Frequency Analyzer Spectrum vs KarmaMeter

Frequency analyzer for musicians, audio engineers, and the audio-curious. Frequency Analyzer turns your iPhone into a complete real-time audio toolkit — see exactly what frequencies are in any sound, in true engineering accuracy, with zero setup. LIVE SPECTRUM The live audio spectrum analyzer paints every frequency from 20 Hz to 20 kHz, frame by frame, so you can watch sound move. Switch to Waterfall view to see frequency content evolve over time — perfect for hunting down a buzz in your room or finding the resonant frequency of a speaker. Tap any peak to lock a marker on it. As a pure spectrum analyzer it shows you the dominant tone in big, easy numbers. PITCH METER Need to know exactly what note you're playing? The pitch meter is a high-precision frequency meter that detects any frequency in Hz with cents-of-a-semitone accuracy. Built-in tunings for guitar, bass, ukulele, and violin. Use it as a chromatic tuner, a vocal tuner, or just as a pure sound frequency analyzer when you need to identify a tone in the air. LOUDNESS METER Switch the meter into Loudness mode and Frequency Analyzer becomes a calibrated decibel meter with A-weighted, C-weighted, or Z-weighted readings — the same modes you'd find on a professional sound level meter. Track peak and average dB across a session. Use it to check whether your room is too loud, your gear is too hot, or the office really does need a quieter coffee machine. TONE GENERATOR The built-in tone generator covers 20 Hz to 20 kHz with sine, square, triangle, and saw waveforms. Send any frequency to your speakers in seconds — handy for testing studio monitors, finding speaker rattles, referencing a pitch, or feeding a signal into the spectrum analyzer for calibration. LOG SWEEP The log frequency sweep slides smoothly from 20 Hz to the top of human hearing in 5, 15, 30, or 60 seconds. Pair it with the audio spectrum analyzer in another room to find weak driver frequencies, sympathetic resonances, or "the one" buzz that's been driving you mad. HEARING TEST The 8 kHz to 20 kHz hearing test tells you the highest frequency you can still hear and gives a quick age-related estimate. Use headphones for accurate results. RECORD AND REPLAY Capture 10 seconds of audio at any time. The replay engine plays it back through the same FFT pipeline so you can analyze the frequency content of a moment that already passed — replay it in the audio frequency analyzer view at full resolution. SESSIONS Every analysis session is saved automatically — dominant frequency, min, max, average, peak dB. Look back at what your room sounds like, how high you sang, or how loud last night really was. WHY FREQUENCY ANALYZER • Pure audio engineering accuracy — Hann-windowed FFT at 44.1 kHz • Real-time, low-latency rendering • Works fully offline, no account, no subscription, no ads • Clean, focused dark UI built for the iPhone • Five tools in one frequency analyzer: spectrum, meter, generator, sweep, hearing test

What if every purchase you made could help create a better world? KarmaMeter is the app for conscious consumers, giving you instant, AI- powered insight into the ethical, environmental, and social impact of any product you buy. Simply point your camera at any product, photo, or label. In seconds, KarmaMeter's AI analyzes data from reputable public sources and delivers a Happiness Index Score — a rating that tells you what your money supports. THE HAPPINESS INDEX — SIX DIMENSIONS OF TRUTH Every score breaks down across six critical categories: * Environmental & Carbon Footprint: Emissions, sustainable practices, resource conservation, and climate commitments. * Packaging: Recyclability, renewable materials, plastic avoidance, and eco- friendliness. * Labor Rights & Worker Conditions: Safe environments, fair labor practices, worker protections, and certification standards. * Wages & Fair Pay Living wages, benefits, and economic practices that support workers and farming communities. * Human Rights & Transparency: Supply chain ethics, diversity commitments, third- party audits, and full origin disclosure. * Animal Welfare: Cruelty-free practices, vegan-friendly sourcing, and freedom from animal exploitation. Each category is scored individually, with full data sourcing visible, so you always know exactly why a product scores the way it does. No greenwashing. Just clarity. YOUR PERSONAL KARMA SCORE KarmaMeter doesn't just rate products, it tracks your journey as a conscious consumer. Every scan you choose contributes to your personal Karma Score, reflecting the cumulative impact of your purchases over time. Watch your score grow as your choices improve. See your values come alive in your shopping habits. VOTE WITH YOUR MONEY Every purchase is a vote. When consumers consistently choose ethical products, companies are pressured to raise their standards, increase transparency, and abandon harmful practices like child labor, pollution, and exploitation. KarmaMeter turns that pressure into a movement, one scan at a time. WHY KarmaMeter? * Instant results, no waiting, no research rabbit holes * AI-powered analysis from trusted, reputable public data sources * Full score breakdown with visible sourcing for every category * Personalized impact tracking across all your scans * Works globally, strongest coverage for major international brands * Clean, intuitive design built for everyday use * Continuously updated as new data becomes available. WHAT OUR COMMUNITY IS SAYING “KarmaMeter is pure genius. With just one tap, it helps me instantly rate any product I’m considering and find the absolute best option that aligns with my values and lifestyle. Knowing I’m choosing ethical sources and making a real difference feels incredible, truly amazing!” — Judith B “KarmaMeter has become one of my favorite apps, I check it almost every day. It’s opened my eyes to the real impact of the products I buy: from environmental effects and wasteful packaging to human rights and animal welfare. This simple tool has been a true game-changer, transforming me into a far more conscious and intentional consumer.” — Gregory B “The KarmaMeter is amazing! It’s a very informative and accurate tool in supporting conscious buying habits that support health, well being, and good economic practices! It allows me to make choices and gives me peace of mind when choosing products!” — Dane S. “Its really fun and easy to use!” Michael V THE WORLD GETS BETTER ONE CHOICE AT A TIME KarmaMeter exists because we believe informed consumers change the world. Not through grand gestures, but through the thousands of small purchasing decisions made every single day. When you know better, you choose better. And when enough people choose better, companies have no choice but to do better. Download KarmaMeter today. Scan something. See the truth. Good choices make the world happier. That’s good karma. Terms: https://karmameterapp.com/terms-and-conditions/