Decibel Meter Plus Pro vs PlateDetect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Decibel Meter Plus Pro
Measure the sound levels around you with this utility app. It displays average, peak, and max values, offers decibel exposure time guidelines, and provides information on noise-induced hearing loss. The app also allows data recording and export for analysis.
- Measure sound levels
- Display average, peak, and max values
- Decibel exposure time guidelines
- Information on noise-induced hearing loss
- Record and export data
- Calibrate measurements
- Universal app support
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Decibel Meter Plus Pro turns your iPhone or iPad into a clean and easy-to-use sound level meter. Measure the noise around you in real time, view current, average, max, and peak dB readings, save measurement sessions, and export reports when you need to keep a record. Whether you want to check a quiet room, monitor everyday environmental noise, compare sound levels over time, or save a simple noise report, Decibel Meter Plus Pro gives you a clear and modern way to do it. KEY FEATURES • Real-time decibel meter View live sound levels with a large, easy-to-read meter. • Current, average, max, and peak values Quickly understand how sound levels change during a measurement session. • Live noise trend See noise changes over time instead of relying on a single number. • Save measurement sessions Keep useful sound level records for later review. • Session history Browse saved sessions with date, duration, average level, max level, and noise category. • Session reports Review key sound level stats, noise trend charts, location notes, and report details. • Export & share reports Export saved reports as an image, PDF, or CSV file. A limited number of free report exports is included. Unlock Unlimited Reports with a one-time purchase for unlimited exports. • Optional location saving Save location information only with sessions you manually save. • Calibration Adjust readings to better match a reference sound meter. • Noise level guide Learn common sound levels and tips for better measurements. • iPhone and iPad support Enjoy a redesigned interface that works beautifully on both iPhone and iPad. • 30+ languages The app is now localized for users around the world. • Privacy-friendly design Audio is processed on your device and is not uploaded. UNLIMITED REPORTS Unlimited Reports is an optional one-time unlock for users who want unlimited image, PDF, and CSV report exports. No subscription is required. SUPPORT If you have questions, feedback, or need help with purchases or report exports, please contact us at: ipixeltech@gmail.com IMPORTANT NOTE Decibel Meter Plus Pro uses the built-in microphone on your device. Readings are intended for general reference and everyday noise checks. For certified workplace testing, legal compliance, or professional acoustic measurement, please use certified sound level equipment.
PlateDetect
This app reads license plates directly on your device using your camera or imported photos. It offers features for checking plate readability from a distance, managing scan history, and setting up custom alerts for specific plates.
- On-device license plate reading
- Live camera scan
- Photo import recognition
- Readability checks
- History management
- Watchlist alerts
- Plate format configuration
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PlateDetect is an on-device license plate reading app built for controlled field scans, photo imports, readability checks, local review, and watchlist alerts. Start by adding the plate formats used in your area, such as AA ## or AAA ####. PlateDetect strictly follows the formats you add. If no format is configured, detection stays off. Use Live Scan to read plates with the camera, or import a photo for the same on-device recognition workflow. The app combines plate localization, Apple Vision OCR, configurable confidence thresholds, and duplicate-save timing so History stays focused on useful reads instead of every frame. Field Check is a separate mode for measuring whether a plate is readable from a selected distance. It reports readiness using OCR confidence, plate size, framing, and plate shape without saving the check as a scan. History keeps each saved detection organized with normalized plate text, raw OCR text, detection confidence, OCR confidence, matched format, capture time, source, notes, optional GPS region, and saved media. You can choose how much surrounding image context is kept around the plate crop. Watchlist alerts help identify plates you choose to monitor locally. Standard detections use a quieter confirmation tone, while watchlist matches use a distinct higher alert repeated three times. Plate Rules let you allow or restrict plate endings by day and time window, with a Monday-Sunday overview for quick schedule review. PlateDetect is local-first. Detection runs on device, History is stored locally, Face ID app lock can protect saved records, and backend sync is optional through your own HTTPS endpoint. PlateDetect is a field aid, not a legal identity system. Confirm important reads against official records and follow the rules for your role and location. Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: PlateDetect at Free against Decibel Meter Plus Pro's $0.99. PlateDetect also leads on rating (5.0 vs 3.8) and in-app purchases (none vs 1). Decibel Meter Plus Pro's advantage is ratings volume (80 vs 1) and device support (3 vs 1). On 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
PlateDetect is free to download; Decibel Meter Plus Pro costs $0.99 up front. Decibel Meter Plus Pro sells 1 one-off in-app purchase. PlateDetect asks for nothing beyond the download.
PlateDetect holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Decibel Meter Plus Pro has 80 ratings behind it against 1, so its average is the more settled of the two.
Decibel Meter Plus Pro ships an update every 2 months, PlateDetect every 9 days. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.
| Parameter | Decibel Meter Plus Pro | PlateDetect |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.8 (80 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 52.4% of reviews | — |
| Number of ratings | 80 — better | 1 |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | 华芳 张 | Ona Pacholo Asis |
Customer experience
Decibel Meter Plus Pro
PlateDetect
In-app purchases
Decibel Meter Plus Pro
- Unlimited Reports$2.99
PlateDetect
No in-app purchases





