Blink - Morse Code Flashlight

Offline SOS Torch, Signal Tool

Free · In‑App Purchases

Send SOS, preset phrases, and Morse-style light signals with your flashlight or screen. Built for offline use in camping, hiking, night meetups, and quiet communication. Blink is an offline light signaling app for sending SOS, preset phrases, and Morse-style flash patterns with your iPhone flashlight or screen. When you have no network, need a quiet way to get someone’s attention, or want a simple visual signal within sight range, Blink helps you send short, clear messages fast. It is designed for camping, hiking, night meetups, trail coordination, car-to-car reminders, and other short-range communication scenarios where sound or connectivity may not work well. You do not need to know Morse code before using Blink. Choose SOS, a preset phrase, or enter a short custom message, and the app converts it into a readable flash rhythm. Chinese text can be converted to pinyin before Morse encoding, and you can preview the rhythm before sending. Key Features SOS and preset signals • Send SOS and common emergency phrases quickly • 3-second countdown helps reduce accidental sends • Loop sending with clear stop controls • Live progress, current character, and rhythm display Two sending modes • Flashlight mode uses the rear LED for outdoor and night signaling • Screen mode uses full-screen light for close-range or quiet situations • Adjustable transmission speed for different distances and conditions Preset phrase library • Emergency, outdoor, medical, teamwork, silent communication, and direction phrases • Useful for common requests such as help, stay here, I am safe, need water, and more • Good for pre-arranged signals with friends, teammates, or family Custom messages and text signal tools • Turn short text into a Morse-style timing preview • Estimate transmission duration before sending • Large text, marquee, and flashing text modes for close-range silent cues Camera-assisted flash reading • Point your camera at a flashing light source to help read dot-dash rhythm • Useful for practice, testing, and nearby reception • Results depend on distance, alignment, brightness, motion, and ambient light Night mode and device protection • Red screen flash with reduced brightness for lower glare at night • Warnings or automatic fallback for heat and low battery situations • Pause protection during long repeated sending sessions • Auto-pause when the app goes to the background Blink Pro One-time purchase. No subscription. • Unlock all phrase categories • Save favorite phrases • Add custom phrases and longer custom messages • Customize screen flash colors • Access full history and quick resend • Use higher speed ranges • Adjust loop intervals Useful scenarios • Camping, hiking, and trail coordination • Night meetups and campsite signaling • Quiet, non-verbal reminders • Practice and testing for light-based signaling • Offline backup signaling when connectivity is unavailable Important safety note Blink is an auxiliary signaling tool. It does not contact emergency services, rescue agencies, or personal contacts. In a real emergency, use local emergency numbers, satellite SOS, a whistle, signal mirror, radio, or other more reliable rescue methods when available. Whether a light signal can be seen or understood depends on distance, obstacles, weather, ambient light, battery level, device brightness, receiver attention, and whether both sides understand the intended meaning. Do not rely on Blink as your only emergency option.

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What's New in Version 1.0.3: 1. Auto-Enter Phrase on Launch: - You can now configure Blink to automatically begin countdown and transmit your preferred phrase (defaulting to SOS) immediately upon opening the app—saving critical seconds in emergency and outdoor situations. 2. Flexible Launch Phrase Selection: - Choose any phrase from the emergency, outdoor, or medical phrase libraries as your default launch signal, with automatic fallback to international SOS. 3. Safety & Misfire Prevention: - Features a high-contrast haptic countdown buffer with tap-to-skip for instant transmission, and a one-tap cancel button to prevent accidental misfires. 4. Performance & Localization: - Enhanced flashlight and screen flash stability, with refined multi-language localization and VoiceOver accessibility improvements.

Version 1.0.3

The developer, 荣晖 丁, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer indicated that this app supports the following accessibility features. Learn More

    • Supported Features

      • Larger Text

      • Dark Interface

      • Sufficient Contrast

    Information

    Seller
    荣晖 丁
    Size
    3.2 MB
    Category
    Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    Languages
    English and Simplified Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 MM Studio
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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