# Video tachometer vs bmLogger

The clearest difference is in-app purchases: bmLogger at none against Video tachometer's 1. bmLogger also leads on update cadence (every 3 days vs every 3 months) and rating (5.0 vs 4.6). Video tachometer's advantage is ratings volume (84 vs 4). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Video tachometer sells 1 one-off in-app purchase. bmLogger asks for nothing beyond the download.

bmLogger holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Video tachometer has 84 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 85% of Video tachometer's written reviews are positive against 100% of bmLogger's.

Video tachometer ships an update every 3 months, bmLogger every 3 days. Both last shipped on October 4, 2026.

## The numbers

| Metric | Video tachometer | bmLogger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (84 ratings)](https://appshunter.io/ios/app/video-tachometer/id1492583587/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/bmlogger/id6654885355/reviews)** |
| Number of ratings | **84** | 4 |
| Positive reviews | 84.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 42 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) | [Blue Maestro](https://appshunter.io/developer/773672141) |

## 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


### bmLogger

[App page](https://appshunter.io/ios/app/bmlogger/id6654885355)

This app connects to Bluetooth sensors to provide real-time temperature and humidity monitoring. It allows for data logging, historical analysis, and customizable alerts for various environmental conditions. Ideal for cold chain compliance, food safety, and climate control.

**Highlights:** Real-time temperature and humidity readings, Data logging and historical graphs, CSV data export, Multiple sensor connection, Customizable alerts, Offline functionality

**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 bmLogger free?

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

### Which has better reviews, Video tachometer or bmLogger?

bmLogger is rated higher. Video tachometer averages 4.6 out of 5 from 84 ratings, while bmLogger averages 5.0 from 4 ratings.

### Do Video tachometer or bmLogger have ads?

Neither Video tachometer nor bmLogger shows ads.

### Which is updated more often, Video tachometer or bmLogger?

Video tachometer ships an update every 3 months, and bmLogger every 3 days. Most recently, Video tachometer was updated on October 4, 2026 and bmLogger on October 4, 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.*