Comparison

HSLock vs Decibels Meter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

HSLock

Features
Read full description

HSLock is a convenient and fast door lock management software. Support a variety of unlocking methods, password users, credit card users, fingerprint users, remote control users, mobile phone users can be managed through this application. Add and delete users, read, save and query unlock records, and provide complete information service for your lock management.

About

Decibels Meter

Monitor real-time decibel levels at concerts and festivals. Capture moments with watermarked photos and receive alerts for potentially harmful sound levels to protect your hearing.

Highlights
  • Real-time decibel monitoring
  • Watermark camera for concert photos
  • Hearing protection alerts
  • Sound pressure level measurement
  • Venue sound terminology
Features
Read full description

Concert Decibel Meter - Your Professional Sound Wave Monitoring Assistant When you're surrounded by the sound waves of a concert or music festival, are you curious about the decibel level? Want to share the electrifying experience with the world? The Concert Decibel Meter is your professional sound wave monitoring assistant. 【Core Functions】 Real-time Decibel Monitoring: Accurately captures and displays the real-time decibel value of the venue. From "rhythm warm-up" to "raging sound waves," it uses the most knowledgeable terms about the venue to intuitively tell you the sound pressure level you're in. Watermark Camera: Built-in camera captures moments directly from the venue. Automatically generates cool watermarks, creating a unique souvenir of your visit. Hardcore Hearing Protection: More than just measurement, it's your intelligent guardian of hearing. When the volume reaches a dangerous level, the app will issue a strong alert, reminding you to immediately activate hearing protection mode.

Screenshots

HSLock4 screens
Decibels Meter4 screens

Verdict

The call

The clearest difference is iOS requirement: HSLock at 9.0 against Decibels Meter's 15.0. On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

HSLock ships an update fortnightly, Decibels Meter every 9 days. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 8 level
HSLock versus Decibels Meter: the parameters behind the verdict, then further details
ParameterHSLockDecibels Meter
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyFortnightlyEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size11 MB27 MB
Age rating4+4+
Developer庆省 韩剑 罗

In-app purchases

None

HSLock

No in-app purchases

None

Decibels Meter

No in-app purchases

Questions

Is HSLock free?
HSLock is free to download, with no in-app purchases.
Is Decibels Meter free?
Decibels Meter is free to download, with no in-app purchases.
Do HSLock or Decibels Meter have ads?
Neither HSLock nor Decibels Meter shows ads.
Which is updated more often, HSLock or Decibels Meter?
HSLock ships an update fortnightly, and Decibels Meter every 9 days. Most recently, HSLock was updated on October 26, 2026 and Decibels Meter on October 28, 2026.

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