Torque Source vs PowerProbe
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Torque Source
This utility app assists torque wrench users with two essential calculators for unit conversion and adapter-based torque adjustments. It also provides helpful usage tips and links to additional resources.
- Torque unit conversion calculator
- Torque wrench adapter adjustment calculator
- Usage hints for torque wrenches
- Links to Snap-on resources
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Snap-on “Torque Source” is a convenient resource tool for torque wrench users. This app includes two torque calculators, one for torque unit of measure conversion and another for adjusting the torque wrench setting when using an adapter – and therefore changing the overall length in the horizontal plane from the middle of the handle to the center of the faster. This application also includes torque wrench usage helpful hints and other Snap-on links.
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.
- Real-time circuit readings
- Oscilloscope mode
- DC and AC voltmeter
- Resistance testing
- Fuel-injector test mode
- Data saving and sharing
- EZ Learning videos
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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.
Screenshots
Verdict
The clearest difference is rating: Torque Source at 3.1 against PowerProbe's 2.6. Torque Source also leads on update cadence (every 8 days vs every 4 months) and iOS requirement (7.0 vs 12.0). PowerProbe's advantage is review sentiment (50% vs 14%). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Torque Source holds the better App Store score, 3.1 against 2.6. Both are backed by a comparable volume of ratings — 16 and 7 respectively. Written reviews complicate that: 14% of Torque Source's written reviews are positive against 50% of PowerProbe's, so the app with the better star average is not the one people write more warmly about.
Torque Source ships an update every 8 days, PowerProbe every 4 months. The most recent releases landed on August 19, 2026 and June 5, 2026 respectively.
| Parameter | Torque Source | PowerProbe |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (16 ratings) — better | 2.6 (7 ratings) |
| Positive reviews | 14.3% of reviews | 50.0% of reviews — better |
| Number of ratings | 16 — better | 7 |
| Update frequency | Every 8 days — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 7.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 1 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Snap-on Inc. | MGL APPA CORPORATION |
Customer experience
Torque Source
PowerProbe
In-app purchases
Torque Source
No in-app purchases
PowerProbe
No in-app purchases
Questions
Is Torque Source free?
Is PowerProbe free?
Which has better reviews, Torque Source or PowerProbe?
Do Torque Source or PowerProbe have ads?
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