Comparison

SDG Rotor vs SP Grid Viewer

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

Head to head
About

SDG Rotor

This tool helps high-performance vehicle owners ensure the safety of their supercharger rotor RPM. It allows users to input supercharger details and engine RPM for instant safety checks, leveraging expert knowledge in performance vehicles.

Highlights
  • Supercharger rotor RPM safety checks
  • Input supercharger details and engine RPM
  • Instant safety assessments
  • Expertise in high-performance vehicles
  • User-friendly design
  • Supports global units and standards
Features
Read full description

SDG Motorsports Presents: The Ultimate IHI Supercharger Tool Brought to you by SDG Motorsports, this app is the essential companion for Hellcat, Redeye, Trackhawk, Hellephant, and Demon enthusiasts. Guarantee the safety of your supercharger rotor RPM with our precision tool designed for the high-performance vehicle owner. With SDG Motorsports, you get more than just an app; you get a partner in performance and safety. Why SDG Motorsports? • Expertise in Performance: Leveraging SDG Motorsports deep understanding of high-performance vehicles, our app provides unparalleled accuracy in supercharger safety assessments. • User-Friendly Design: Developed by the experts at SDG Motorsports, this app allows you to easily input your supercharger details and engine RPM, offering safety checks in an instant. • Global Standards: No matter where you tune from, SDG Motorsports ensures that our app supports a broad spectrum of units and standards for worldwide accessibility. Your Safety, Our Priority With SDG Motorsports, stay confident in your vehicle’s performance and safety. Download today to ensure your supercharger setup is not just powerful, but also safe. Disclaimer: While SDG Motorsports strives to provide accurate and up-to-date information through our Supercharger Safety Tool, the nature of high-performance vehicles and the variability of modifications mean outcomes can vary widely. As such, SDG Motorsports cannot be held responsible for any damage, loss, or injury resulting from the use of this app. Users are encouraged to proceed with caution and consult with professional tuners or technicians when making significant modifications to their vehicles. This app is intended as a guide only, and reliance on its output is at the user's own risk.

About

SP Grid Viewer

Features
Read full description

Grid Viewer: Your Gateway to Effortless Control Step into the future of remote control technology with Grid Viewer, the ultimate companion app for Grid Studio. Connect seamlessly to the Grid Studio server and unlock a fully customizable interface tailored to your needs. With Grid Viewer, you can: Take control effortlessly: Use dynamic interface elements like buttons, sliders, and dropdowns for precise interactions Stay in the know: Access real-time updates and system reports via sleek, custom dashboards Customize your workflow: Experience an intuitive interface pushed directly to your device for unparalleled convenience Designed for efficiency, flexibility, and real-time interaction, Grid Viewer puts the power of control right into your hands. Download Grid Viewer today and redefine your experience with Grid Studio!

Screenshots

SDG Rotor4 screens
SP Grid Viewer4 screens

Verdict

The call

The clearest difference is update cadence: SDG Rotor at every 2 days against SP Grid Viewer's every 4 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SDG Rotor ships an update every 2 days, SP Grid Viewer every 4 months. The most recent releases landed on October 23, 2026 and October 5, 2026 respectively.

Scorecard1 real difference · 9 level
SDG Rotor versus SP Grid Viewer: the parameters behind the verdict, then further details
ParameterSDG RotorSP Grid Viewer
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 days — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size46 MB83 MB
Age rating+174+
DeveloperStephan MonetteStage Precision GmbH

In-app purchases

None

SDG Rotor

No in-app purchases

None

SP Grid Viewer

No in-app purchases

Questions

Is SDG Rotor free?
SDG Rotor is free to download, with no in-app purchases.
Is SP Grid Viewer free?
SP Grid Viewer is free to download, with no in-app purchases.
Do SDG Rotor or SP Grid Viewer have ads?
Neither SDG Rotor nor SP Grid Viewer shows ads.
Which is updated more often, SDG Rotor or SP Grid Viewer?
SDG Rotor ships an update every 2 days, and SP Grid Viewer every 4 months. Most recently, SDG Rotor was updated on October 23, 2026 and SP Grid Viewer on October 5, 2026.

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