Audio Spectrum Pro vs Pocket Tempo

A professional audio toolkit for live sound engineers. Audio Spectrum Pro is a complete measurement suite on your iPhone: spectrum analyzer, chromatic tuner, oscilloscope, loudness meter, test-signal generator, and RT60 reverberation time measurement. Everything in one app, with a dark interface built for the stage and the concert hall. SPECTRUM ANALYZER Real-time spectrum from 50 Hz to 16 kHz on a logarithmic scale. Automatic peak detection highlights problem frequencies instantly. The "EQ Suggestions" panel tells you which band to cut and by how many decibels - before feedback ever happens. CHROMATIC TUNER High-precision pitch detection accurate to hundredths of a cent. Supports guitar, bass, violin, viola, cello, ukulele, mandolin, banjo, and a chromatic mode. Adjustable A4 reference, capo support, and a noise gate to reject bleed from the PA. OSCILLOSCOPE Real-time waveform display for signal-integrity checks, phase inspection, and clipping detection. The first thing you reach for when something sounds wrong. LOUDNESS METER Simultaneous RMS and true-peak readout with a scrolling history graph (120 frames). Watch your average level and catch peak spikes before they slam your limiters. TEST-SIGNAL GENERATOR Pink noise, white noise, a logarithmic sine sweep (20 Hz to 20 kHz), or a fixed tone from 50 Hz to 8 kHz - all played through the speaker while the mic keeps analyzing. Tune PA systems, ring out monitor wedges, and find room resonances without a separate signal generator. RT60 REVERBERATION ANALYSIS Tap Start, make an impulse (a clap, a click, or a sine sweep) - the app records the decay, computes T20, and extrapolates RT60. Size up a room's acoustics in seconds and know whether they're working for you or against you. BUILT FOR THE FIELD - Mic gain control with the volume buttons - one hand, while the other stays on the console - Fully dark interface - readable under stage lighting, easy on your night vision - Landscape orientation - lay it on the meter bridge or a side table - Three interface languages: English, Russian, Ukrainian Microphone access is required. A speaker or headphones are needed to play test signals.

Tap it in. Trust every number. Most tempo calculators make you already know the BPM. Pocket Tempo doesn't — tap in time with the real performance (kick, snare, whatever sound is steady) and it locks onto the actual spacing between your taps, telling you if they were steady enough to trust. Reads it as the wrong note value? One tap fixes it — no re-tapping. Already know the tempo? Type it in instead. One anchor gets you every tempo-synced time value — delay, reverb, LFO, and compressor times, all derived from one honest anchor. Studio or stage. Built-in Tips — plain-language help for anyone newer to the terms (free on Delay & Compressor, included on every tab once unlocked) FREE, NO CATCH - Real transient-based tap tempo with a live consistency meter - Manual BPM entry - Half-time / double-time correction - Straight 1/4, 1/8, and 1/16 delay times - Full compressor release calculator — most tempo apps skip this entirely - Built-in metronome click with three sounds - Real time signature support: 4/4, 3/4, 2/4, 6/8, 9/8, 12/8 — correctly reads a 6/8 ballad as a dotted-quarter beat instead of quietly assuming 4/4 - Built-in Tips — plain-language help for anyone newer to the terms (free on Delay & Compressor, included on every tab once unlocked) PRO — $3.99 ONE-TIME, NO SUBSCRIPTION - Dotted & triplet delay subdivisions - Reverb decay + pre-delay - LFO / modulation rates - Gate hold & release - Delay Tower — a real physics-based distance calculator for live speaker placement, not tempo math - Setlist — save, reorder, and rename tempos per song, recall them instantly at a gig - Light and dark themes - Full Tips coverage on every tab, not just two Built by a working audio engineer and educator, for anyone who's ever had to guess a delay time mid-soundcheck.