# DC Wire Sizer vs AirmarCAST™

The clearest difference is review sentiment: DC Wire Sizer at 100% against AirmarCAST™'s 25%. DC Wire Sizer also leads on rating (5.0 vs 2.6) and chart position (#194 vs unranked). AirmarCAST™'s advantage is price (Free vs $2.99) and update cadence (every 3 months vs every 20 months). On ads, in-app purchases and device support there is nothing between them.

AirmarCAST™ is free to download; DC Wire Sizer costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DC Wire Sizer holds the better App Store score, 5.0 against 2.6. Both are backed by a comparable volume of ratings — 23 and 5 respectively. Written reviews point the same way: 100% of DC Wire Sizer's written reviews are positive against 25% of AirmarCAST™'s.

DC Wire Sizer ships an update every 20 months, AirmarCAST™ every 3 months. The most recent releases landed on August 24, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | DC Wire Sizer | AirmarCAST™ |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (23 ratings)](https://appshunter.io/ios/app/dc-wire-sizer/id629190351/reviews)** | [2.6 (5 ratings)](https://appshunter.io/ios/app/airmarcast/id1492428585/reviews) |
| Number of ratings | **23** | 5 |
| Positive reviews | **100.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Best chart rank | **#194** | — |
| Size | 21 MB | 112 MB |
| Requires iOS | **9.0** | 16 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dirty Dog Software, LLC](https://appshunter.io/developer/629190354) | [Airmar Technology Inc.](https://appshunter.io/developer/1062316789) |

## What reviewers say

### DC Wire Sizer

[App page](https://appshunter.io/ios/app/dc-wire-sizer/id629190351)

**Currently charting:** #194 Top Paid · Utilities (US App Store)

Calculate appropriate DC wire sizes for electrical projects, preventing equipment damage and fires. Save, edit, and export wire run details for electrical plans and material purchases. Features a wizard for easy sizing for all users.

**Highlights:** Calculates wire size, voltage drop, and ampacity, Supports custom DC voltages up to 500 amps, Save, edit, and export wire run details, Sizer Wizard for easy calculations, Select marine standards (ABYC or ISO), Choose from various wire types and insulation ratings

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### AirmarCAST™

[App page](https://appshunter.io/ios/app/airmarcast/id1492428585)

Configure and calibrate your boat's Bluetooth-enabled multisensors and modules directly from your mobile device. View real-time data on detailed gauges and perform advanced calibrations for speed, temperature, and attitude without extra hardware.

**Highlights:** Bluetooth sensor connection, Real-time data display, Intuitive navigation, Speed, temperature, attitude calibration, On-board GPS speed comparison, Advanced speed calibration wizards

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DC Wire Sizer free?

DC Wire Sizer costs $2.99, with no in-app purchases.

### Is AirmarCAST™ free?

AirmarCAST™ is free to download, with no in-app purchases.

### Which has better reviews, DC Wire Sizer or AirmarCAST™?

DC Wire Sizer is rated higher. DC Wire Sizer averages 5.0 out of 5 from 23 ratings, while AirmarCAST™ averages 2.6 from 5 ratings.

### Do DC Wire Sizer or AirmarCAST™ have ads?

Neither DC Wire Sizer nor AirmarCAST™ shows ads.

### Which is updated more often, DC Wire Sizer or AirmarCAST™?

DC Wire Sizer ships an update every 20 months, and AirmarCAST™ every 3 months. Most recently, DC Wire Sizer was updated on August 24, 2026 and AirmarCAST™ on September 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*