# GridCalc Pro — Offline Electrical Workspace

> Offline Electrical Workspace (iPhone/iPad app by 响育 陈.)

- Source: https://appshunter.io/ios/app/gridcalc-pro/id6806894191 (this page in markdown: same URL + `.md`)
- Developer: [响育 陈](https://appshunter.io/developer/1802506173)
- Category: Productivity, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: American English, Chinese (Simplified, China), European Spanish
- Released: 2026-09-10
- Data updated: 2026-09-17
- User reviews in markdown: https://appshunter.io/ios/app/gridcalc-pro/id6806894191/reviews.md

## What is GridCalc Pro?

GridCalc Pro is an offline electrical calculation workspace for engineers, electricians, designers, and commissioning teams.

Calculate and review:

• EV charging feeder comparisons and cable screening using your sourced conductor parameters
• Three-phase power, current, and voltage
• Voltage drop with AWG, kcmil, or mm² conductor input
• Transformer load and capacity conversions
• CT and PT nameplate ratios with safety warnings
• Power-factor correction
• Electrical and engineering unit conversions
• PV string/inverter and battery/PCS nameplate pre-checks

Built for work that must be revisited:

• See formulas, intermediate steps, assumptions, and warnings
• Save calculations to favorites, history, and projects
• Search saved work by title, project, values, source, warning, or formula context
• Restore the original inputs instead of keeping only a final number
• Export calculation context and results as PDF
• Work without an account or internet connection
• Use English, Simplified Chinese, or Spanish
• Send supported summaries to a paired Apple Watch

GridCalc Pro bundles no licensed NEC tables. Create a local custom cable pack or import compatible JSON; user-supplied values remain visibly unverified in results, saved records, and PDFs. Built-in values are marked as example data. A calculation report documents inputs and results; it is not engineering approval, a design stamp, inspection acceptance, or a guarantee of code compliance. Always verify real work against the adopted code, authority having jurisdiction, approved drawings, installation conditions, equipment listings, manufacturer instructions, and a qualified professional's review.


## Version history (last 1 release)

### 0.1.0 — 2026-09-11

No release notes.

## More apps by 响育 陈

- [AITalkingKeyboard](https://appshunter.io/ios/app/aitalkingkeyboard/id6748896745)
- [ReplyMate - AI Reply Generator](https://appshunter.io/ios/app/replymate-ai-reply-generator/id6760747682)

All apps by 响育 陈: https://appshunter.io/developer/1802506173

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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 2026-09-17.*