GVM LED vs Sound dB detector
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
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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.
Sound dB detector
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Is the noise around you actually dangerous? SoundGuard turns your phone's microphone into a real-time hearing-health monitor — so you know when to turn it down, step back, or grab hearing protection, before the damage is done. LIVE DECIBEL METER See your ambient sound level update in real time on a clear, color-coded gauge — from Safe (green) all the way to Instant Injury Risk (deep purple). No more guessing whether a concert, a job site, or your neighbor's power tools are actually harmful. KNOW YOUR SAFE EXPOSURE TIME Every reading comes with plain-language context: what the level is comparable to, and how long you can safely stay in it based on established occupational hearing-health guidance (OSHA-style exchange rate). At 100 dB, that might be 2 hours. At 120 dB, it's seconds. TRACK YOUR NOISE DOSE SoundGuard doesn't just look at the instant reading — it accumulates your exposure over the session, the same way professional noise dosimeters do. Watch your daily "noise dose" build up, with clear warnings at 50%, 80%, 100%, and beyond. SESSION HISTORY & CHARTS Every session is saved locally, with peak dB, average dB, duration, and a dB-over-time chart so you can review exactly how loud your day really was. YOUR PRIVACY, PROTECTED SoundGuard never records or uploads audio. All analysis happens on your device in real time — only the calculated decibel value is ever stored. No accounts, no cloud, no ads. WHO IT'S FOR • Concertgoers and musicians protecting their hearing • Parents checking if a nursery, toy, or event is too loud for kids • Workers and hobbyists around power tools or machinery • Anyone curious (or concerned) about noise in daily life Please note: phone microphones aren't calibrated sound level meters. Sound dB detector readings are estimates that vary by device and should be used as a general guide, not a precise measurement — consult a professional audiologist for medical concerns. SoundGuard — because your hearing doesn't come back.
Screenshots
Verdict
The clearest difference is iOS requirement: GVM LED at 13.0 against Sound dB detector's 16.0. On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | GVM LED | Sound dB detector |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (5 ratings) — better | — |
| Positive reviews | 21.7% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 49 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | 丹丹 陈 | Kere Tech |
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
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- 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
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- 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
Sound dB detector
Not enough reviews yet to summarise bugs or requests.
In-app purchases
GVM LED
No in-app purchases
Sound dB detector
No in-app purchases









