Frequency Generator vs FlashSOS Emergency Flashlight

Frequency Generator turns your iPhone into a precise, studio-clean tone source — for sleep, focus, relaxation, and sound exploration. Dial in any frequency from a deep 1 Hz rumble to a 22,000 Hz shimmer, shape its character, and press play. WIND DOWN AND SLEEP Mask traffic, chatter, and a restless mind with smooth white, pink, or brown noise. Start it playing, lock your phone, and let it run all night in the background. FIND YOUR FOCUS Drop into deep work with binaural beats and isochronic tones, or let steady noise blur out distractions around you. Made for studying, writing, and long concentration sessions. RELAX, MEDITATE, RESTORE Play the tones people reach for to unwind — including 432 Hz, 528 Hz, and the full set of Solfeggio frequencies — as a calm backdrop for meditation, breathwork, or simply slowing down. PLAY ANY NOTE Sound any pitch across nine octaves (C0–B8) as a clean reference tone, and set your concert pitch anywhere from 432 to 446 Hz. Ideal for tuning by ear, training your ear to intervals, or checking a note on the fly. EXPLORE THE FULL SPECTRUM Sweep all the way up to 22 kHz to hear the high and ultrasonic frequencies your ears, headphones, and speakers can reproduce. Shape the timbre with sine, square, sawtooth, or triangle waveforms. PRECISE, EFFORTLESS CONTROL Set an exact frequency down to the hertz, fine-tune it on a smooth slider, and switch sounds instantly. No clutter, no setup — just the tone you want, the moment you want it. PICK UP WHERE YOU LEFT OFF Every tone you play is saved to Recents. Pin your favorites, give them names, and replay any setup with a single tap. KEEPS PLAYING Full background audio with lock-screen and Control Center controls, so your sound stays with you while you get on with everything else. Frequency Generator is free to use, with an optional Pro upgrade that unlocks every waveform and noise color, binaural beats and isochronic tones, and the Solfeggio and musical-note presets. Privacy Policy: https://frequency-analyzer.com/privacy-policy-frequency-generator/ Terms of Use: https://frequency-analyzer.com/terms-and-conditions-frequency-generator/

■ 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/