Freight Book vs OTR Diagnostics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Freight Book
This app helps truck drivers manage their trips, providing load information, GPS tracking, and audible instructions for pickups and deliveries. Drivers can share trip progress and history effortlessly, eliminating the need for manual updates to stakeholders.
- Create and manage trips
- GPS tracking for progress
- Audible pickup/delivery instructions
- Share trip history
- Load information
- Substantiate detention claims
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Freight Book Inc offers an effortless way for all truck drivers to create their own trips, track their location and progress, view their trip history, and even share their the trip history! Now drivers can hear audible helpful instructions as they arrive to the pickup, delivery. This app allows you to put the phone down and let voice instructions guide you in. No more calling shippers, brokers and consignees with updates on your location. Simply share your link with them and let the app do the check ins. -Trips- **Freight Book provides all of the load information you need to safely and accurately complete your Frieght Book load! **You can better keep track of trips and safely hear instructions: When you arrive at your pre-defined pickup, delivery will read you verbal instructions so you do not have to look at your phone. No more fumbling with your phone while you are driving. Arrive at your location and hear your instructions! -GPS Tracking- ** Freight Book allows you to easily track your trips progress and update load stakeholders with no effort on your part. ** You can quickly enable or disable GPS through the location setting! ** Freight Book provides you with the data to help you substantiate driver detention claims against shippers and consignees and to use GPS to prove on time delivery for guaranteed shipments! -My Trip Button- ** You can easily view and share your trip with anyone with a touch of a button!
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.
Screenshots
Verdict
The clearest difference is rating: OTR Diagnostics at 4.0 against Freight Book's 3.0. OTR Diagnostics also leads on update cadence (fortnightly vs every 14 months) and ratings volume (99 vs 2). Freight Book's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (13.2 vs 17.6). On price, ads, in-app purchases and device support 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 3.0. That said, the two scores are not equally well evidenced: OTR Diagnostics has 99 ratings behind it against 2, so its average is the more settled of the two.
Freight Book ships an update every 14 months, OTR Diagnostics fortnightly. The most recent releases landed on October 11, 2026 and October 15, 2026 respectively.
| Parameter | Freight Book | OTR Diagnostics |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 4.0 (99 ratings) — better |
| Positive reviews | — | 55.2% of reviews |
| Number of ratings | 2 | 99 — better |
| Update frequency | Every 14 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.2 — better | 17.6 |
| Further details — not scored | ||
| Size | 1 MB | 267 MB |
| Age rating | 4+ | 4+ |
| Developer | Freight Book, Inc | OTR Performance |
Customer experience
Freight Book
OTR Diagnostics
Bugs and requests
Freight Book
Not enough reviews yet to summarise bugs or 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
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- 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
Freight Book
No in-app purchases
OTR Diagnostics
No in-app purchases
Questions
Is Freight Book free?
Is OTR Diagnostics free?
Which has better reviews, Freight Book or OTR Diagnostics?
Do Freight Book or OTR Diagnostics have ads?
Which is updated more often, Freight Book or OTR Diagnostics?
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