---
title: "PIER: Ohm's Law Calculator — App Overview"
url: https://marlvel.ai/intel-report/utilities/pier-ohm-s-law-calculator
category: Utilities
developer: Bret Hardman
platforms: ios, android
rating: 4.7 (567 ratings)
pricing: free
report_level: overview
generated: 2026-04-18
last_verified: "2026-04-18T12:25:49.989Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** PIER provides a streamlined, educational approach to electrical calculations with a focus on usability and precision.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Utilities |
| Rating | 4.7 ★ (567) |
| Pricing | free |
| Platforms | iOS, Android |
| Latest Version (iOS) | 1.1 |
| Latest Version (Android) | 46.0 |
| Developer | Bret Hardman |

<!-- SECTION: Summary -->
## What is PIER: Ohm's Law Calculator?

PIER is a utility app designed to assist users in calculating voltage, current, resistance, and power using Ohm's Law. It features an interactive Ohm's Law wheel interface that helps users visualize and learn the underlying formulas while providing both simplified and precise calculation results.

<!-- SECTION: Key Features -->
## Key Features

- **Interactive Ohm's Law Wheel**: A visual interface that allows users to select formulas and input two variables to solve for the remaining values.
- **Dual-Value Output**: Displays both a simplified answer and a precise value, with the ability to copy either to the device clipboard.
- **Metric Toolbar**: Enables users to input values and adjust metric prefixes without manual decimal conversion.

<!-- SECTION: Target Audience -->
## Who is it for?

Students, hobbyists, and professionals requiring quick electrical calculations.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/pier-ohms-law-calculator/id1166009550?uo=4)
- [Google Play](https://play.google.com/store/apps/details?id=com.joelhansen.ohmslawcalculator&hl=en&gl=us)
- [Full Intelligence Report](https://marlvel.ai/intel-report/utilities/pier-ohm-s-law-calculator)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/utilities/pier-ohm-s-law-calculator).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*