GVM LED vs GyLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GVM LED
Control photography lamps via Bluetooth connection. Adjust settings and manage your lighting equipment directly from your mobile device.
- Bluetooth lamp control
- Photography lighting management
- App-controlled lighting
- GVM product integration
Read full descriptionHide full description
This is a software that can control the photography lamp. The app controls the photography lamp product with app function under GVM through Bluetooth connection.
GyLog
Read full descriptionHide full description
GyLog is a motion data logger for Gyroflow stabilization. Record gyroscope and accelerometer data from your iPhone's sensors in GCSV format — for custom post-stabilization of your own iPhone footage, or for pairing with any mirrorless or cinema camera. TWO WAYS TO USE With your iPhone — While iPhone Action Mode and LOG bring built-in stabilization, GyLog hands the control back to you. Stabilize in Gyroflow with your own smoothness, cropping, and rolling-shutter settings — beyond what automatic processing decides for you. With a mirrorless or cinema camera — Mount your iPhone on any camera with a cold shoe adapter. GyLog turns your iPhone into a dedicated Gyroflow log recorder, capturing the motion your camera can't, so you can stabilize its footage in post. KEY FEATURES • GCSV format — directly compatible with Gyroflow • Background motion logging — keeps recording even when screen is locked • Mount angle calibration — automatically detects phone orientation • Audio sync backup — optional low-bitrate audio track for drift correction • High sampling rate — up to ~100 Hz on supported devices • File management — filter, select, share, and delete recordings • AirDrop & Files app — easily export logs to your Mac for processing PRIVACY FIRST GyLog does not collect any personal data. All recordings are stored locally on your device and are never uploaded to any server. Audio sync files are stored locally and can be deleted at any time. HOW IT WORKS 1. Mount your iPhone on your camera, or hold it while shooting iPhone video 2. Tap "Calibrate Mount" to detect the phone angle 3. Press Start and begin filming 4. When done, export the GCSV file to your Mac 5. Import into Gyroflow for custom post-stabilization ABOUT GCSV FORMAT GCSV (Gyroflow CSV) is the standard format used by Gyroflow for external gyroscope data. GyLog outputs all 6 axes of motion data (3-axis gyroscope + 3-axis accelerometer) with nanosecond-precision timestamps. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: GVM LED at none against GyLog's 1. GVM LED also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.5). GyLog's advantage is update cadence (every 3 weeks vs every 2 months). On price and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. GyLog sells 1 in-app purchase, starting at $14.99 per year. GVM LED asks for nothing beyond the download.
GVM LED ships an update every 2 months, GyLog every 3 weeks. The most recent releases landed on September 5, 2026 and September 12, 2026 respectively.
| Parameter | GVM LED | GyLog |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (4 ratings) — better | — |
| Positive reviews | 22.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.5 |
| Further details — not scored | ||
| Size | 49 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | 丹丹 陈 | Kumo, Inc. |
Bugs and requests
GVM LED
Reported bugs
12 issues- 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
Show 7 moreShow fewer
- App freezes on main page or navigation tabs
- Password matching validation fails despite identical entries
- Login fails when using non-.com email addresses
- App requires WiFi for login despite Bluetooth-only operation
- In-app message/problem form always returns 'FAILED' status
- Incompatibility with iPad Pro color adjustment
- Recent update broke previously working connections
Requested features
10 requests- 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
Show 5 moreShow fewer
- Add dark mode option
- Create desktop/PC version with better controls
- Allow grouping of lights for synchronized control
- Implement offline mode for Bluetooth-only operation
- Add light naming persistence across app sessions
GyLog
Not enough reviews yet to summarise bugs or requests.
In-app purchases
GVM LED
No in-app purchases
GyLog
- GyLog Pro14 Days trial$14.991 Year









