# Electrical Formulator vs VRF Supervisor

The clearest difference is in-app purchases: VRF Supervisor at none against Electrical Formulator's 1. VRF Supervisor also leads on iOS requirement (12.0 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. VRF Supervisor asks for nothing beyond the download.

Electrical Formulator ships an update every 2 months, VRF Supervisor monthly. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Electrical Formulator | VRF Supervisor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/electrical-formulator/id299749412/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 15.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Freemium | — |
| Size | 16 MB | 48 MB |
| Requires iOS | 18.4 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Suraj Pk](https://appshunter.io/developer/1717382495) |

## 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 |


### VRF Supervisor

[App page](https://appshunter.io/ios/app/vrf-supervisor/id6743691587)

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

**In-app purchases:** none


## Frequently asked questions

### Is Electrical Formulator free?

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

### Is VRF Supervisor free?

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

### Do Electrical Formulator or VRF Supervisor have ads?

Neither Electrical Formulator nor VRF Supervisor shows ads.

### Which is updated more often, Electrical Formulator or VRF Supervisor?

Electrical Formulator ships an update every 2 months, and VRF Supervisor monthly. Most recently, Electrical Formulator was updated on October 6, 2026 and VRF Supervisor on October 11, 2026.

---

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