# Electrical Formulator vs NetSure

The clearest difference is in-app purchases: NetSure at none against Electrical Formulator's 1. NetSure also leads on iOS requirement (11.0 vs 18.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Electrical Formulator sells 1 one-off in-app purchase. NetSure asks for nothing beyond the download.

Electrical Formulator ships an update every 2 months, NetSure every 6 weeks. The most recent releases landed on September 26, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Electrical Formulator | NetSure |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/electrical-formulator/id299749412/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 15.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Freemium | — |
| Size | 16 MB | 24 MB |
| Requires iOS | 18.4 | **11.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Vertiv](https://appshunter.io/developer/1288641397) |

## What reviewers say

### Electrical Formulator

[App page](https://appshunter.io/ios/app/electrical-formulator/id299749412)

This app provides a comprehensive suite of electrical calculation tools for design and engineering challenges. It offers hundreds of conversion and calculation options, with features to save, print, and email results. Easily access frequently used and recently accessed formulas, with all calculations automatically stored.

**Highlights:** Over 100 electrical formulas, Save and organize results, Share results via email or print, Access most-used and recent formulas, Supports US/Imperial and metric units, Formula categories for batteries, motors, transformers, and more

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Features For Electrcial | $1.99 | one-time |


### NetSure

[App page](https://appshunter.io/ios/app/netsure/id1522532611)

**In-app purchases:** none


## Frequently asked questions

### Is Electrical Formulator free?

Electrical Formulator is free to download, with in-app purchases available.

### Is NetSure free?

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

### Do Electrical Formulator or NetSure have ads?

Neither Electrical Formulator nor NetSure shows ads.

### Which is updated more often, Electrical Formulator or NetSure?

Electrical Formulator ships an update every 2 months, and NetSure every 6 weeks. Most recently, Electrical Formulator was updated on September 26, 2026 and NetSure on September 17, 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.*