FlashSOS Emergency Flashlight

SOS strobe beacon & morse code

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

One-tap SOS strobe light for night safety. Type any text into Morse flashes, 10 preset rhythms, custom BPM beats and tap recording - flash and haptics perfectly synced. ■ One-Tap SOS Strobe Emergency Signal Long-press to fire the international standard SOS pattern (3-short / 3-long / 3-short) with synchronised flash and haptics. Strobe adjustable from 1 Hz to 20 Hz. Auto-throttles on low battery and cools down if the torch overheats — never dies when you need it most. Mis-touch protection (1.0s–3.0s long-press confirmation) prevents pocket fires wasting juice. Dual sync: camera torch + full-screen colour flash doubles your visible distance at night. ■ Morse Code Encoding Engine Type any text (English, Chinese, digits, or symbols) — FlashSOS auto-encodes it into clean on/off light pulses. 5 playback speeds: 0.5× / 1× / 1.5× / 2× / 4×; base unit duration customisable from 50 ms to 1000 ms. Includes a full printable Morse reference table inside the app. Use it for backcountry distress, covert signals, concert fan light shows, or team codes. ■ Custom Rhythm Editor (Upgrade to Pro — Lifetime Unlock) Three creative ways to build your own flash pattern: ① BPM Beat Mode — slide from 30 BPM to 300 BPM, every beat fires with millisecond-accurate sync; ② Preset Rhythm Library — 10 built-in scene patterns: Heartbeat / Breathing Light / Lighthouse Beacon / Red-Blue Police Siren @ 1Hz / Concert Cheer @ 120 BPM / SOS International Distress / Strobe Alert @ 8 Hz / 4-4 Rave Kick @ 128 BPM / Flickering Candle / Railway Hand Signal; ③ Manual Tap Recorder — tap the rhythm you want on-screen, we capture the exact ON/OFF timeline locally on your device. ■ Why Choose FlashSOS • Runs 100% locally on-device. Your typed text, saved phrases, recorded rhythms and history stay inside your iPhone's encrypted sandbox. Nothing uploads to any server, ever — no internet connection required at all. • Zero privacy footprint. No sign-in, no location requests, no IDFA collection, no background tracking. Only asks for camera (torch LED) permission when you actively tap the flash button, and you can revoke it any time in iOS Settings. • 12 native languages: Simplified Chinese, Traditional Chinese, English, French, German, Spanish, Italian, Portuguese, Russian, Japanese, Korean, Arabic. • Transparent privacy policy: full stand-alone page (linked in-app and on App Store) explains exactly what we do and do NOT do with every iOS permission we request. ■ FlashSOS Pro (one-time unlock or monthly plan) Unlocks all three premium features: Morse Code, Custom Beats and Strobe Warning. The SOS emergency tab stays 100% free forever - life-saving functions are never paywalled. Restore Purchases and Family Sharing work on the same Apple ID. Subscription: payment is charged to your Apple ID at confirmation. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and each renewal is charged at the same price within 24 hours before the period ends. Manage it in Settings > Apple Account > Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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Fix known bugs.

Version 1.4

The developer, 晓强 江, 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

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    晓强 江
    Size
    2.4 MB
    Category
    Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 6 more
    • English, Arabic, Japanese, Korean, Russian, Simplified Chinese, Traditional Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    • FlashSOS Pro Monthly $1.99
    • FlashSOS Pro Annual Subscription $4.99
    • FlashSOS Pro (Morse + Beat Forever) $4.99
    • Learn More
    Copyright
    © 2026 Huan hua
  • 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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