Comparison

NGM Flasher vs simos.app

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

NGM Flasher

Read full description

The revolution in vehicle tuning: The world's first app specifically for performance models from VW, Audi, SEAT, Škoda, 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

About

simos.app

This tool provides diagnostic, data logging, and flashing capabilities for VAG petrol engines with specific Simos ECUs. Monitor real-time engine parameters, analyze recorded sessions with graphs, and update your ECU with stock or custom tunes.

Highlights
  • Real-time ECU parameter monitoring
  • Live data logging via Bluetooth LE
  • ECU identification (software/calibration IDs)
  • Multi-channel graph analysis of logged sessions
  • ECU and TCU flashing (stock and custom tunes)
  • Support for Simos 18.x and 12.1 ECUs
Read full description

simos.app is a diagnostic, data logging and flashing tool built specifically for VAG petrol engines running Simos 18.1, 18.2, 18.6, 18.10 and Simos 12.1 ECUs. The platforms found in most modern TSI and TFSI engines across Audi, VW, Škoda, SEAT, Cupra and Porsche. LIVE DATA LOGGING Read ECU parameters directly in real time. Monitor boost pressure, injection timing, lambda, temperatures, torque and more at high sample rates over a Bluetooth LE connection. ECU IDENTIFICATION Read software versions, calibration IDs and hardware info straight from the control unit. LOG ANALYSIS Visualize recorded sessions with multi-channel graphs. Spot correlations between parameters without leaving the app. FLASHING Update your ECU and TCU to the latest version for your vehicle or flash a custom tune. Full features available for Simos 18.1/18.10 and 18.6. Flashing stock files or pre-unlocked ecus for Simos 18.2, 18.4, 18.41 and Simos 12.1. –– Built for enthusiasts, tuners and workshops who need more than a generic scan tool. Basic knowledge of ECU diagnostics is recommended. This app is for informational and diagnostic purposes only. Any modifications to vehicle systems are the sole responsibility of the user and must comply with local laws and regulations. –– Bluetooth LE OBD adapter required. Get yours here: https://simos.app/dongle Other compatible adapters: Macchina A0, DIY A0 clone https://github.com/Switchleg1/AMAleg require custom firmware: https://simos.app/dongle/firmware

Screenshots

NGM Flasher4 screens
simos.app4 screens

Verdict

The call

The clearest difference is in-app purchases: NGM Flasher at none against simos.app's 3. simos.app's advantage is iOS requirement (17.6 vs 26.0). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. simos.app sells 3 one-off in-app purchases. NGM Flasher asks for nothing beyond the download.

UpkeepUpdate frequency

NGM Flasher ships an update weekly, simos.app every 6 days. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

Scorecard2 real differences · 7 level
NGM Flasher versus simos.app: the parameters behind the verdict, then further details
ParameterNGM Flashersimos.app
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyWeeklyEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad — betteriPhone
Requires iOS26.017.6 — better
Further details — not scored
Size23 MB6 MB
Age rating4+4+
DeveloperNGM App GmbHTycho Sebastian Holzer

In-app purchases

None

NGM Flasher

No in-app purchases

3 purchases

simos.app

One-time3
  • App VIN Unlock$17.99
  • Wizard: Pops & Bangs - Single Bin$17.99
  • Stage 1 Bin$179.99

Questions

Is NGM Flasher free?
NGM Flasher is free to download, with no in-app purchases.
Is simos.app free?
simos.app is free to download, with in-app purchases available.
Do NGM Flasher or simos.app have ads?
Neither NGM Flasher nor simos.app shows ads.
Which is updated more often, NGM Flasher or simos.app?
NGM Flasher ships an update weekly, and simos.app every 6 days. Most recently, NGM Flasher was updated on October 7, 2026 and simos.app on October 18, 2026.

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