# Circuit Calculator vs Lesson Plan Pro

The clearest difference is price: Circuit Calculator at Free against Lesson Plan Pro's $0.99. Lesson Plan Pro's advantage is iOS requirement (12.0 vs 18.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Circuit Calculator is free to download; Lesson Plan Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Circuit Calculator ships an update monthly, Lesson Plan Pro every 2 months. The most recent releases landed on October 16, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Circuit Calculator | Lesson Plan Pro |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | 52.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | — |
| Size | 2 MB | 30 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Neil Woodcock](https://appshunter.io/developer/836792867) | [Grzegorz Rakoca](https://appshunter.io/developer/1778459428) |

## What reviewers say

### Circuit Calculator

[App page](https://appshunter.io/ios/app/circuit-calculator/id836792864)

This application allows users to build, simulate, and solve linear AC and DC electrical circuits. It is designed for students, engineers, and electronics enthusiasts to aid in study, verification, and practical circuit analysis. Users can visualize current flow and analyze component values directly on schematics.

**Highlights:** Build schematics with drag-and-drop components, Solve for steady-state voltages and currents, Real-time DC current flow animation, Compute power values and Thévenin/Norton equivalents, Supports rectangular and polar notation, Save, export, and import circuits, Interactive user guide and example circuits

**Features:** macOS Compatibility

**In-app purchases:** none


### Lesson Plan Pro

[App page](https://appshunter.io/ios/app/lesson-plan-pro/id6745541292)

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

**In-app purchases:** none


## Frequently asked questions

### Is Circuit Calculator free?

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

### Is Lesson Plan Pro free?

Lesson Plan Pro costs $0.99, with no in-app purchases.

### Do Circuit Calculator or Lesson Plan Pro have ads?

Neither Circuit Calculator nor Lesson Plan Pro shows ads.

### Which is updated more often, Circuit Calculator or Lesson Plan Pro?

Circuit Calculator ships an update monthly, and Lesson Plan Pro every 2 months. Most recently, Circuit Calculator was updated on October 16, 2026 and Lesson Plan Pro on October 1, 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.*