MintFFT vs Audio RTA

MintFFT is a simple and precise audio spectrum analyzer for iPhone and iPad. Designed with a focus on clarity and calm, it turns your sound into smooth, real-time visuals — without ads, clutter, or unnecessary controls. Features • Real-time FFT spectrum with dB scale • Peak hold and multiple window functions (Hann, Hamming, Blackman, Rectangle) • Pinch to zoom and swipe to pan across frequency ranges • Supports internal and external microphones (USB-C / Lightning) • Works in portrait, landscape, and Split View on iPad • Runs entirely on-device — no recording, tracking, or data collection Privacy First MintFFT processes all audio locally for visualization only. No data ever leaves your device. Simple. Clear. Reliable. Just open MintFFT and watch your sound.

See the live sound spectrum, find frequency peaks and test your speakers with a practical audio toolkit on your phone. For musicians, sound technicians and installers working with PA systems, studios, instruments and car audio. Use the microphone spectrum as a visual aid when checking sound; the app does not automatically equalize your system. Free basic tools: • Real-time microphone RTA/FFT spectrum • Approximate dB level meter • Frequency generator from 20 Hz to 20 kHz • Subwoofer and stereo channel tests • White noise for general testing Audio Tools Pro is a one-time purchase for lifetime access to advanced tools: waterfall/spectrogram, third-octave bands, manual dB offset, PNG/CSV exports, pink noise and advanced waveforms and sweeps. Access stays linked to your store account. Measurements depend on your device microphone and hardware. Manual dB offset aligns readings to a reference meter; it does not provide certified calibration. Use low volume to protect hearing and equipment. The app does not replace a certified sound-level meter or measure calibrated loudspeaker frequency response. Audio analysis runs on your device; purchases require a connection. The store shows the current Pro price.