DHC vs M19 Lab
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
DHC
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BTW350 is a wireless battery & electrical system tester controlled by DHCโs applications. It also comes with an automatic battery monitor and saves the results into the built-in calendar. Furthermore, BTW350 supports the DHC cloud data management service as well. Features: 1. Battery Monitor Real-time battery monitoring and sends out notification automatically. 2. Battery, Cranking, & Charging system tester 12V battery / 12V START-STOP battery test / 12V & 24V cranking/charging system test / 3. Start/Stop Battery Test Available Performs accurate test for Start/Stop batteries. 4. Graphical User Interface The interactive interface makes the operation easier and provides the test results clearly. 5. Vehicle & Battery Info Available Supports VIN & Battery S/N scan 6. Customer & Shop Info Available Capable of editing & saving customer & shop info. 7. Calendar Easily identifies which and when that the test has been performed from the calendar. 8. Remote Control via Applications All the test procedures are remotely controlled by the iOS application. 9. Share Test Results Capability Test results could be share via communication applications or email 10. Cloud Data Management Capability Supports DHC cloud data management service 11. Field Upgrade Upgrades the BTW350 via DHC applications. 12. Name the Tester Able to name different testers to easily identify multiple BTW350 testers. 13. Group Test Capability Able to perform group/batch battery test.
M19 Lab
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The M19 labs vision is to continue to grow and challenge convention through our pioneering spirit, scientific advancements, forward-thinking leadership, and collaborative approach to providing exceptional material testing support in the many diverse industries that we serve.
Screenshots
Verdict
The clearest difference is update cadence: M19 Lab at monthly against DHC's every 4 months. DHC's advantage is iOS requirement (11.0 vs 14.5). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
DHC ships an update every 4 months, M19 Lab monthly. The most recent releases landed on September 9, 2026 and June 7, 2026 respectively.
| Parameter | DHC | M19 Lab |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Monthly โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod โ better |
| Requires iOS | 11.0 โ better | 14.5 |
| Further details โ not scored | ||
| Size | 80 MB | 71 MB |
| Age rating | 4+ | 17+ |
| Developer | DHC Specialty Corp. | Friendly It Solution |
In-app purchases
DHC
No in-app purchases
M19 Lab
No in-app purchases









