Comparison

PowerProbe vs DirectLoader

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

Head to head
About

PowerProbe

This app connects to a circuit tester for advanced vehicle electrical diagnosis. It displays real-time readings, offers an oscilloscope mode for intuitive curve visualization, and provides diagnostic functions like voltmeter and resistance testing. Users can also save and share data, and access learning videos.

Highlights
  • Real-time circuit readings
  • Oscilloscope mode
  • DC and AC voltmeter
  • Resistance testing
  • Fuel-injector test mode
  • Data saving and sharing
  • EZ Learning videos
Features
Read full description

With the PowerProbe app users can get connected to the PowerProbe Maestro, which is a last generation circuit tester used to develop electrical diagnosis in the vehicles. The PowerProbe app shows the same readings that can be seen in the Maestro display, as well as carry out additional functions, as oscilloscope mode which allows to see different curves on the smartphone or tablet display in real time, being much more practical and intuitive than the numerical results. Maestro is the top of our professional tool range develop for an advance vehicle diagnosis. With powerful multimeter functions, advanced diagnostic modes, easy to read LCD display, and a new rugged dust and water resistant housing, the Maestro has been designed to give years of trouble free testing. Moreover, the PowerProbe app expands the tool capabilities and give the user access to answers that are required. Using the PowerProbe app, users can get the most out of the circuit tester Maestro.The following are the functions that can be displayed on the PowerProbe app: • DC voltmeter with the capability of applying battery supplied voltage or ground • AC voltmeter: TRMS, peak-to peak /min/max, frequency, duty cycle • Resistance testing with a live or unloaded circuit • Fuel-injector test mode • EZ Learning videos teach the end-users how to complete the most common applications Besides those functionalities, the PowerProbe app gives the users additional value, such as data register, allowing the user to save the readings in the smartphone or tablet internal memory and share readings with other people in an easy and quick way. Another of the great functions of the app is the oscilloscope mode, which allows to see the curves on the smartphone or tablet display in real time, being much more practical and intuitive than the numerical results. Using the oscilloscope mode, users can realize much easier about the performance of the vehicle, than using the numerical results that can be seen on the Maestro.

About

DirectLoader

This app allows authorized installers to wirelessly flash and program select remote start and security systems. It provides access to vehicle wiring databases, installation guides, and technical updates for DIRECTED by VOXX products.

Highlights
  • Wireless flashing for DS4/DS4+ modules
  • Wired/Wireless flashing for DBALL2, DB3, DS3/DS3+ modules
  • Wired/Wireless 'Bitwriter' programming
  • DirectWire vehicle wiring database access
  • Installation guides and technical news
  • SmartStart activation
Features
Read full description

DirectLoader App – Wirelessly flash and program select DIRECTED by VOXX Remote Start & Security systems. “For Installers, By Installers” At DIRECTECHS, our motto is “For Installers, By Installers.” We are committed to supporting installation technicians with our decades of technical experience, unrivaled passion, and dedication to the industry. Note: This app is intended for use only by authorized DIRECTED by VOXX Dealers and Distributors. Login credentials are required to access DIRECTECHS resources, which include the DirectWire vehicle wiring and information database, installation guides, online training, tech tips, and much more. With the DirectLoader APP, along with the DLOADER4, you can flash and program our analog and digital products, including many legacy products, along with mobile access to the following features and functions: • Wirelessly flash DS4/DS4+ modules (DLOADER4 not required) • Wired/Wireless flashing for DBALL2, DB3, DS3/DS3+ modules (DLOADER4 required) • Wired/Wireless ‘Bitwriter’ programming for supported analog systems (DLOADER4 required) • DirectWire Access • Installation Guides • Technical News Alerts and ‘Vehicles Added’ updates • DIRECTED by VOXX SmartStart Activation

Screenshots

PowerProbe4 screens
DirectLoader4 screens

Verdict

The call

The clearest difference is rating: DirectLoader at 3.4 against PowerProbe's 2.6. PowerProbe's advantage is iOS requirement (12.0 vs 15.6). On price, review sentiment, ratings volume and update cadence 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.

ReceptionRating · Positive reviews · Number of ratings

DirectLoader holds the better App Store score, 3.4 against 2.6. Both are backed by a comparable volume of ratings — 7 and 5 respectively. Written reviews split almost evenly too, at 50% and 50% positive.

UpkeepUpdate frequency

PowerProbe ships an update every 4 months, DirectLoader every 3 months. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 8 level
PowerProbe versus DirectLoader: the parameters behind the verdict, then further details
ParameterPowerProbeDirectLoader
PriceFreeFree
Rating2.6 (7 ratings)3.4 (5 ratings) — better
Positive reviews50.0% of reviews50.0% of reviews
Number of ratings7 — better5
Update frequencyEvery 4 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15.6
Further details — not scored
Size37 MB23 MB
Age rating4+17+
DeveloperMGL APPA CORPORATIONVOXX Electronics Corp

Customer experience

PowerProbe

All ratings6 ratings
Positive16.7%
Neutral16.7%
Negative66.7%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

DirectLoader

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

PowerProbe

No in-app purchases

None

DirectLoader

No in-app purchases

Questions

Is PowerProbe free?
PowerProbe is free to download, with no in-app purchases.
Is DirectLoader free?
DirectLoader is free to download, with no in-app purchases.
Which has better reviews, PowerProbe or DirectLoader?
DirectLoader is rated higher. PowerProbe averages 2.6 out of 5 from 7 ratings, while DirectLoader averages 3.4 from 5 ratings.
Do PowerProbe or DirectLoader have ads?
Neither PowerProbe nor DirectLoader shows ads.
Which is updated more often, PowerProbe or DirectLoader?
PowerProbe ships an update every 4 months, and DirectLoader every 3 months. Most recently, PowerProbe was updated on October 7, 2026 and DirectLoader on October 10, 2026.

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