# VoltLab vs Engineering Operational Detail

The clearest difference is price: VoltLab at Free against Engineering Operational Detail's $6.99. VoltLab also leads on update cadence (every 6 days vs every 38 months). Engineering Operational Detail's advantage is in-app purchases (none vs 7). On ads, device support and iOS requirement there is nothing between them.

VoltLab is free to download; Engineering Operational Detail costs $6.99 up front. VoltLab sells 7 in-app purchases, starting at $3.99 per month. Engineering Operational Detail asks for nothing beyond the download.

VoltLab ships an update every 6 days, Engineering Operational Detail every 38 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | VoltLab | Engineering Operational Detail |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | **[5.0 (391 ratings)](https://appshunter.io/ios/app/voltlab-interactive-physics/id1461701360/reviews)** | — |
| Number of ratings | **391** | — |
| Positive reviews | 96.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 38 months |
| Monetization | Free with in-app purchases | — |
| Size | 132 MB | 13 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Denis Gladkii](https://appshunter.io/developer/1851726380) | [Maxim Lukyanenko](https://appshunter.io/developer/1496252741) |

## What reviewers say

### VoltLab

[App page](https://appshunter.io/ios/app/voltlab-interactive-physics/id1461701360)

This app simplifies learning electricity through interactive lessons and visual experiments. It offers offline access, quizzes with detailed solutions, and a reference guide for formulas. Ideal for students and educators seeking to understand electrical concepts.

**Highlights:** Interactive circuit building, Visual experiment results, Self-paced learning, Quizzes with step-by-step solutions, Offline access to lessons, Reference guide for formulas

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VoltLab Pro One Month | $3.99 | per month |
| VoltLab Pro One Year | $12.99 | per year |
| VoltLab Pro One Year | $6.99 | one-time |
| VoltLab Donat | $10.99 | one-time |
| VoltLab Pro | $39.99 | one-time |
| VoltLab Donate | $49.99 | one-time |
| Awesome VoltLab Donat | $99.99 | one-time |


### Engineering Operational Detail

[App page](https://appshunter.io/ios/app/engineering-operational-detail/id6463043839)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VoltLab free?

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

### Is Engineering Operational Detail free?

Engineering Operational Detail costs $6.99, with no in-app purchases.

### Do VoltLab or Engineering Operational Detail have ads?

Neither VoltLab nor Engineering Operational Detail shows ads.

### Which is updated more often, VoltLab or Engineering Operational Detail?

VoltLab ships an update every 6 days, and Engineering Operational Detail every 38 months. Most recently, VoltLab was updated on November 3, 2026 and Engineering Operational Detail on October 30, 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.*