OTR Diagnostics vs PortPro v2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
PortPro v2
This application helps drayage truck drivers improve communication with their dispatchers. It streamlines operations for efficient logistics management.
- Streamline drayage driver communications
- Improve dispatcher coordination
- Enhance logistics efficiency
- Mobile dispatch management
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PortPro is an app for the drayage truck driver that allows them to streamline communications with their dispatchers.
Screenshots
Verdict
The clearest difference is rating: OTR Diagnostics at 4.0 against PortPro v2's 3.2. OTR Diagnostics also leads on review sentiment (55% vs 31%). PortPro v2's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (15.6 vs 17.6). On price, ratings volume, update cadence and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OTR Diagnostics holds the better App Store score, 4.0 against 3.2. Both are backed by a comparable volume of ratings — 99 and 128 respectively. Written reviews point the same way: 55% of OTR Diagnostics's written reviews are positive against 31% of PortPro v2's.
Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | OTR Diagnostics | PortPro v2 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (99 ratings) — better | 3.2 (128 ratings) |
| Positive reviews | 55.2% of reviews — better | 31.3% of reviews |
| Number of ratings | 99 | 128 — better |
| Update frequency | Fortnightly | Fortnightly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 267 MB | 259 MB |
| Age rating | 4+ | 4+ |
| Developer | OTR Performance | Axle Technologies |
Customer experience
OTR Diagnostics
PortPro v2
User reviews
OTR Diagnostics
From 99 App Store ratingsWhat 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
PortPro v2
From 128 App Store ratingsWhat we love
- 👍 Easy to use
- 👍 Smooth usage
- 👍 Visibility into earnings
- 👍 Real-time notifications
- 👍 Smart navigation with truck routes
Room to improve
- 🔋 High battery consumption
- 🐛 Geofence switching locations
- 🐛 Document scanner unclear
- 🐛 Text/letters miniature
- 🐛 GPS is a joke
Bugs and requests
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 moreShow fewer
- 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
PortPro v2
Reported bugs
26 issues- Geofence switching locations by itself
- Document scanner doesn’t take clear pictures
- Text/letters super miniature
- Location always on even when app closed
- Text and everything expanded, not fitting screen
Show 21 moreShow fewer
- Pictures are invalid
- App is getting worse and harder to use
- High battery drain
- Support is non existent
- Directions routing through bad areas
- Unable to upload multiple pages of documents
- Entered font varies and is super small and faded
- Unable to expand screen
- Requires location services to be 'always on'
- Lazy drivers can hold up progress
- Uploading pdf file only picks one page
- Flag pops up at the bottom blocking next move
- Multiple fake new assignment alerts
- Doesn’t allow drivers to see arrival time
- Doesn’t allow drivers to work in two different transactions at the same time
- Cannot put arrived for load out if doing double move in same port
- App crashes and freezes
- App closes automatically
- No notifications being received
- Automatic route update changes status prematurely
- Submit a load and it doesn’t show up
Requested features
7 requests- Allow drivers to move work orders around
- Copy and paste option for rails bill
- Ability to upload multiple pages of documents
- Option to choose location tracking only when using the app
- Improve notification system
Show 2 moreShow fewer
- Allow drivers to see arrival time
- Allow drivers to work in two different transactions simultaneously
In-app purchases
OTR Diagnostics
No in-app purchases
PortPro v2
No in-app purchases







