# Ohmulator vs Electric Motors Speed Calc

The clearest difference is rating: Ohmulator at 4.7 against Electric Motors Speed Calc's 4.0. Ohmulator also leads on update cadence (every 2 months vs every 26 months) and ratings volume (79 vs 8). Electric Motors Speed Calc's advantage is review sentiment (100% vs 81%). On ads, in-app purchases and device support there is nothing between them.

Ohmulator costs $0.99 and Electric Motors Speed Calc $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Ohmulator holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Ohmulator has 79 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 81% of Ohmulator's written reviews are positive against 100% of Electric Motors Speed Calc's, so the app with the better star average is not the one people write more warmly about.

Ohmulator ships an update every 2 months, Electric Motors Speed Calc every 26 months. The most recent releases landed on October 29, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Ohmulator | Electric Motors Speed Calc |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | **[4.7 (79 ratings)](https://appshunter.io/ios/app/ohmulator/id398901336/reviews)** | [4.0 (8 ratings)](https://appshunter.io/ios/app/electric-motors-speed-calc/id1447766874/reviews) |
| Number of ratings | **79** | 8 |
| Positive reviews | 81.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 26 months |
| Monetization | **Free** | Paid |
| Size | 5 MB | 2 MB |
| Requires iOS | **10.0** | 13 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Armchair Engineering](https://appshunter.io/developer/398901339) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Ohmulator

[App page](https://appshunter.io/ios/app/ohmulator/id398901336)

This electric circuit calculator simplifies Ohm's Law calculations. It allows users to input two known variables (current, resistance, voltage, or power) and automatically computes the unknown values. The app also supports on-the-fly unit adjustments, eliminating the need for manual conversions.

**Highlights:** Ohm's Law calculations, Calculate unknown variables, Adjustable unit types, Total resistance calculator, Supports Voltage, Current, Resistance, Power

**Features:** Vision Pro support

**In-app purchases:** none


### Electric Motors Speed Calc

[App page](https://appshunter.io/ios/app/electric-motors-speed-calc/id1447766874)

This physics calculator quickly determines electric motor power, torque, or speed. It supports various units, offers instant calculations with copyable results, and includes reference formulas. Optimized for everyday use, it's a lightweight tool for engineers and hobbyists.

**Highlights:** Instant calculations, Copyable results, Included formulas, Supports 16 decimal places, Multiple unit support, Lightweight and optimized

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

**In-app purchases:** none


## Frequently asked questions

### Is Ohmulator free?

Ohmulator costs $0.99, with no in-app purchases.

### Is Electric Motors Speed Calc free?

Electric Motors Speed Calc costs $2.99, with no in-app purchases.

### Which has better reviews, Ohmulator or Electric Motors Speed Calc?

Ohmulator is rated higher. Ohmulator averages 4.7 out of 5 from 79 ratings, while Electric Motors Speed Calc averages 4.0 from 8 ratings.

### Do Ohmulator or Electric Motors Speed Calc have ads?

Neither Ohmulator nor Electric Motors Speed Calc shows ads.

### Which is updated more often, Ohmulator or Electric Motors Speed Calc?

Ohmulator ships an update every 2 months, and Electric Motors Speed Calc every 26 months. Most recently, Ohmulator was updated on October 29, 2026 and Electric Motors Speed Calc on October 5, 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.*