# Star vs AC Circuit Analyzer

The clearest difference is update cadence: AC Circuit Analyzer at fortnightly against Star's every 27 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Star sells 1 one-off in-app purchase and AC Circuit Analyzer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Star ships an update every 27 months, AC Circuit Analyzer fortnightly. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Star | AC Circuit Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ac-circuit-analyzer/id6446215739/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 27 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 3 MB | 35 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Paul Moat](https://appshunter.io/developer/1620489921) |

## What reviewers say

### Star

[App page](https://appshunter.io/ios/app/star-delta-calculator/id1602175282)

**In-app purchases (1)**

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


### AC Circuit Analyzer

[App page](https://appshunter.io/ios/app/ac-circuit-analyzer/id6446215739)

This application enables users to simulate and design AC circuits, offering a unique way to input circuits in phasor form. It's an ideal tool for students studying electrical engineering and related fields.

**Highlights:** AC circuit simulation, Phasor input for circuits, Ideal for theoretical and real-world scenarios, Supports various electrical engineering courses, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full Access | $1.99 | one-time |


## Frequently asked questions

### Is Star free?

Star is free to download, with in-app purchases available.

### Is AC Circuit Analyzer free?

AC Circuit Analyzer is free to download, with in-app purchases available.

### Do Star or AC Circuit Analyzer have ads?

Neither Star nor AC Circuit Analyzer shows ads.

### Which is updated more often, Star or AC Circuit Analyzer?

Star ships an update every 27 months, and AC Circuit Analyzer fortnightly. Most recently, Star was updated on October 10, 2026 and AC Circuit Analyzer on October 12, 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.*