# Ohms Law Calc. vs Enegrin

The clearest difference is in-app purchases: Enegrin at none against Ohms Law Calc.'s 1. Enegrin also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.6). Ohms Law Calc.'s advantage is update cadence (every 2 months vs every 19 months). On price and device support there is nothing between them.

Both are free to download. Ohms Law Calc. sells 1 one-off in-app purchase. Enegrin asks for nothing beyond the download.

Ohms Law Calc. ships an update every 2 months, Enegrin every 19 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ohms Law Calc. | Enegrin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.3K ratings)](https://appshunter.io/ios/app/ohms-law-calc/id491898006/reviews)** | — |
| Number of ratings | **1.3K** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 19 months |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 37 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [CIDTcor](https://appshunter.io/developer/1445069474) |

## What reviewers say

### Ohms Law Calc.

[App page](https://appshunter.io/ios/app/ohms-law-calc/id491898006)

This app provides a comprehensive suite of electrical calculations, including Ohm's Law, voltage drop, wire sizing, and impedance. It also offers numerous converters for various electrical units and parameters, aiding in circuit design and analysis.

**Highlights:** Ohm's Law calculations, Voltage drop calculator, Wire size calculator, Impedance calculations (R, L, C), Electrical unit converters, Power and current conversions, Circuit design tools

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ohms Law Calc. | $3.99 | one-time |

**What reviewers like**

- 🚀 Great value
- 🚀 Works perfectly
- 🚀 Fantastic app
- 👍 Best thing since sliced bread
- 🚀 Useful for electrical work

**What reviewers complain about**

- 👎 Have to pay again for an app already purchased
- 👎 Not easy to use
- 🐛 Paid but not unlocked, no response from developer
- 👎 Annoying pop-ups
- 🐛 Keeps shutting down

**Reported bugs**

- Paid version not unlocking
- Repeatedly prompting for payment after already paid
- Keyboard overlaying results making it difficult to see

**Requested features**

- Add more electrical conversions and calculations
- Add ability to input voltage and resistance to get amps and watts
- Add kVA, rms, and other popular needed conversions


### Enegrin

[App page](https://appshunter.io/ios/app/enegrin/id6463267797)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ohms Law Calc. free?

Ohms Law Calc. is free to download, with in-app purchases available.

### Is Enegrin free?

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

### Do Ohms Law Calc. or Enegrin have ads?

Ohms Law Calc. shows ads; Enegrin does not.

### Which is updated more often, Ohms Law Calc. or Enegrin?

Ohms Law Calc. ships an update every 2 months, and Enegrin every 19 months. Most recently, Ohms Law Calc. was updated on October 29, 2026 and Enegrin on October 24, 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.*