# Circuits vs Sun Tracker App

The clearest difference is ads: Circuits at none against Sun Tracker App's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Circuits | Sun Tracker App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/circuits-3-phase-analysis/id6761165090/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | Free | — |
| Size | 2 MB | 6 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gabriel Elias Gabrie Kattan](https://appshunter.io/developer/1887530659) | [Guo Rong Ma](https://appshunter.io/developer/1887723618) |

## What reviewers say

### Circuits

[App page](https://appshunter.io/ios/app/circuits-3-phase-analysis/id6761165090)

An interactive tool for analyzing 3-phase AC circuits, offering quick and accurate calculations for electrical engineering students and professionals. Supports all four configurations with flexible input options and privacy-focused on-device operation.

**Highlights:** Interactive circuit diagram, Calculations for all four configurations, Source, line, and load voltage analysis, Per-phase and total power calculations, Flexible input for balanced/unbalanced loads, Rectangular or phasor value entry

**Features:** macOS Compatibility

**In-app purchases:** none


### Sun Tracker App

[App page](https://appshunter.io/ios/app/sun-tracker-app-sunflower-ed/id6761805756)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Circuits free?

Circuits is free to download, with no in-app purchases.

### Is Sun Tracker App free?

Sun Tracker App is free to download, with no in-app purchases.

### Do Circuits or Sun Tracker App have ads?

Sun Tracker App shows ads; Circuits does not.

### Which is updated more often, Circuits or Sun Tracker App?

Circuits ships an update every 5 days, and Sun Tracker App every 5 days. Most recently, Circuits was updated on October 25, 2026 and Sun Tracker App on October 6, 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.*