# Lumière Signal — Learn Morse, Signal SOS

> Learn Morse, Signal SOS (iPhone/iPad app by Linh Phan Nhat Khanh.)

- Source: https://appshunter.io/ios/app/lumiere-signal/id6770037841 (this page in markdown: same URL + `.md`)
- Developer: [Linh Phan Nhat Khanh](https://appshunter.io/developer/1777727575)
- Category: Education, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-05-20
- Data updated: 2026-05-30
- User reviews in markdown: https://appshunter.io/ios/app/lumiere-signal/id6770037841/reviews.md

## What is Lumière Signal?

Lumière Signal is a Morse code studio and emergency signaling toolkit — designed for learners, ham radio operators, scouts, hikers, and anyone who wants to communicate when words or screens fail.

Type a message and watch it transmit in proper international Morse. Broadcast a continuous SOS distress beacon. Practice tap-tempo timing for CW work. Or turn your screen into a colored signal lantern for visibility, ambience, and identification at night.


— MORSE CODE STUDIO —

MORSE KEYBOARD
Type any message and Lumière converts it to ITU international Morse code. Each character transmits at your chosen WPM (words per minute). Use it to send a quiet hello, leave a coded note for a friend, or practice reading Morse by sight, sound, and feel.

TAP-TEMPO TRAINER
Tap the screen at the rhythm you want and Lumière locks onto the beat from 1 Hz to 20 Hz. Useful for CW timing practice, drilling dits and dahs at a steady pace, or syncing visual signals to a metronome.

SOS DISTRESS BEACON
One-tap continuous transmission of the international SOS pattern (· · · — — — · · ·). The pattern Apple's own Emergency SOS does not include — a true, looped, hands-free distress signal designed for being found.


— SIGNAL LANTERN —

SCREEN SIGNAL
Eight calibrated paint tones — ivory, amber, ruby, jade, ocean, violet, blackout, daylight — turn your full screen into a colored signal surface. Use ruby for night-vision preservation, amber for fog visibility, jade for identification at a meet-up, or blackout to kill ambient screen glow without locking the device.

VISIBILITY BEAM
A steady output mode with a smooth 5%–100% intensity slider. Built for cyclists, runners, and dog walkers who need to be seen on dark roads — not for general illumination.


— PRESETS YOU CAN SHARE —

Bookmark any combination of mode, timing, intensity, and paint tone as a named preset. Recall it in one tap. Share it with a friend through a clean lumiere:// link — perfect for agreeing on a meet-up signal, a coded knock, or a group identification color before an event.


— CRAFTED FOR DAILY USE —

• Editorial dark interface with warm amber accents
• Haptic feedback on every interaction so signaling works without looking
• Adaptive contrast, large tap targets, full VoiceOver support
• Lightweight, fast, respectful of your battery
• Works offline — no account, no tracking, no ads, no third-party SDKs


— PRIVACY FIRST —

Lumière Signal never records video or photos. Camera permission is requested only so the app can toggle the LED for Morse and signal output. No analytics, no tracking, no data ever leaves your device. Your presets stay on your phone.


— BUILT FOR —

• Morse code learners and CW radio operators
• Search-and-rescue, scouts, and outdoor educators
• Emergency preparedness kits and roadside breakdown response
• Backcountry hikers signaling line-of-sight at dusk
• Boaters, paddlers, and pilots practicing visual signal protocols
• Cyclists and night runners who need a visibility marker
• Anyone learning to read Morse by sight, sound, or feel


— SUPPORT —

Questions or feedback? Email pnkhanhlinh0206@gmail.com — we read every message.

Privacy Policy: https://pnkl26.web.app/privacy-policy
Terms of Use: https://pnkl26.web.app/terms-of-service


Lumière Signal is not a flashlight. It is a Morse studio and signal lantern that happens to use light as its medium.


## Version history (last 1 release)

### 1.0.0 — 2026-05-20

No release notes.

## More apps by Linh Phan Nhat Khanh

- [AI Note Taker: Audio Notes](https://appshunter.io/ios/app/ai-note-taker-audio-notes/id6737747476)
- [Controller Fly for DJI Drones](https://appshunter.io/ios/app/controller-fly-for-dji-drones/id6752404884)
- [Quick Note: Notepad & Widget](https://appshunter.io/ios/app/quick-note-notepad-and-widget/id6756231129)
- [Year Plan - Goal Planner](https://appshunter.io/ios/app/year-plan-goal-planner/id6760195784)
- [Sift Text Diff](https://appshunter.io/ios/app/sift-text-diff/id6771259815)
- [Quill: Daily Diary](https://appshunter.io/ios/app/quill-daily-diary/id6771382858)

All apps by Linh Phan Nhat Khanh: https://appshunter.io/developer/1777727575

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-30.*