Prometheus vs Clock Buddy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prometheus
Visualize your life as a continuously updating clock, down to 10 decimal places. Track unique milestones and explore life statistics. Available on iPhone and Apple Watch with customizable widgets and complications.
- Decimal age clock
- Life milestone countdowns
- Detailed life statistics
- Apple Watch app and complications
- Home and Lock Screen widgets
- Live Activities support
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Your time is precious. See it. Prometheus turns your age into a living clock, updating continuously to 10 decimal places. Count down to numbers you will only pass once, explore your life in weeks and statistics, and keep time visible across iPhone and Apple Watch. YOUR LIFE, LIVE • See your decimal age or a detailed breakdown of years, months, days, hours, minutes, and seconds • Count down to your billionth second, 10,000th day, next trip around the sun, and other once-in-a-lifetime milestones • Get an optional alert at the exact moment a milestone arrives • Explore estimated heartbeats and breaths, lunar cycles, distance traveled through space, and more • See your entire life as one dot for every week ON EVERY SCREEN • Apple Watch app and watch face complications • Home Screen and Lock Screen widgets • Live Activities on the Lock Screen and Dynamic Island • Shareable cards for Stories, Reels, and more SET UP ONCE Enter your birth date and time. Prometheus handles the rest. Your birth data stays on your devices, and no account or sign-in is required. Named after the Titan who gave humanity fire and knowledge, Prometheus is a reminder to see and use your most precious resource: time.
Clock Buddy
Easily track multiple world times directly on your Apple Watch. Customize city labels, abbreviations, and colors for quick identification. Choose between compact or dense complications for your watch face.
- Display multiple world times
- Customizable city labels and colors
- Rectangular watch face complications
- Compact and dense complication options
- Minute-by-minute time updates
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World Clock Buddy keeps the times you care about right on your Apple Watch. Add up to six cities, then check them from the watch app or from a rectangular complication on your watch face. Each city gets a clear label, airport-style abbreviation, and color, so you can spot London, New York, Tokyo, or home without doing the usual mental math. Choose the compact complication for a cleaner glance, or the dense one when you want more cities visible at once. Times update by the minute and stay easy to read, even when your wrist is only up for a second. Built for travelers, remote teams, long-distance friends, and anyone who just wants world time without opening a full app.
Screenshots
Verdict
The clearest difference is update cadence: Clock Buddy at every 4 days against Prometheus's every 3 months. Prometheus's advantage is iOS requirement (17.6 vs 26.0). On price, rating, ratings volume and 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
Both are free to download. 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 Prometheus against 5.0 for Clock Buddy. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Prometheus ships an update every 3 months, Clock Buddy every 4 days. The most recent releases landed on September 15, 2026 and June 26, 2026 respectively.
| Parameter | Prometheus | Clock Buddy |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 17.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 5 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Wouter Stierhout | Martian Code Oy |
Customer experience
Prometheus
Clock Buddy
In-app purchases
Prometheus
No in-app purchases
Clock Buddy
No in-app purchases





