NGM Flasher vs KM eFlash
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
NGM Flasher
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The revolution in vehicle tuning: The world's first app specifically for performance models from VW, Audi, SEAT, ล koda, and Porsche. Developed by engineers - made for true enthusiasts. In the exciting world of the automotive industry, innovations are constantly changing the experience we have with our cars. One of these groundbreaking developments from leading experts and tuning enthusiasts is this tuning app. This app opens up a whole new dimension for vehicle owners to optimize their car's performance, transmission, and sound. Using advanced algorithms and real-time data, we can easily optimize the engine and transmission control unit for improved performance, shifting, efficiency, and sound. Users can customize their engine's performance, creating a customized driving experience. Safety and reliability are our top priority. The developers have implemented various safety features to ensure that the changes do not affect the functionality or safety of the vehicle. Regular updates ensure that the app keeps pace with the latest vehicle models and technological developments. After purchasing the app license and the OBD adapter, plug the adapter into the car's OBD port. Then, connect the iPhone/iPad to the OBD adapter/car. The first flash process takes 20-25 minutes. After that, each flash process takes only 2-3 minutes to switch between the vehicle's original power and all other available power levels, transmission variants, and sound configurations. This creates a unique and exciting experience for the driver! Supported engines: - EA888 gen3 / gen4 - EA855(evo) - EA824 (4.0 TFSI, 5.2 FSI) - EA825 (4.0 TFSI) - EA839 (2.9 / 3.0 TFSI) A complete list of supported vehicles can be found on our website. www.ngmapp.com
KM eFlash
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KM eFlash makes vehicle diagnostics and ECU programming simple and efficient. Use the specially developed KM eFlash OBD2 dongle directly from your smartphone to: * Read, analyze, and clear diagnostic trouble codes (DTCs) * Flash engine and transmission control units * Display and record real-time telemetry data The connection is established conveniently via Wi-Fi, ensuring fast and reliable data transmission. The app can only be used with the KM eFlash OBD2 dongle and a valid user account. For more information, visit: https://www.km-tuning.com
Screenshots
Verdict
The clearest difference is update cadence: KM eFlash at every 3 days against NGM Flasher's weekly. KM eFlash also leads on iOS requirement (16.4 vs 26.0). 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.
NGM Flasher ships an update weekly, KM eFlash every 3 days. The most recent releases landed on September 19, 2026 and September 13, 2026 respectively.
| Parameter | NGM Flasher | KM eFlash |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 3 days โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad โ better | iPhone |
| Requires iOS | 26.0 | 16.4 โ better |
| Further details โ not scored | ||
| Size | 23 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | NGM App GmbH | KM Engineers GmbH |
In-app purchases
NGM Flasher
No in-app purchases
KM eFlash
No in-app purchases









