GMT Time vs UTC NOW
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GMT Time
This app provides accurate GMT time using NTP protocol and TrueTime framework. It offers a timekeeping function, allows setting time between two locations for itineraries, and supports multiple languages. Enjoy precise timekeeping with 1/100 second accuracy.
- Accurate GMT time display
- NTP and TrueTime framework integration
- Timekeeping function (on/off)
- Set time between two locations
- Multi-language support (English, Japanese, Chinese, Cantonese)
- 1/100 second accuracy
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NEW IN 1.2: SIMPLE MODE AND MINUTE REPEATER Tap the accessibility icon at the top right of Settings to switch to Simple mode. Local time, manual announcements and settings are on one page. Schedule time windows by weekday with half-hourly or hourly announcements. MINUTE REPEATER GUIDE 1. Choose vibration separately for normal and Silent modes, and whether voice should play in Silent mode. 2. Set Vibration frequency and try the preview. Hourly is the default. Start the announcer to run vibration on its own schedule. 3. Count hours, quarters and remaining minutes, in that order, using a 12-hour clock. At 3:37: 3 long pulses, 2 long-short pairs, 7 short pulses. Each quarter represents 15 minutes. Bell previews use low tones for hours, high-low pairs for quarters and high tones for remaining minutes. Vibration requires a supported iPhone; the feel varies by device and foreground/background state. Background patterns use strong-weak pairs. Background use requires Pro Lock Screen announcements and depends on system and app state. Stopping announcements or entering quiet hours stops scheduled vibration; in-app mute stops sound only. Foreground manual announcements and bell previews can play in Silent mode. Time117 brings network time synchronization, spoken announcements, world clocks and watch records together for everyday timekeeping, travel and collecting. • Spoken time: start or stop announcements, adjust speech speed and signal sounds, and set quiet hours. • World time: choose home and destination zones, share times and set alarms. • Clock views: themes, a large desk clock, widgets and Siri shortcuts. • Watch accuracy: track one watch for free, record offsets and view daily-rate trends. • Acoustic estimates: record mechanical watch ticks with the microphone. When the signal is sufficient, see beat-rate and daily-rate estimates during recording, then confirm and save the full measurement. • Watch standards: explore reference information and official source links. Time117 Pro is a one-time lifetime purchase. It unlocks background and Lock Screen announcements, hourly and custom intervals, ad removal, multiple-watch tracking, and editing collection photos, purchase details and service records. Purchases can be restored. Background announcements support Live Activities and the Dynamic Island on compatible iPhone models. Available in English, Japanese, Traditional and Simplified Chinese, Korean, Spanish, French, German, Brazilian Portuguese, Russian and Indonesian. Collection records and photos stay on your device; there is no built-in cloud sync. Service dates do not schedule reminders. Network time accuracy depends on network and device conditions. Acoustic results are estimates affected by the environment, placement and phone audio clock; they do not replace a professional timegrapher or certification.
UTC NOW
Easily convert UTC dates and times to your local time, and vice versa. This utility app features a simple interface and a small file size for efficient use. It offers ad-free functionality.
- UTC to local time conversion
- Local time to UTC conversion
- Simple interface
- Small file size
- Ad-free experience
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UTC NOW converts UTC date and time to your local time, and back again. Pick a date and time in UTC and the matching local time appears instantly. Or pick your local date and time and see the UTC equivalent. Both directions work the same way, on their own tab. WHY UTC NOW - Simple interface. Two tabs, nothing to learn. - Small file size. - No ads. - No account and no sign-up. - Works offline. No network connection is used at any point. WHO IT IS FOR - Developers reading server logs, timestamps, and CI output in UTC - Pilots, sailors, and radio operators working in UTC / Zulu time - Anyone scheduling meetings or calls across time zones Your local time zone is taken from your device settings, so there is nothing to configure. Open the app and it is ready.
Screenshots
Verdict
The clearest difference is in-app purchases: UTC NOW at none against GMT Time's 1. UTC NOW also leads on ads (none vs shown) and update cadence (every 4 months vs every 28 months). On price, device support and iOS requirement 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. GMT Time sells 1 one-off in-app purchase. UTC NOW asks for nothing beyond the download.
GMT Time ships an update every 28 months, UTC NOW every 4 months. The most recent releases landed on October 30, 2026 and October 18, 2026 respectively.
| Parameter | GMT Time | UTC NOW |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (38 ratings) — better | — |
| Number of ratings | 38 — better | — |
| Update frequency | Every 28 months | Every 4 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 26 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | MingChun Chien | Masashi Yasaka |
In-app purchases
GMT Time
- Time117 Pro$0.99
UTC NOW
No in-app purchases









