WireSizer vs RouteGuard
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.
RouteGuard
This app provides fleet monitoring and detailed marine weather forecasts. It displays ship positions, routes, and planned tracks alongside wind, wave, and pressure forecasts. Fleet performance data, including speed and consumption alerts, is also available.
- Ship positions and routes
- Marine weather forecasts
- Wind, waves, and pressure data
- Fleet performance alerts
- 3D globe navigation
- Real-time decision support
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Revolutionary and visually stunning, RouteGuard App is the spectacular fleet monitoring and -weather app from MeteoGroup. RouteGuard App, based on the most stunning consumer app MeteoEarth, provides ship positions, routes and planned tracks, combined with weather and ocean forecasts. Wind, waves, tropical storms, pressure, global currents and more weather forecasts are at your fingertips. The fleet pop-up labels show alerts for performance on speed and consumption. The fleet overview table and its details tables shows all the data you need: performance, weather, fuel consumption, speeds and distances, reported positions. • Navigate the 3D globe • Zoom in and out and spin seamlessly from place to place • Pause to highlight particular weather conditions and move easily back and forward • Search for you vessels and for the weather forecast for any place on earth The weather forecasts are based on our own weather model: the Nautical MeteoBase, which is the most accurate weather forecast for global marine operations. RouteGuard is a professional service available to MeteoGroup’s customers only and has been developed specifically to support fleet operators in their responsible jobs. With detailed marine weather forecasts in combination with fleet monitoring produced 24/7/365, all those involved in fleet management now have access to real-time decisions support data on the go.
Screenshots
Verdict
The clearest difference is review sentiment: WireSizer at 82% against RouteGuard's 0%. WireSizer also leads on rating (4.5 vs 2.7) and ratings volume (227 vs 3). RouteGuard's advantage is price (Free vs $4.99) and iOS requirement (8.3 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
RouteGuard 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 2.7. That said, the two scores are not equally well evidenced: WireSizer has 227 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 82% of WireSizer's written reviews are positive against 0% of RouteGuard's.
WireSizer ships an update every 5 months, RouteGuard every 3 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | WireSizer | RouteGuard |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.5 (227 ratings) — better | 2.7 (3 ratings) |
| Positive reviews | 81.6% of reviews — better | 0.0% of reviews |
| Number of ratings | 227 — better | 3 |
| Update frequency | Every 5 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad — better | iPad |
| Requires iOS | 26.0 | 8.3 — better |
| Further details — not scored | ||
| Size | 2 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Juggernaut Technology, Inc. | DTN Germany GmbH. |
Customer experience
WireSizer
RouteGuard
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
RouteGuard
Not enough reviews yet to summarise bugs or requests.
In-app purchases
WireSizer
No in-app purchases
RouteGuard
No in-app purchases









