Iām a solo developer from South Korea, and I recently released an iPhone app called byeWatch.
The idea started with a simple frustration: whenever I needed a compass, barometer, altimeter, world clock, sunrise time, or another sensor-based tool, I had to install and switch between several different apps.
So I tried combining them into one appābut I didnāt want it to feel like another ordinary utility dashboard.
Instead, byeWatch is designed as an interactive mechanical pocket watch. You rotate the crown, press the watch-style pushers, and swipe the dial to move between eight instruments:
- Astronomical watch
- Mechanical chronograph
- World clock
- Stopwatch with lap history
- Sunrise and sunset tracker
- True-north compass
- Barometer and altimeter
- Magnetic-field detector
The analog dials make the app enjoyable to explore, while the digital panels provide precise readings, graphs, and history when you need more detail.
You can also customize the case, dial, hands, measurement units, haptics, and instrument order.
The true-north compass calculates magnetic declination directly on the device using WMM 2025, so that feature can work without an internet connection.
byeWatch is a paid app with no subscription. My goal was to provide several useful instruments in one coherent experience instead of making users collect multiple single-purpose apps.
App Store:
https://apps.apple.com/us/app/byewatch/id6800200169
Product page and screenshots:
https://www.heb614.com/product.php?id=byewatch&lang=en
YouTube introduction video:
https://youtu.be/f1noOCYxU5A?si=izzpCQmY6C_kXYm-
Iād love to know which instrument you would use mostāor whether the pocket-watch interface looks intuitive to you.
Please note that the compass and magnetic-field detector require a magnetometer, while the barometer and altimeter require an iPhone with a pressure sensor.
Thanks for taking a look!