# Southwire® Conduit Fill Calc vs Panel Tracker

The clearest difference is rating: Southwire® Conduit Fill Calc at 4.5 against Panel Tracker's 1.0. Southwire® Conduit Fill Calc also leads on update cadence (monthly vs every 15 months) and ratings volume (746 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Southwire® Conduit Fill Calc holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Southwire® Conduit Fill Calc has 746 ratings behind it against 1, so its average is the more settled of the two.

Southwire® Conduit Fill Calc ships an update monthly, Panel Tracker every 15 months. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Southwire® Conduit Fill Calc | Panel Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (746 ratings)](https://appshunter.io/ios/app/southwire-conduit-fill-calc/id509204523/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/panel-tracker/id6692633713/reviews) |
| Number of ratings | **746** | 1 |
| Positive reviews | 70.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 15 months |
| Monetization | Free | Free |
| Size | 19 MB | 25 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Southwire Company](https://appshunter.io/developer/440338423) | [Rooted Software](https://appshunter.io/developer/1633939445) |

## What reviewers say

### Southwire® Conduit Fill Calc

[App page](https://appshunter.io/ios/app/southwire-conduit-fill-calc/id509204523)

This tool assists electricians, engineers, and contractors in determining the correct conduit size based on NEC guidelines. It calculates conduit fill percentages and jam probability, saving time compared to manual calculations.

**Highlights:** Conduit size calculation, NEC fill percentages, Jam probability, Email results, Quick navigation

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Quick and easy calculations
- 👍 User-friendly interface with spin wheel controls
- 📊 Shows actual fill percentage and NEC compliance
- 🔧 Ability to add multiple wire sizes simultaneously
- 💾 Customizable wire data entry

**What reviewers complain about**

- ⚠️ Accuracy issues reported by multiple users
- ❌ Limited wire gauge options (missing 16 & 18 AWG)
- 🔄 Changing conduit type erases conduit size
- 📉 Jam probability calculations unreliable
- 🗑️ No data persistence between calculations

**Reported bugs**

- Blank white screen on app launch
- Conduit size data erased when changing conduit type
- Inaccurate fill calculations compared to NEC standards
- Jam probability calculations not accurate
- App crashes and fails to display results

**Requested features**

- Add 16 & 18 AWG wire sizes
- Include bare solid copper and other conductor types
- Save calculation history/results
- Voltage drop calculator
- Maximum wire count per conduit type calculator


### Panel Tracker

[App page](https://appshunter.io/ios/app/panel-tracker/id6692633713)

Organize your electrical panel by labeling breakers with custom notes. Get an instant overview and share your panel layout easily. Data is stored locally for privacy, with optional syncing.

**Highlights:** Custom breaker labels, Detailed notes for each breaker, Instant panel overview, Customizable to panel size, Effortless sharing, Secure local storage

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Southwire® Conduit Fill Calc free?

Southwire® Conduit Fill Calc is free to download, with no in-app purchases.

### Is Panel Tracker free?

Panel Tracker is free to download, with no in-app purchases.

### Which has better reviews, Southwire® Conduit Fill Calc or Panel Tracker?

Southwire® Conduit Fill Calc is rated higher. Southwire® Conduit Fill Calc averages 4.5 out of 5 from 746 ratings, while Panel Tracker averages 1.0 from 1 ratings.

### Do Southwire® Conduit Fill Calc or Panel Tracker have ads?

Neither Southwire® Conduit Fill Calc nor Panel Tracker shows ads.

### Which is updated more often, Southwire® Conduit Fill Calc or Panel Tracker?

Southwire® Conduit Fill Calc ships an update monthly, and Panel Tracker every 15 months. Most recently, Southwire® Conduit Fill Calc was updated on October 13, 2026 and Panel Tracker on October 6, 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.*