World Time Clock Master vs Noise Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
World Time Clock Master
Effortlessly manage multiple time zones with this app. Convert times instantly, schedule events, and view global clocks at a glance with interactive widgets. Features atomic accuracy and a vast database of locations.
- Multiple time zone display
- Interactive time conversion
- Event scheduling
- Atomic time accuracy
- Dynamic home screen widgets
- List mode for text view
- Real moon phases and sunrise/sunset
Read full descriptionHide full description
THE EASIEST WAY TO DEAL WITH MULTIPLE TIMEZONES + INTERACTIVE WIDGETS Sick of screwing up meeting times and missing calls? This app cuts through time-zone confusion and hands you the perfect hour at a glance. Forget guesswork — just click, connect, and impress. KEY FEATURES EVENT SCHEDULING MADE EASY Found the perfect meeting time? Add events to your calendar with just a tap, and never miss an international webinar, call, or special moment again. ATOMIC ACCURACY No drift, no guesswork. Each second syncs with the atomic standard, so you can trust every moment. Extensive Time Zone Database: Tap into over 160,000 locations and time zones including GMT, UTC, and more. UNIFIED CLOCK FACE View all your essential time zones at a glance on one beautifully designed, customizable clock face. Whether you prefer digital or analog displays (or even military time), everything is exactly where you need it. INTERACTIVE TIME CONVERSION Convert times instantly by simply twisting or swiping across the clock face. Watch as your selected time zones update in real time—making planning international calls, meetings, or travel effortless. DYNAMIC WIDGETS Access global times without even opening the app. Our interactive home screen widget lets you drag a simple line to reveal and convert times, ensuring you’re always in sync no matter where you are. LIST MODE Get a clean, text-based view of all your cities in one column. See times and dates at a glance, and scroll to check future or past hours. It’s a no-fuss way to track the world’s clocks. FEELS LIKE A LUXURY TIMEPIECE We poured effort into details most people never notice — and we’re okay with that. Our users aren’t “most people.” Details include: — Real Moon Phases — Real Moon Rotation — Real Sunrise & Sunset — Advanced City Lights — Haptic Feedback * * * World Clock Master offers a premium subscription: Subscribe to get access to unlimited timezones, interactive widgets, customizations, and timely automatic updates of our timezone database of more than 160,000 locations and timezones. – Length of subscription: 1 month or 1 year – Payment will be charged to iTunes Account at confirmation of purchase – Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period – Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal – Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase – Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable – Terms & Conditions: https://timemaster.s3.amazonaws.com/Time-master-terms.pdf
Noise Meter
Read full descriptionHide full description
Check whether upstairs footsteps, a neighbor's music, construction or traffic noise goes over the limit. Answer three quick questions and each measurement is judged minute by minute against the right reference: Korea's apartment impact-noise rule or the WHO community-noise guideline. Whether it went over is always free. Noise Meter turns your phone into a real-time decibel meter and sound level meter for everyday noise checks. Open the app to see the current dB level on an analog gauge and digital readout. Follow changes on a live 60-second chart and review MIN, AVG (Leq), MAX and PEAK values. Choose A/C/Z frequency weighting or Fast/Slow response, adjust the calibration offset for your device, then save the session for free. Saved-result details, text sharing, and CSV require Premium. MEASURE AT A GLANCE - Real-time decibel (dB) reading - Analog gauge and clear digital display - MIN / AVG (Leq) / MAX / PEAK levels - Live 60-second noise chart - Pause, reset and save sessions - Noise-level reference guide ADJUST THE METER - A, C and Z frequency weighting - Fast (125 ms) and Slow (1 s) response - Per-device calibration offset SAVE AND SHARE - Measurement history with labels - Saved-result details and timeline with Premium - Text result sharing with Premium - CSV export with Premium PREMIUM ANALYSIS - 1/3-octave spectrum analyzer with peak hold - L10 / L50 / L90 statistics - NIOSH and OSHA dose estimates with 8-hour TWA - Saved-result details and timelines - CSV export USE IT TO CHECK - Noise at home or from nearby rooms - Office, cafe and street sound levels - TV, music and speaker volume - General workplace noise awareness PRIVATE BY DESIGN Audio is analyzed on your device and is not stored or uploaded. REFERENCE ONLY Phone microphones and readings vary by device and environment. Noise Meter does not replace a calibrated professional sound level meter and should not be used as legal evidence or as the sole basis for health and workplace-safety decisions. Premium is available as an auto-renewing weekly subscription or a one-time lifetime unlock. Localized prices and renewal terms appear before purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is device support: World Time Clock Master at 3 against Noise Meter's 1. 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
Both are free to download. World Time Clock Master sells 9 in-app purchases, starting at $2.99 per month and Noise Meter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
World Time Clock Master ships an update fortnightly, Noise Meter every 2 weeks. The most recent releases landed on November 7, 2026 and October 25, 2026 respectively.
| Parameter | World Time Clock Master | Noise Meter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (846 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 846 — better | — |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | — |
| Devices | iPhone, iPad, Vision Pro — better | iPhone |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 236 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | Alex Komarov Inc. | Sunwoo Kim |
Bugs and requests
World Time Clock Master
Reported bugs
4 issues- Lose all the registered locations after updating the app
- Sticky signup interface
- Widget doesn't work
- GMT and London currently have a 1 hour time difference between the two locations, but the app shows them the same time
Requested features
4 requests- Add the time difference in hours between the default location and other locations in both the widget and the app
- See my calendar events on the dial
- Make a paid tier that doesn't collect my data
- Add new event to a Calendar
Noise Meter
Not enough reviews yet to summarise bugs or requests.
In-app purchases
World Time Clock Master
- 1 month2 variants$2.991 Month
- 3 months$3.993 Months
- 1 year3 Days trial$11.991 Year
Show 2 moreShow fewer
- 1 year$11.991 Year
- 1 year3 Days trial$19.991 Year
- Lifetime$29.99
- Lifetime$49.99
- Lifetime$79.99
Show 1 moreShow fewer
- Lifetime$99.99
Noise Meter
- Pro Unlock$4.99
Questions
Is World Time Clock Master free?
Is Noise Meter free?
Do World Time Clock Master or Noise Meter have ads?
Which is updated more often, World Time Clock Master or Noise Meter?
Other comparisons















