# Trigonometry Help vs Southwire® Conduit Fill Calc

The clearest difference is price: Southwire® Conduit Fill Calc at Free against Trigonometry Help's $1.99. Southwire® Conduit Fill Calc also leads on in-app purchases (none vs 3) and update cadence (monthly vs every 13 months). Trigonometry Help's advantage is review sentiment (91% vs 70%) and rating (4.7 vs 4.5). On ratings volume, ads and device support there is nothing between them.

Southwire® Conduit Fill Calc is free to download; Trigonometry Help costs $1.99 up front. Trigonometry Help sells 3 one-off in-app purchases. Southwire® Conduit Fill Calc asks for nothing beyond the download.

Trigonometry Help holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 482 and 773 respectively. Written reviews point the same way: 91% of Trigonometry Help's written reviews are positive against 70% of Southwire® Conduit Fill Calc's.

Trigonometry Help ships an update every 13 months, Southwire® Conduit Fill Calc monthly. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Trigonometry Help | Southwire® Conduit Fill Calc |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.7 (482 ratings)](https://appshunter.io/ios/app/trigonometry-help/id411415648/reviews)** | [4.5 (773 ratings)](https://appshunter.io/ios/app/southwire-conduit-fill-calc/id509204523/reviews) |
| Number of ratings | 482 | **773** |
| Positive reviews | **91.0% of reviews** | 70.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 21 MB | 17 MB |
| Requires iOS | **10.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Armchair Engineering](https://appshunter.io/developer/398901339) | [Southwire Company](https://appshunter.io/developer/440338423) |

## What reviewers say

### Trigonometry Help

[App page](https://appshunter.io/ios/app/trigonometry-help/id411415648)

This app helps you quickly solve for unknown angles and sides of right-angled triangles. It provides a workings view for understanding the math, a scale drawing of the triangle, and a reference for basic trigonometric formulas. You can input angles in various formats and choose your desired decimal precision.

**Highlights:** Solve right-angled triangles, Workings view for solutions, Scale drawing of solved triangle, Basic trig formulae reference, Multiple angle input formats, Customizable decimal places

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trig Help Premium | $0.99 | one-time |
| Trig Help Premium | $1.99 | one-time |
| Trig Help Premium | $3.99 | one-time |

**What reviewers like**

- 🚀 Quick and easy to use
- 👍 User-friendly interface
- 🔧 Helpful for tradesmen and professionals
- ⚙️ Accurate calculations
- 🔍 Convenient for on-site use

**What reviewers complain about**

- 🔢 Limited to right-angled triangles only
- 🔍 Lacks advanced trig functions
- 🔀 No option to rotate/flip the triangle view

**Reported bugs**

- Inconsistent performance on older devices
- Occasional crashes or freezes

**Requested features**

- Support for irregular triangles
- Ability to show step-by-step workings
- Option to switch between degrees/minutes/seconds and decimal values


### 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


## Frequently asked questions

### Is Trigonometry Help free?

Trigonometry Help costs $1.99, and also offers in-app purchases.

### Is Southwire® Conduit Fill Calc free?

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

### Which has better reviews, Trigonometry Help or Southwire® Conduit Fill Calc?

Trigonometry Help is rated higher. Trigonometry Help averages 4.7 out of 5 from 482 ratings, while Southwire® Conduit Fill Calc averages 4.5 from 773 ratings.

### Do Trigonometry Help or Southwire® Conduit Fill Calc have ads?

Neither Trigonometry Help nor Southwire® Conduit Fill Calc shows ads.

### Which is updated more often, Trigonometry Help or Southwire® Conduit Fill Calc?

Trigonometry Help ships an update every 13 months, and Southwire® Conduit Fill Calc monthly. Most recently, Trigonometry Help was updated on November 10, 2026 and Southwire® Conduit Fill Calc on November 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.*