# Electrician's Helper vs TVS Diode Array Product Selector

The clearest difference is review sentiment: TVS Diode Array Product Selector at 100% against Electrician's Helper's 48%. TVS Diode Array Product Selector also leads on price (Free vs $12.99) and rating (5.0 vs 4.4). Electrician's Helper's advantage is ratings volume (13 vs 1) and chart position (#98 vs unranked). On update cadence, ads and in-app purchases there is nothing between them.

TVS Diode Array Product Selector is free to download; Electrician's Helper costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TVS Diode Array Product Selector holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Electrician's Helper has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 48% of Electrician's Helper's written reviews are positive against 100% of TVS Diode Array Product Selector's.

Electrician's Helper ships an update every 3 months, TVS Diode Array Product Selector every 6 months. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Electrician's Helper | TVS Diode Array Product Selector |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| Rating | [4.4 (13 ratings)](https://appshunter.io/ios/app/electricians-helper/id339910500/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tvs-diode-array-product-selector/id438716133/reviews)** |
| Number of ratings | **13** | 1 |
| Positive reviews | 47.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#98** | — |
| Size | 29 MB | 8 MB |
| Requires iOS | 26.0 | **8.4** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sam Virgillo](https://appshunter.io/developer/324560825) | [Littelfuse, Inc.](https://appshunter.io/developer/503818127) |

## What reviewers say

### Electrician's Helper

[App page](https://appshunter.io/ios/app/electricians-helper/id339910500)

**Currently charting:** #98 Top Paid · Productivity (US App Store)

This app simplifies electrical work by providing quick access to electrical codes and performing complex calculations for installations. It helps electricians find conductor ampacity, calculate voltage drop, determine box fill, and size raceways, among many other essential functions.

**Highlights:** 3 phase delta and wye circuit calculations, Conductor ampacity lookup (NEC/CEC), Voltage drop calculation, Box fill calculation, Raceway fill and sizing, Motor calculations, Transformer calculations

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

**In-app purchases:** none


### TVS Diode Array Product Selector

[App page](https://appshunter.io/ios/app/tvs-diode-array-product-selector/id438716133)

This app helps you find the right TVS Diode Array for your electronic circuits. It asks a few questions about your application to recommend the best product for ESD and lightning surge protection. You can also request samples and access datasheets.

**Highlights:** Product recommendation based on application needs, Sample requests, View product information and characteristics, Download datasheets, Access design resources

**In-app purchases:** none


## Frequently asked questions

### Is Electrician's Helper free?

Electrician's Helper costs $12.99, with no in-app purchases.

### Is TVS Diode Array Product Selector free?

TVS Diode Array Product Selector is free to download, with no in-app purchases.

### Which has better reviews, Electrician's Helper or TVS Diode Array Product Selector?

TVS Diode Array Product Selector is rated higher. Electrician's Helper averages 4.4 out of 5 from 13 ratings, while TVS Diode Array Product Selector averages 5.0 from 1 ratings.

### Do Electrician's Helper or TVS Diode Array Product Selector have ads?

Neither Electrician's Helper nor TVS Diode Array Product Selector shows ads.

### Which is updated more often, Electrician's Helper or TVS Diode Array Product Selector?

Electrician's Helper ships an update every 3 months, and TVS Diode Array Product Selector every 6 months. Most recently, Electrician's Helper was updated on October 15, 2026 and TVS Diode Array Product Selector on September 30, 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.*