AudioEngineerToolkit
dB, delay, phase, RT60, BPM
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$4.99
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About
A complete set of offline calculators for audio engineers — on stage, in the studio, no internet required. No login, no ads, no tracking.
■ Electrical
· Ohm's Law calculator
· Power calculator
· Speaker impedance (series/parallel)
· dB ↔ power ratio converter
■ Delay
· Distance ↔ Time ↔ Phase
· Haas Effect zone finder
· Multi-zone speaker delay alignment
· BPM-based reverb pre-delay
■ Acoustics
· Frequency ↔ Period ↔ Wavelength ↔ Quarter-wavelength
· Octave band calculator
· Distance ↔ time delay
· Room volume calculator
· Room mode calculator
· RT60 reverberation time
■ Tempo & Pitch
· Tap tempo (BPM) finder
· Note length calculator
· Playback speed ↔ pitch converter (turntable-style)
· Loop BPM finder
· Bar duration calculator
· Sample rate / buffer size latency calculator
Keep your go-to calculators in the Favorites tab and open them in one tap.
Available in Korean, English, Japanese, Spanish, Simplified Chinese, German, Brazilian Portuguese and French. Runs on iPhone, iPad and Mac.
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What's New in AudioEngineerToolkit
1.1.5
November 5, 2026
Calculation history and copy: copy or save a result and it stays in Recent History on the Favorites screen. Tap it to return to that calculator with your values filled back in. iPhone Duo layouts are refined so fields that were cut off now fit on screen.
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