# OhmXact — Electrical calculation tools

> Electrical calculation tools (iPhone/iPad app by Chris Helene.)

- Source: https://appshunter.io/ios/app/ohmxact/id6795690387 (this page in markdown: same URL + `.md`)
- Developer: [Chris Helene](https://appshunter.io/developer/6795690389)
- Category: Utilities, Education
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 21 MB
- Languages: American English, Dutch, French (France), German (Germany), Italian, Japanese, Korean, European Portuguese, Chinese (Simplified, China), European Spanish and 1 more
- Released: 2026-08-13
- Data updated: 2026-10-08

## What is OhmXact?

OhmXact is a fast, local-first electrical calculator and workspace for the workshop, bench and field.

CALCULATE WITH CLARITY
• Series and parallel resistance, Ohm’s Law, power, voltage divider, LED and resistor colour-code tools
• Technician notation such as 4R7, 4k7 and 2M2
• Engineering result formatting and optional calculation details

ORGANISE REAL WORK
Save calculations, measurements and notes in Projects. Use Workshop Library to manage resistor stock and reference values, compare alternatives, and create local PDF reports in the language you choose.

YOUR LANGUAGE, YOUR DEVICE
OhmXact supports 11 app languages. Choose a separate language for PDF reports. No account, ads, analytics or cloud processing: calculations and Projects stay on your device unless you explicitly share or export them.

PRO AND PRO+
One-time purchases unlock advanced electrical, workshop, automotive and EV tools, plus unlimited Projects and professional reporting. Eligible premium editions can also choose alternate app icons.

CAMERA RESISTOR READER (BETA)
Pro+ includes an on-device Beta assistant for resistor bands. Always verify or correct every band before using the result.

IMPORTANT
OhmXact provides calculation and design guidance. Verify results against manufacturer specifications, applicable requirements and professional judgement before installation.

## Is OhmXact safe?

Not enough ratings yet to assess OhmXact.

## Is OhmXact legit?

OhmXact has limited verification signals. The AppsHunter Legitimacy Score for OhmXact is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 2.0.3 — 2026-09-01

• OhmXact now supports 11 app languages, with an independent language choice for PDF reports.
• Personalise Home, manage stock and reference values in Workshop Library, and work faster with improved Projects and comparisons.
• See clearer engineering-format results and optional calculation details.
• Eligible Pro and Pro+ customers can choose alternate app icons.
• Usability and reliability refinements across iPhone and iPad.

### 1.0 — 2026-08-13

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-08.*