# Video tachometer vs Electrical Calculator

The clearest difference is price: Video tachometer at Free against Electrical Calculator's $4.99. Video tachometer also leads on iOS requirement (15.6 vs 17.0). Electrical Calculator's advantage is in-app purchases (none vs 1) and chart position (#189 vs unranked). On update cadence, ads and device support there is nothing between them.

Video tachometer is free to download; Electrical Calculator costs $4.99 up front. Video tachometer sells 1 one-off in-app purchase. Electrical Calculator asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 26, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Video tachometer | Electrical Calculator |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.6 (84 ratings)](https://appshunter.io/ios/app/video-tachometer/id1492583587/reviews)** | — |
| Number of ratings | **84** | — |
| Positive reviews | 84.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Best chart rank | — | **#189** |
| Size | 5 MB | 1 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) | [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858) |

## What reviewers say

### Video tachometer

[App page](https://appshunter.io/ios/app/video-tachometer/id1492583587)

This app uses slow-motion video to create a strobe light effect, allowing you to measure rotational speeds. It records video with detailed information like frame rate and exposure, and offers customizable text overlays.

**Highlights:** Strobe light effect simulation, Rotational speed measurement (RPM/Hz), Slow-motion video recording, Customizable text overlays on video, Adjustable frame rate and exposure, Records 4K video (if supported)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $2.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 💡 Clever approach
- 🚀 Works beautifully
- 👍 Very handy
- 👍 Accurate measurements

**What reviewers complain about**

- 💸 Too much in paid version
- 💰 Free version limited
- 🤔 Confusing settings initially
- 👎 Unclear about recording
- 👎 No built-in video recording

**Reported bugs**

- Does not read anything
- Pop-ups for paid features
- Interface visible in screen recording

**Requested features**

- Ability to record video
- Slow phase shift mode
- Improved UI for initial setup
- Long press for gradual increment/decrement


### Electrical Calculator

[App page](https://appshunter.io/ios/app/electrical-calculator-panel/id6761541388)

**Currently charting:** #189 Top Paid · Utilities (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is Video tachometer free?

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

### Is Electrical Calculator free?

Electrical Calculator costs $4.99, with no in-app purchases.

### Do Video tachometer or Electrical Calculator have ads?

Neither Video tachometer nor Electrical Calculator shows ads.

### Which is updated more often, Video tachometer or Electrical Calculator?

Video tachometer ships an update every 3 months, and Electrical Calculator every 3 months. Most recently, Video tachometer was updated on September 26, 2026 and Electrical Calculator on September 24, 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.*