Comparison

E vs Overseer Mobile

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

Head to head
About

E

This app connects wirelessly to an EFI system, allowing users to monitor engine data and adjust various settings like air-fuel ratios and ignition timing. It offers a setup wizard for initial calibration and advanced tuning options for performance optimization.

Highlights
  • Bluetooth ECU communication
  • Live tuning of ECU settings
  • Real-time engine and sensor data monitoring
  • Setup Wizard for base calibration
  • Advanced tuning functions
  • Diagnostic troubleshooting page
  • Vivid gauge displays
Features
Read full description

E-Tuner 4 is Edelbrock's latest exclusive iOS app for the Pro-Flo 4 and EZ Street EFI Systems. E-Tuner 4 communicates with your PF4 or EZ Street ECU via Bluetooth, so you can manage and live-tune a variety of ECU settings such as air-fuel ratios, ignition timing, idle speed, acceleration fuel, or cold start mixture as well as monitor engine and sensor data in real-time wirelessly from your iPhone or iPad. The E Tuner 4 Setup Wizard simplifies your Pro Flo 4 or EZ Street EFI setup by assisting you with selecting the proper base calibration for your specific application. All you need to know is the engine displacement (CID) and camshaft, and kit specifications, and you're good to go! E-Tuner 4 applies a solid base calibration so you can run the vehicle without having to change any tuning settings. But, if you'd like to make changes, E-Tuner 4 offers a selection of "Advanced Tuning" functions to help dial in your calibration and get the vehicle’s performance exactly where you want it. Whether you'd like to run a bit leaner while cruising for improved mileage, or advance timing for more performance, the Advanced Tuning section is there for you. A diagnostic page for troubleshooting purposes is also available. Once you're up and running, feel free to explore E-Tuner 4’s vivid gauge displays to monitor your engine's performance. Unlike other tuning hand-held combos, you can actually use your phone or tablet as a mini-dashboard once you're done tuning. You can also preview E-Tuner 4 without being connected to an Edelbrock EFI System by enabling "Demo Mode." This will allow you to access the app's main features, and interact with pages like the Setup Wizard, Advanced Tuning, and Gauge Displays to get a feel for how E-Tuner 4 functions. *** Warning! *** E-Tuner 4 is only compatible with the Edelbrock Pro-Flo 4 and EZ Street EFI Systems. It is NOT compatible with V1 E-Street, V2 E-Street, or Pro-Flo 3 EFI systems nor does it work with other Edelbrock Legacy EFI Systems. The E-Tuner 4 app supports all iPhones and iPads running iOS 16 and higher at this time. Please check back later for updates

About

Overseer Mobile

Features
Read full description

Discover the power of remote industrial cleaning with Overseer Mobile, the official app from ACS Automated Cleaning Solutions. Connect to your ACS Control Unit to operate robotic tools effortlessly, enhancing safety and productivity in tank cleaning and beyond. With Overseer Mobile, you can: Directly Control Robots: Use an on-screen joystick or connect a game controller for hands-on operation of tools like the Cyclone™ Tank Sweep for solids blending, the Eliminator™ Washdown Cannon for sludge breakdown, and the Orbiter™ Rotating Cleaning Tool for thorough cleaning. Automate Tasks: Create and run custom patterns for unattended usage, reducing downtime and ensuring repeatable high-quality results. Monitor in Real-Time: Access live camera feeds from robotic tools equipped with cameras, allowing you to oversee operations from a safe distance. Capture and Manage Media: Set up recordings, download videos for post-job analysis, and take high-resolution snapshots to document your work. Ideal for industries such as petrochemicals, manufacturing, and environmental services, this app replaces hazardous manual methods with electric, robotic efficiency. Protect your crew, speed up turnarounds, and optimize your cleaning processes. Learn more about ACS Automated Cleaning Solutions at https://automated.cleaning. Supports Bluetooth game controllers for enhanced control.

Screenshots

E4 screens
Overseer Mobile4 screens

Verdict

The call

E and Overseer Mobile are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

E ships an update every 4 months, Overseer Mobile every 5 months. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

ScorecardNo meaningful differences
E versus Overseer Mobile: the parameters behind the verdict, then further details
ParameterEOverseer Mobile
PriceFreeFree
Rating3.9 (24 ratings) — better—
Positive reviews46.2% of reviews—
Number of ratings24 — better—
Update frequencyEvery 4 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size51 MB70 MB
Age rating4+4+
DeveloperEdelbrock CorpACS Automated Cleaning Services Inc.

In-app purchases

None

E

No in-app purchases

None

Overseer Mobile

No in-app purchases

Questions

Is E free?
E is free to download, with no in-app purchases.
Is Overseer Mobile free?
Overseer Mobile is free to download, with no in-app purchases.
Do E or Overseer Mobile have ads?
Neither E nor Overseer Mobile shows ads.
Which is updated more often, E or Overseer Mobile?
E ships an update every 4 months, and Overseer Mobile every 5 months. Most recently, E was updated on November 3, 2026 and Overseer Mobile on November 8, 2026.

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