First vs DAWN Inspector
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
First
Connect your mobile device to a commercial vehicle's diagnostic port to monitor its health status. Understand fault codes, view vehicle specifications, and track trip data to improve uptime and aid in service and repair.
- Connect to vehicle diagnostic port
- Monitor vehicle health status
- View active and inactive fault codes
- Display vehicle specifications (VIN, ECU info)
- Track trip data (fuel, miles, speed, hours)
- Generate and share vehicle reports
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NEXIQ First-Link™ is an application that provides important features to the drivers and service technicians of commercial vehicles and equipment. These features help the driver connect the mobile device to the diagnostic port; they also monitor the vehicle's health status and increase the vehicle's uptime. If a Check Engine Light is illuminated, the application assists the driver to understand the cause so that he can seek assistance (i.e., service and repair), if needed. Service technicians can utilize the information gathered by the application to aid in vehicle service and repair. Features include: • Faults – Active and Inactive fault codes present at the time of connection are displayed. • Vehicle Specs – Vehicle information including VIN, ECU software and hardware information is displayed. • Life / Trip – Displays trip-specific information related to fuel usage, miles, maximum speed, cruise control speed, hours of operation, etc. • Parameters – Displays parameters specific to the modules on the vehicle (e.g., engine, transmission, etc.) • Report – Generates a session-specific report containing vehicle information (i.e., faults, vehicle specs, parameters, and life/trip information); can be uploaded to the cloud, emailed, etc. • Sharing - Enables the driver to share vehicle information gathered to dispatch, service providers, etc. • OnCommand® Support - Optional feature to allow users to upload health reports to the OnCommand® servers. • Blue-Link Mini firmware update to v1.09, if the adapter has older firmware.
DAWN Inspector
This app connects to your vehicle's network to perform emissions tests. It guides you through a quick, two-minute process to ensure your car meets CARB standards.
- CARB-approved emissions testing
- Vehicle network connection
- Quick 2-minute test completion
- Engine on test initiation
- Hardware attachment required
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DAWN OBD Inspector™ CARB-approved version Attach the hardware to the vehicle network connector, turn on the engine, and open the app. Complete the test within 2 minutes.
Screenshots
Verdict
The clearest difference is rating: DAWN Inspector at 4.0 against First's 2.2. DAWN Inspector also leads on review sentiment (50% vs 17%) and update cadence (every 2 months vs every 5 months). First's advantage is ratings volume (17 vs 2) and iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
DAWN Inspector holds the better App Store score, 4.0 against 2.2. That said, the two scores are not equally well evidenced: First has 17 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 17% of First's written reviews are positive against 50% of DAWN Inspector's.
First ships an update every 5 months, DAWN Inspector every 2 months. The most recent releases landed on November 5, 2026 and November 3, 2026 respectively.
| Parameter | First | DAWN Inspector |
|---|---|---|
| Price | Free | Free |
| Rating | 2.2 (17 ratings) | 4.0 (2 ratings) — better |
| Positive reviews | 16.7% of reviews | 50.0% of reviews — better |
| Number of ratings | 17 — better | 2 |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 128 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Snap-on Inc. | HEM Data Corporation |
Customer experience
First
DAWN Inspector
In-app purchases
First
No in-app purchases
DAWN Inspector
No in-app purchases
