Signal Light is made and published by Bryan Wu. AppBrain is an independent app data site and isn't affiliated with Bryan Wu. The app name, icon, screenshots and description belong to Bryan Wu and are shown as published on the App Store.
AppBrain's verdict
Established- Rating on App Store
- 4.00
- 1 ratings
- Last updated
- May 28, 2026
- Size
- 20.8 MB
It doesn't have enough ratings yet to judge what users think.
User feedback
Ratings and reviews on the App StoreComments on Signal Light for iOS
We don't have enough comments to show example comments. Please check back later.
Store listing
By Bryan Wu, from the App Store
Description by Bryan Wu Written by the developer, not by AppBrain. Click to read.
Camper, Sailor, Soldier, Spy
A handy tool for campers, scouts, boaters (and yes, spies)!
Use it to communicate with distant friends using Morse code, tap out a beat for a human-powered strobe light, or get the attention of rescuers.
This app is based on the old mechanical “signal lamp” which is a manually-controled shuttered spotlight used on warships to communicate securely while maintaining radio silence.
Modern navies still use signal lamps, but now use infrared wavelengths and night vision goggles!
Extra fun:
Put a paper towel tube on the flash to make a tight spotlight and you’ve got a line-of-sight communication tool that only you and your partner can see.
p.s. SOS is . . . – – – . . .
Safety and technology
Found in the app by AppBrain- Price
- $0.99
- App size
- 20.8 MB
- Content rating
- Everyone
Technologies used by Signal Light
Releases
Updates seen on the App Store- Version
- 1.0.5
- Launched
- November 2015
No changelog data
Alternatives
Similar apps and more from Bryan WuAlternatives to Signal Light
More from Bryan Wu
Rankings
App Store top chartsApp Store Rankings for Signal Light
About the app and developer
About Signal Light
Signal Light is an utilities app developed by Bryan Wu.
What is the rating of Signal Light?
Signal Light is rated 4.00 out of 5 stars, based on one rating ratings.
Is Signal Light free?
Signal Light costs $0.99. The app size is 20.85 MB. The latest version available is 1.0.5. The last update was on May 28, 2026.
What are the requirements for Signal Light?
The app has a content rating of Everyone. The app has been available on the App Store since November 2015.
Developer information for Bryan Wu
Address: