# Thevenin vs Euclid Lab

The clearest difference is in-app purchases: Euclid Lab at none against Thevenin's 2. Euclid Lab also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Thevenin sells 2 in-app purchases, starting at $4.99 per month. Euclid Lab asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Thevenin | Euclid Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (11 ratings)](https://appshunter.io/ios/app/thevenin-ai-stem-solver/id6759879628/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | Freemium | — |
| Size | 43 MB | 14 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Thafier Mahmood](https://appshunter.io/developer/1698380406) | [Yung-Hsin Shieh](https://appshunter.io/developer/6794223212) |

## What reviewers say

### Thevenin

[App page](https://appshunter.io/ios/app/thevenin-ai-stem-solver/id6759879628)

Instantly solve and understand electrical circuits with AI. Scan diagrams from textbooks or notes to get step-by-step solutions for DC/AC circuits, equivalents, and more. Designed for engineering students to grasp concepts and prepare for exams.

**Highlights:** Instant circuit scanning, Step-by-step solution breakdown, Support for DC/AC circuits, Thevenin/Norton equivalents, Nodal and mesh analysis, Op-amp and BJT analysis, High-accuracy component detection

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | per month |
| Pro | $29.99 | per year |


### Euclid Lab

[App page](https://appshunter.io/ios/app/euclid-lab/id6801162141)

**Features:** Family Sharing, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Thevenin free?

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

### Is Euclid Lab free?

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

### Do Thevenin or Euclid Lab have ads?

Neither Thevenin nor Euclid Lab shows ads.

### Which is updated more often, Thevenin or Euclid Lab?

Thevenin ships an update every 3 days, and Euclid Lab every 3 days. Most recently, Thevenin was updated on November 5, 2026 and Euclid Lab on November 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.*