Chronometer vs Decibel Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chronometer
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Chronometer puts the world's time zones at your fingertips with a stunning animated 3D globe. Spin the globe, select any of 190+ countries, and instantly view live local time, sunrise/sunset, business hours, and golden hour — all wrapped in a premium dark interface with smooth animations and haptic feedback. KEY FEATURES - Animated COBE 3D globe - Real-time clocks for 190+ countries - Favorites dashboard with time comparison timeline - Meeting planner — find overlapping business hours - Time converter with day-difference awareness - Sunrise, sunset & golden hour tracking - Business hours status for every country - Cinematic launch screen with haptic tick-tick-tick - Glassmorphism UI with 60fps animations Built for remote teams, travelers, photographers, and anyone who thinks globally.
Decibel Meter
Measure ambient sound levels in real-time using your device's microphone. Understand your environment's noise status, save measurement sessions, and generate PDF reports with data and scene photos. Useful for everyday reference and record-keeping.
- Real-time decibel readings
- Spectrum analysis
- Environment status labels
- Session statistics
- Measurement history
- Audio playback
- Scene photo records
- PDF reports
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Decibel Meter turns your phone into a quick way to check how loud a place really is. Tap Start and you see the current sound level in dB with a live spectrum. End the session and the app keeps the average, peak and minimum values, the duration and the audio it recorded, so you can go back and compare later. WHAT YOU CAN DO • Live dB reading with a spectrum that reacts to the room • Save a session together with its audio and stats • Review every session in History and replay the recording • Generate a PDF report from a session, or attach one you already have • Take a scene photo with the time, place and reading printed on it • Calibrate the offset so readings sit closer to a reference meter • Compare a reading with familiar places: library, office, traffic, construction WHERE PEOPLE USE IT • Noise from renovation, machines or the road outside • Talking to a neighbour, a landlord or a building manager with something concrete • Checking whether a bedroom or study is quiet enough • Comparing two rooms, or the same room before and after a change EVERYTHING STAYS ON YOUR PHONE Recordings, reports and photos are saved on the device. The app does not upload them. PERMISSIONS • Microphone: needed to measure sound. Keep the app in the foreground while measuring. • Camera and location: used only when you take a scene photo with the reading on it. PLEASE NOTE Readings come from your phone's microphone, so they vary between devices and are affected by cases, dust and system audio processing. Calibration helps, but the numbers and reports are for reference and comparison only. They do not replace a calibrated sound level meter or a certified test report. Free with ads.
Screenshots
Verdict
The clearest difference is price: Chronometer at Free against Decibel Meter's $0.99. Chronometer also leads on update cadence (every 3 weeks vs every 3 months). Decibel Meter's advantage is ads (none vs shown) and iOS requirement (15.0 vs 26.2). On rating, ratings volume, 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
Chronometer is free to download; Decibel Meter costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Chronometer against 5.0 for Decibel Meter. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Chronometer ships an update every 3 weeks, Decibel Meter every 3 months. Both last shipped on October 24, 2026.
| Parameter | Chronometer | Decibel Meter |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 26.2 | 15.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Chathushka Rodrigo | 恒盛 程 |
Customer experience
Chronometer
Decibel Meter
In-app purchases
Chronometer
No in-app purchases
Decibel Meter
No in-app purchases









