Decibel Meter vs QR Code Generator Expert
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Decibel Meter
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The Decibel Meter is a professional-grade tool for real-time measurement of environmental noise, designed for people who are concerned about noise levels. Tested and calibrated for use with most Apple devices, it not only accurately detects decibel levels but also provides vivid environmental comparisons to help you understand noise levels more intuitively. Additionally, you can choose to record location information and easily share results.
QR Code Generator Expert
Easily create custom QR codes for various data types like URLs, Wi-Fi, and contacts. Personalize your codes with colors and adjust settings for a unique look. Save and share your creations instantly, with offline functionality and no sign-up needed.
- Generate QR codes for text, URLs, Wi-Fi, contacts, and more
- Customize QR code appearance with colors and backgrounds
- Adjust size and error correction settings
- Real-time preview of QR codes
- Save QR codes to photos or share instantly
- Offline functionality
- No sign-up required
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QR Code Generator Expert makes creating QR codes fast, simple, and powerful. Generate QR codes for: • Text • URLs and websites • Wi-Fi access • Phone numbers & SMS • Emails • Contacts (vCard) • Events (iCal) Customize your QR: • Adjust size and error correction • Choose colors and backgrounds • Preview in real-time • Save to Photos or share instantly Why choose QR Code Generator Expert? • No sign-up required • Works offline (no internet needed) • Fast, lightweight, and secure • Ad-supported with optional upgrades Perfect for business cards, event flyers, social media links, or personal use. Create, save, and share QR codes in seconds with QR Code Generator Expert.
Screenshots
Verdict
The clearest difference is update cadence: QR Code Generator Expert at monthly against Decibel Meter's every 6 months. 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.
Decibel Meter ships an update every 6 months, QR Code Generator Expert monthly. The most recent releases landed on September 27, 2026 and October 9, 2026 respectively.
| Parameter | Decibel Meter | QR Code Generator Expert |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 1 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | 庆贤 曾 | StudyBridge LLC |
In-app purchases
Decibel Meter
No in-app purchases
QR Code Generator Expert
No in-app purchases
Questions
Is Decibel Meter free?
Is QR Code Generator Expert free?
Do Decibel Meter or QR Code Generator Expert have ads?
Which is updated more often, Decibel Meter or QR Code Generator Expert?
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