# Star-Delta Calculator

> Star-Delta Calculator (iPhone/iPad app by Siu Yuen Ho.)

- Source: https://appshunter.io/ios/app/star-delta-calculator/id1602175282 (this page in markdown: same URL + `.md`)
- Developer: [Siu Yuen Ho](https://appshunter.io/developer/814088527)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 12.0 · 3 MB
- Languages: English, French, German, Hindi, Italian, Portuguese, Russian, Chinese, Spanish, Chinese
- Released: 2021-12-29
- Data updated: 2026-06-04
- User reviews in markdown: https://appshunter.io/ios/app/star-delta-calculator/id1602175282/reviews.md

## What is Star?

This app provides conversion between star delta electrical networks. 
    
Features
* Convert resistor star network to delta network
* Convert resistor delta network to star network

Pro features
* Convert capacitor star network to delta network
* Convert capacitor delta network to star network
* Convert inductor star network to delta network
* Convert inductor delta network to star network
* Convert impedance star network to delta network
* Convert impedance delta network to star network

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock Pro feature | $1.99 | one-time |



## Version history (last 2 releases)

### 1.0.05 — 2024-03-26

Fix minor bugs

### 1.0.0 — 2021-12-29

No release notes.

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## More apps by Siu Yuen Ho

- [Easy Ohm's Law](https://appshunter.io/ios/app/easy-ohms-law/id814088524)
- [RC Circuit Pro](https://appshunter.io/ios/app/rc-circuit-pro/id824145786)
- [RC Circuit](https://appshunter.io/ios/app/rc-circuit/id824460716)
- [Resistor Tools Pro](https://appshunter.io/ios/app/resistor-tools-pro/id825620924)
- [Resistor Tools](https://appshunter.io/ios/app/resistor-tools/id826045228)
- [Timer 555 Calculator Pro](https://appshunter.io/ios/app/timer-555-calculator-pro/id833443125)

All apps by Siu Yuen Ho: https://appshunter.io/developer/814088527

## Related topics

[delta adapter](https://appshunter.io/ios/topics/delta-adapter)

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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 2026-06-04.*