# GVM LED vs GyLog

The clearest difference is rating: GVM LED at 3.2 against GyLog's 1.0. GVM LED also leads on in-app purchases (none vs 2) and ratings volume (5 vs 1). GyLog's advantage is update cadence (every 3 weeks vs every 2 months). On price and ads there is nothing between them.

Both are free to download. GyLog sells 2 in-app purchases, starting at $14.99 per year. GVM LED asks for nothing beyond the download.

GVM LED holds the better App Store score, 3.2 against 1.0. That said, the two scores are not equally well evidenced: GVM LED has 5 ratings behind it against 1, so its average is the more settled of the two.

GVM LED ships an update every 2 months, GyLog every 3 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | GVM LED | GyLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (5 ratings)](https://appshunter.io/ios/app/gvm-led/id1512358684/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/gylog/id6759689665/reviews) |
| Number of ratings | **5** | 1 |
| Positive reviews | 21.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 49 MB | 7 MB |
| Requires iOS | **13.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [丹丹 陈](https://appshunter.io/developer/1437608478) | [Kumo, Inc.](https://appshunter.io/developer/955162378) |

## What reviewers say

### GVM LED

[App page](https://appshunter.io/ios/app/gvm-led/id1512358684)

Control photography lamps via Bluetooth connection. Adjust settings and manage your lighting equipment directly from your mobile device.

**Highlights:** Bluetooth lamp control, Photography lighting management, App-controlled lighting, GVM product integration

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

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and intuitive control interface
- 🚀 Fast Bluetooth connection when working
- 🎨 Good color control and lighting customization
- 💡 Responsive developers who implement feature requests
- 🔧 Ability to rename lights for easy identification

**What reviewers complain about**

- 🔐 Mandatory account registration and login requirement
- 🐛 Frequent Bluetooth connection failures
- 📧 Verification code delivery delays and failures
- ❌ Cannot control multiple lights independently at once
- 📱 App crashes during device syncing

**Reported bugs**

- Login credentials rejected despite correct password
- Verification code times out before use
- App crashes during device synchronization
- Cannot connect more than one light at a time
- Bluetooth connection drops unexpectedly

**Requested features**

- Remove mandatory login requirement for local Bluetooth control
- Enable independent control of multiple lights simultaneously
- Expand scene customization options beyond 8 presets
- Add keyboard shortcuts and Stream Deck integration for streaming
- Improve color wheel with more granular color selection


### GyLog

[App page](https://appshunter.io/ios/app/gylog/id6759689665)

This app records gyroscope and accelerometer data from your iPhone to create GCSV files. These files can be used for custom post-stabilization of your own iPhone footage or paired with footage from mirrorless or cinema cameras in Gyroflow.

**Highlights:** Record gyroscope and accelerometer data, GCSV format compatible with Gyroflow, Background motion logging, Mount angle calibration, Audio sync backup, High sampling rate up to ~100 Hz, Easy file management and export

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GyLog Pro | $14.99 | per year |
| GyLog Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is GVM LED free?

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

### Is GyLog free?

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

### Which has better reviews, GVM LED or GyLog?

GVM LED is rated higher. GVM LED averages 3.2 out of 5 from 5 ratings, while GyLog averages 1.0 from 1 ratings.

### Do GVM LED or GyLog have ads?

Neither GVM LED nor GyLog shows ads.

### Which is updated more often, GVM LED or GyLog?

GVM LED ships an update every 2 months, and GyLog every 3 weeks. Most recently, GVM LED was updated on October 24, 2026 and GyLog on October 28, 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.*