WireSizer vs SensorCheck™
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WireSizer
This app quickly calculates the correct DC wire gauge needed for any circuit. Simply input voltage, current, and length to determine the optimal wire size, considering voltage drop and ampacity limits. It's suitable for various DC systems up to 60 VDC.
- Instant DC wire size calculation
- Voltage drop percentage selection
- Ampacity limit checks
- Supports various wire types and gauges
- Adjustable for installation conditions
- Materials list for selections
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WireSizer is the fast, accurate, and easy-to-use DC wire size calculator for choosing the correct wire gauge every time. Simply select your DC voltage, current, and total circuit length with flips of your finger. No keyboard required. WireSizer instantly calculates the correct wire gauge for the Voltage Drop percentage you need. WireSizer is ideal for: • Boats and marine electrical systems • RVs, trucks, and cars • Radios and electronics • Solar power and battery-based DC systems • Any low-voltage DC system up to 60 VDC Suitable for both professionals and DIY users. WireSizer automatically calculates the minimum wire size required for your circuit (assuming copper wire), taking Voltage Drop into account for installation and temperature conditions. Results are checked against current-carrying capacity (ampacity) limits to prevent using unsafe undersized wire. Supported values: • Voltage up to 60 VDC • Current up to 500 amps • Total circuit length up to 600 feet or 200 meters • Voltage Drop 1 to 20 percent • AWG wire 18 gauge to 4/0, plus 250 & 300 kcmil • SAE wire 18 gauge to 4/0 • Metric wire 0.75 mm² to 150 mm² WireSizer allows you to fine-tune calculations based on real-world installation conditions: • Engine compartment or other high-temperature environments • Sheathed, bundled, or conduit-run wire • Wire insulation ratings from 60°C to 200°C WireSizer also includes a Materials List so you can record and review all of your wire selections in one place. WireSizer calculates DC wire sizes in accordance with ABYC E-11 (July 2025). For typical low-voltage DC circuits, results generally correspond with ISO 13297:2020. Results are a design aid; final wire selection and installation compliance remain the installer's responsibility. Number and decimal formatting will follow your device's regional and language settings. WireSizer works without an internet connection and contains no ads. Designed exclusively for DC circuits - not for use with AC circuits. Results are a design aid. Final wire selection and installation compliance remain the installer's responsibility. WireSizer will cost you less than the wire scraps you probably throw away at the end of the day.
SensorCheck™
This app allows users to test marine transducers against factory specifications using a connected diagnostic tester. It provides detailed reports on transducer performance and automatically generates warranty information for eligible models.
- Compares transducer performance to factory specs
- Tests traditional and CHIRP-ready transducers
- Reads XducerID® features automatically
- Generates automatic test reports
- Enables warranty information submission
- Supports Bluetooth LE connectivity
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The AIRMAR SensorCheck™ App, paired with the TDT1000 Transducer Diagnostic Tester, compares the performance of a transducer in the field to its original AIRMAR factory specifications. Simply install the SensorCheck™ app on your Bluetooth LE-enabled smart device, connect to the TDT1000, and get started! Accurately test both traditional and CHIRP-ready transducers that operate at frequencies ranging from 10 kHz to 500 kHz. With CHIRP-ready models and any traditional models 1kW and above, the TDT1000 will automatically read XducerID® features, such as transducer model, frequency, part number, serial number, total run time, and maximum internal ceramic temperature. When the test is complete, an IN RANGE or OUT OF RANGE determination is made and test reports are automatically generated. Results can be emailed or texted directly to the boat owner or an AIRMAR technician. SensorCheck™ enables technicians to automatically submit warranty information to AIRMAR. The TDT1000 kit includes test unit, TDT Test block, power supply, break-out box for bare wire transducers and carrying case. Additional OEM Test Cables required (sold separately).
Screenshots
Verdict
The clearest difference is review sentiment: WireSizer at 84% against SensorCheck™'s 0%. WireSizer also leads on rating (4.5 vs 3.8) and ratings volume (226 vs 6). SensorCheck™'s advantage is price (Free vs $4.99) and iOS requirement (12.0 vs 26.0). On update cadence, 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
SensorCheck™ is free to download; WireSizer costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
WireSizer holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: WireSizer has 226 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 84% of WireSizer's written reviews are positive against 0% of SensorCheck™'s.
WireSizer ships an update every 5 months, SensorCheck™ every 3 months. The most recent releases landed on October 5, 2026 and October 13, 2026 respectively.
| Parameter | WireSizer | SensorCheck™ |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.5 (226 ratings) — better | 3.8 (6 ratings) |
| Positive reviews | 83.8% of reviews — better | 0.0% of reviews |
| Number of ratings | 226 — better | 6 |
| Update frequency | Every 5 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Juggernaut Technology, Inc. | Airmar Technology Inc. |
Customer experience
WireSizer
SensorCheck™
Bugs and requests
WireSizer
Requested features
6 requests- AC calculation for higher voltages
- Support for higher DC voltages (e.g., 150VDC)
- Support for AC voltages (e.g., 240VAC)
- Include actual voltage drop on final screen
- More variables like wire ampacity and cables in a bundle
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- Support for longer lengths
SensorCheck™
Not enough reviews yet to summarise bugs or requests.
In-app purchases
WireSizer
No in-app purchases
SensorCheck™
No in-app purchases
Questions
Is WireSizer free?
Is SensorCheck™ free?
Which has better reviews, WireSizer or SensorCheck™?
Do WireSizer or SensorCheck™ have ads?
Which is updated more often, WireSizer or SensorCheck™?
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