ELMCheck vs ProMaster Dash
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ELMCheck
Verify the authenticity and functionality of your OBD-II scanner. This app runs comprehensive tests on ELM327 commands to report supported features, ensuring safe and reliable use with your vehicle.
- Authenticity testing for OBD-II scanners
- Comprehensive ELM327 command test suite
- Reports actual supported features
- Ensures safe scanner usage
- Basic tests are free
- Unlock full suite with in-app purchase
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Check the authenticity of your OBD-II scanner with ELMCheck. Most OBD-II scanners on the market use some variation of ELM327, but did you know that many scanners use clones of the original ELM327? It can be hard to tell, because these clones will work well enough for basic use but fail in unexpected scenarios. This is where ELMCheck comes in. ELMCheck offers a comprehensive set of test cases that cover the entire documented set of ELM327 commands. Regardless of which version your scanner says it is, ELMCheck can provide a comprehensive report of the features that are actually supported. Get the confidence you need to use your OBD-II scanner on your vehicle safely. ELMCheck is free to run basic tests. An in-app purchase will unlock the full test suite.
ProMaster Dash
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ProMaster Dash turns your phone into a purpose-built gauge cluster for the RAM ProMaster. Connect a Bluetooth OBD2 adapter and see the readings that actually matter on these vans, in a clean, glanceable layout made for the road. Built for ProMaster owners and van builders who want more than a generic scan tool. LIVE GAUGES Transmission temperature, the number every ProMaster owner wants to watch Coolant temp, oil pressure, oil temp, and battery voltage Speed and RPM at a glance Color warning bands you can tune to your own thresholds Gauge Focus, select up to 3 gauges and expand them full screen for easy monitoring on the road TRIP LOGGING Automatic trip recording with distance, duration, and average speed GPS elevation and road grade Detailed per-trip graphs of transmission and coolant temps over time, with climb and descent Export any trip as a GPX file to keep or share MAINTENANCE TRACKING A service schedule tuned for the ProMaster, including severe-duty intervals See what is due, coming up, and overdue at a glance Log your own service history DIAGNOSTIC CODES Read engine trouble codes with plain-language descriptions Clear codes when supported by your vehicle PRIVATE BY DESIGN No account, no sign-up, no ads Everything stays on your device. Your vehicle data and trips are never uploaded. REQUIREMENTS A Bluetooth Low Energy (BLE) OBD2 adapter such as the vLinker MS or a compatible ELM327 BLE adapter, sold separately Plugs into the standard OBD2 port under the dash Transmission temperature readout supports both 6-speed (62TE) and 9-speed (948TE) ProMasters. Other gauges work across model years. ProMaster Dash is an informational tool and is not a substitute for professional diagnosis or a dedicated scan tool. Always confirm important readings with a qualified mechanic, and never interact with the app while driving.
Screenshots
Verdict
The clearest difference is price: ELMCheck at Free against ProMaster Dash's $24.99. ELMCheck also leads on update cadence (every 10 days vs every 3 weeks). ProMaster Dash's advantage is in-app purchases (none vs 1) and iOS requirement (15.1 vs 18). On ads 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
ELMCheck is free to download; ProMaster Dash costs $24.99 up front. ELMCheck sells 1 one-off in-app purchase. ProMaster Dash asks for nothing beyond the download.
ELMCheck ships an update every 10 days, ProMaster Dash every 3 weeks. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.
| Parameter | ELMCheck | ProMaster Dash |
|---|---|---|
| Price | Free — better | $24.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 10 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 18 | 15.1 — better |
| Further details — not scored | ||
| Size | 6 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Fearless design, LLC | Marc Emmons |
In-app purchases
ELMCheck
- Comprehensive testing$2.99
ProMaster Dash
No in-app purchases









