Clock Setter vs GMT Time
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Clock Setter
This utility app helps you accurately set manual clocks, like on microwaves or watches. It displays the precise current time with seconds and an optional countdown to the next minute, making manual adjustments effortless.
- Precise time display with seconds
- Optional countdown to the next minute
- Effortless manual clock synchronization
- Useful for various devices (microwaves, watches)
- Simple and helpful utility
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Do you get frustrated when your clocks aren't showing the correct time? How about when two clocks in the same room are out of sync by one aggravating minute? Clock Setter is here to save the day! Many electronic devices these days are connected to the Internet and have the ability to synchronize the current time automatically, but you still own devices such as microwaves, ovens, and wrist watches that must be set manually... And accurately! Clock Setter is a helpful utility for doing just that. Clock Setter displays the precise current time, including seconds, with an optional count down five seconds leading up to the following minute. The countdown makes it effortless to focus on the control buttons for setting your device's time rather than missing the exact moment of setting because you needed to be looking at your phone.
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.
Screenshots
Verdict
The clearest difference is in-app purchases: Clock Setter at none against GMT Time's 1. Clock Setter also leads on ads (none vs shown) and update cadence (every 7 months vs every 28 months). GMT Time's advantage is ratings volume (38 vs 5). On price, rating 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. GMT Time sells 1 one-off in-app purchase. Clock Setter asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for Clock Setter against 4.7 for GMT Time. That said, the two scores are not equally well evidenced: GMT Time has 38 ratings behind it against 5, so its average is the more settled of the two.
Clock Setter ships an update every 7 months, GMT Time every 28 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.
| Parameter | Clock Setter | GMT Time |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5 ratings) | 4.7 (38 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 | 38 — better |
| Update frequency | Every 7 months — better | Every 28 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 19 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Aaron Morgulis | MingChun Chien |
Customer experience
Clock Setter
GMT Time
In-app purchases
Clock Setter
No in-app purchases
GMT Time
- Time117 Pro$0.99









