Azuga ELD vs OTR Diagnostics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Azuga ELD
This app provides a certified electronic logging solution for commercial drivers, ensuring compliance with US and Canadian regulations for driving hours and vehicle inspections. It offers a user-friendly tablet interface for accurate record-keeping and regulatory adherence.
- Electronic Hours of Service logging
- FMCSA certified
- Vehicle inspection logs
- US and Canadian regulation compliant
- Tablet-based interface
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Hours of Services is a powerful but easy to use tablet-based service certified with US Department of Transportation Federal Motor Carrier Safety Administration (FMCSA) regulations for electronic logs and vehicle inspections. Regulations for electronic driving and vehicle inspection logs have become commonplace to ensure the veracity of driver tablet input and ensured compliance with regulations. Hours of Service is compliant with federal and state regulations as well as Canadian regulations.
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 review sentiment: OTR Diagnostics at 55% against Azuga ELD's 10%. OTR Diagnostics also leads on rating (4.0 vs 2.7). Azuga ELD'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 2.7. Both are backed by a comparable volume of ratings — 134 and 99 respectively. Written reviews point the same way: 10% of Azuga ELD's written reviews are positive against 55% of OTR Diagnostics's.
Azuga ELD ships an update every 3 weeks, OTR Diagnostics fortnightly. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.
| Parameter | Azuga ELD | OTR Diagnostics |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (134 ratings) | 4.0 (99 ratings) — better |
| Positive reviews | 9.8% of reviews | 55.2% of reviews — better |
| Number of ratings | 134 — better | 99 |
| Update frequency | Every 3 weeks | 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 | 15.6 — better | 17.6 |
| Further details — not scored | ||
| Size | 86 MB | 267 MB |
| Age rating | 4+ | 4+ |
| Developer | Azuga, Inc. | OTR Performance |
Customer experience
Azuga ELD
OTR Diagnostics
User reviews
Azuga ELD
From 134 App Store ratingsWhat we love
- 👍 User interface easy and straightforward
Room to improve
- 😞 Non-existent customer support
- 😞 Unreliable connection to truck
- 😞 Frequent app crashes
- 😞 Poor battery performance
- 😞 Inability to edit logs
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
Bugs and requests
Azuga ELD
Reported bugs
21 issues- App crashes on login
- App crashes on opening
- Randomly puts driver in service non-driving
- Not compatible with iOS 16.0.2
- App won't open after phone update
Show 16 moreShow fewer
- Cannot connect Engine dongle
- Latency issues
- Disconnects
- Incorrect report data
- Freezes and glitches
- Throws driver into 'on duty not driving' when crashing
- 14-hour clock pauses when going off duty
- New updates do not calculate split sleeper berth
- App crashes when selecting Bluetooth device
- Cannot change location
- Location different in personal mode
- App freezes after last update
- Cannot use after update
- Logs itself out frequently
- Needs data to log in
- Movement speed threshold not working
Requested features
8 requests- Ability to edit logs/forgotten punches
- Automatic 'on duty not driving' when stopped
- Bluetooth profile option for iOS
- Beta testing for iOS updates
- One-push nighttime mode
Show 3 moreShow fewer
- Ability to add multiple trailers
- Customer service number
- Movement speed threshold customization
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
In-app purchases
Azuga ELD
No in-app purchases
OTR Diagnostics
No in-app purchases









