSolutions2 at 4.8 against OTR Diagnostics's 4.0. RepairSolutions2 also leads on review sentiment (96% vs 55%) and ratings volume (38K vs 99). OTR Diagnostics's advantage is in-app purchases (none vs 3). On price, update cadence, ads and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. RepairSolutions2 sells 3 one-off in-app purchases. OTR Diagnostics asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

RepairSolutions2 holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: RepairSolutions2 has 38K ratings behind it against 99, so its average is the more settled of the two. Written reviews point the same way: 96% of RepairSolutions2's written reviews are positive against 55% of OTR Diagnostics's.

UpkeepUpdate frequency

RepairSolutions2 ships an update every 3 weeks, OTR Diagnostics fortnightly. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

Scorecard6 real differences · 5 level
RepairSolutions2 versus OTR Diagnostics: the parameters behind the verdict, then further details
ParameterRepairSolutions2OTR Diagnostics
PriceFreeFree
Rating4.8 (38K ratings) — better4.0 (99 ratings)
Positive reviews96.2% of reviews — better55.2% of reviews
Number of ratings38K — better99
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#166 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size192 MB266 MB
Age rating4+4+
DeveloperInnova ElectronicOTR Performance

Customer experience

RepairSolutions2

All ratings37,946 ratings
Positive97.1%
Neutral1.9%
Negative1.0%
Written reviews1,694 reviews
Positive96.2%
Neutral1.1%
Negative2.7%

OTR Diagnostics

All ratings99 ratings
Positive70.7%
Neutral7.1%
Negative22.2%
Written reviews58 reviews
Positive55.2%
Neutral10.3%
Negative34.5%

User reviews

RepairSolutions2

From 38K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Efficient and fast
  • 💡 Helpful diagnostic features
  • 🤑 Good value for money
  • 🔧 Useful for DIY mechanics

Room to improve

  • 🐛 Connectivity issues
  • 🔍 Limited functionality
  • 🕰️ Slow app performance
  • 🔋 Firmware update process

OTR Diagnostics

From 99 App Store ratings

What we love

  • 💰 Saves money on repairs
  • 🛠️ Clears fault codes
  • 🔄 Performs forced regens
  • ✅ Works with various engines
  • 👍 Easy to use

Room to improve

  • 💸 Overpriced
  • 🐛 Buggy and unstable app
  • 🔌 Frequent Bluetooth disconnects
  • 📉 Updates cause problems
  • ❌ Some features disappeared after updates

Bugs and requests

RepairSolutions2

Reported bugs

3 issues
  • Unable to generate reports
  • Bluetooth connection problems
  • Firmware update failures

Requested features

4 requests
  • Ability to save vehicle history
  • Live data monitoring improvements
  • Offline report viewing
  • Expanded diagnostic capabilities

OTR Diagnostics

Reported bugs

10 issues
  • App constantly disconnects from device
  • Generic code option disappeared
  • Forced regen is no longer consistent
  • AI assistant not working
  • App asks to do things not available in app
Show 5 more
  • Bluetooth connection rejects
  • App doesn't work without data connection
  • Forced regen not activating after updates
  • Login authentication errors
  • Cannot start regen process on newer models

Requested features

5 requests
  • Remember email address for login
  • Allow offline functionality without data connection
  • Add option to change speed
  • More detailed diagnostic information
  • Allow basic subscription to work on multiple VINs

In-app purchases

3 purchases

RepairSolutions2

One-time3
  • Vehicle History Report$9.99
  • 1-Month MOTOR Report for 1 VIN$14.99
  • 1-Year MOTOR Report for 1 VIN$29.99
None

OTR Diagnostics

No in-app purchases

Questions

Is RepairSolutions2 free?
RepairSolutions2 is free to download, with in-app purchases available.
Is OTR Diagnostics free?
OTR Diagnostics is free to download, with no in-app purchases.
Which has better reviews, RepairSolutions2 or OTR Diagnostics?
RepairSolutions2 is rated higher. RepairSolutions2 averages 4.8 out of 5 from 38K ratings, while OTR Diagnostics averages 4.0 from 99 ratings.
Do RepairSolutions2 or OTR Diagnostics have ads?
Neither RepairSolutions2 nor OTR Diagnostics shows ads.
Which is updated more often, RepairSolutions2 or OTR Diagnostics?
RepairSolutions2 ships an update every 3 weeks, and OTR Diagnostics fortnightly. Most recently, RepairSolutions2 was updated on September 24, 2026 and OTR Diagnostics on September 23, 2026.

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