Clear recording‌ vs Frequency Generator & Analyzer

【Clear recording‌】 is a recording and transcription tool for iPhone that writes down what you say and keeps every audio file easy to find. **Flexible recording** Six recording modes with adjustable format, bit rate, sample rate and channels, so each session matches the room you are in. Tap once to drop a marker at any moment without stopping the recording. **Live transcription** Speech is written out while you record, with sentence breaks added automatically. More than ten languages are available, and the text is saved together with the audio. **Video and audio to text** Pull the audio track from a video in your library or files, or transcribe a recording you saved earlier, then edit the result before you keep it. **Audio toolbox** Convert between MP3, WAV, CAF, AIFF and M4A, reduce background noise, join several clips in order, trim a section, or adjust the volume of a file. **Organized files** Recordings, transcripts and markers stay together. Rename, share or remove an item, and tap a marker to jump straight back to that moment in the audio. Record, read and edit in one place. Download it and keep every conversation in text. Premium account pricing and terms $4.99/week* $39.99/year* *Prices shown are in U.S. dollars. The actual charge may be converted to your local currency depending on your country or region. Payment will be charged to your iTunes account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. The account will be charged for renewal within 24 hours prior to the end of the current period, and the cost of the renewal will be shown. Subscriptions may be managed by the user. Going to the user's account settings after purchase may turn off auto-renewal. Cancelling the current subscription during an active subscription period is not allowed. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://manteendmn.xyz/qingluyin/privacy.html

Turn your iPhone into a professional-grade acoustic laboratory. Powered by the high-fidelity YIN pitch detection algorithm, Frequency Counter delivers instant, real-time audio frequency analysis and tone synthesis with uncompromising engineering precision. Whether you are testing audio equipment, analyzing ambient sound waves, tuning musical instruments, or calculating motor RPM, this app provides the advanced tools you need in a clean, high-contrast visual dashboard. KEY FEATURES 1. REAL-TIME AUDIO ANALYSIS & SPECTROGRAPH High-Fidelity Pitch Detection: Track real-time sound frequencies instantly with exact readouts in Hertz (Hz). Live Oscilloscope Grid: Visualize active sound waves on a sweeping, highly responsive neon coordinate grid. Signal Gain Adjuster: Amplify low-amplitude ambient sounds easily by adjusting the visual height of the oscilloscope lines. Music Note Translator: Automatically convert active frequency measurements to the closest corresponding musical note (based on standard A4 = 440 Hz tuning). 2. ADVANCED STATS & ANALYTICS (PRO) Live Session Tracker: Monitor Minimum, Maximum, and Average frequencies detected during your active scanning session. Integrated Decibel Meter: View current volume levels (dB) directly alongside your frequency readout. RPM Speed Calculator: Measure the speeds of rotating fans, propellers, or motors with a configurable blade multiplier (1 to 8 blades). 3. PRECISION SCAN CONTROLS Freeze Screen: Freeze the active frequency readout and grid at any moment to inspect specific sound intervals. Reset Peak Meter: Instantly clear out the highest recorded peak frequency with a single tap. Start/Stop Engine: Complete control over your microphone input scanning sessions. 4. PROCEDURAL SOUND WAVE GENERATOR (PRO) Real-Time Sound Synthesis: Generate continuous tones supporting four reference waveforms: Sine (Cyan), Square (Green), Sawtooth (Orange), and Triangle (Purple). Tactile Tuning Pad: Fine-tune your output with incremental coarse buttons (-100, -10, -1, +1, +10, +100 Hz). Interactive Sweepers: Seamlessly navigate the human hearing spectrum (20 Hz - 20 kHz) using linear volume and logarithmic sweep sliders. Direct Hz Keyboard: Double-tap the main Hertz indicator to type your exact desired frequency via a dedicated number pad. GO PRO WITH FREQUENCY COUNTER PREMIUM Unlock the full analytical power of your device. Premium subscriptions remove all session limits and unlock: Unlimited scanning sessions and freeze-frame analysis. Full access to the Procedural Sound Wave Generator. Complete Stats Dashboard (Min/Max/Avg Tracker, dB Meter, and RPM Calculator). Choose from our flexible Premium plans: Weekly, Monthly, or Yearly subscriptions. Note: Microphone access is strictly required for real-time frequency analysis. All audio processing is performed locally on your device; your data remains completely private. Choose Your Plan Unlock the full analytical power of Frequency Counter. Get unlimited scanning sessions, full access to the advanced sound wave generator, and real-time tracking tools. Weekly Access — $1.99 / week (Most Popular) Monthly Pass — $4.99 / month Annual Saver — $29.99 / year (Best Value) Cancel anytime in your App Store account settings. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Terms of Service : https://sites.google.com/view/freqmeterterms/home Privacy Policy : https://sites.google.com/view/freqcounterpolicy/home