Audiofile Calc vs ClickTrack Pro

The audio engineering calculator you've relied on for years — completely reimagined. Audiofile Calc has been rebuilt from the ground up with a modern interface, ergonomic controls, and a new Calc Pro tier that takes your calculations further. Now with a free dB Converter for instant decibel-to-ratio conversions, and Varispeed — the pitch shift BPM calculator our users asked for. FREE CALCULATORS Length – Note Length – Bar Length – Song Length – Beats to Tempo – Time to Samples – Samples to Time – Timecode to Time – Compare Tempos – Change Tempo – Add Times Pitch – Note Name to Frequency / MIDI / Wavelength – Frequency to Note Name / MIDI / Wavelength – Wavelength to Frequency / Note Name / MIDI Timecode – Frames to Timecode – Convert Timecode – Change Timecode Electric – Compare Power – Compare Voltage – NEW: dB Converter — turn any decibel value into its voltage (amplitude) and power ratios Acoustics – Distance to Time – Delay – Time to Distance – Sound Pressure Level (SPL) – Panning – PAG-NAG Files – File Size CALC PRO — $4.99 one-time Unlock a suite of advanced calculators built for professional engineers and producers: – NEW: Varispeed — tape-style and sampler speed changes, where tempo and pitch are coupled. Enter any BPM change and get the pitch shift in semitones, sampler-ready semitones + cents, and speed percentage – LUFS Target — streaming loudness compliance for Spotify, Apple Music, YouTube, and broadcast (EBU R128) – Nyquist Frequency — sample rate requirements, aliasing thresholds, anti-aliasing filter cutoffs – Equal Loudness — Fletcher-Munson curves, equal-loudness compensation – Cable Attenuation / Impedance — signal loss over cable runs, impedance matching – Batch Conversion — sweep values through any calculator simultaneously – PDF Share — export any calculation as a clean, professional PDF ready for clients, session notes, or technical documentation One-time purchase. No subscription. Audiofile is a boutique technology company building precision tools for the world's musicians and engineers.

ClickTrack is a precision metronome built for musicians who take their practice seriously. FREE FEATURES METRONOME Practice with a rock-solid metronome from 40 to 240 BPM. Choose from standard and custom time signatures, toggle accent beats, and get real-time visual feedback with the beat flash indicator. Adjust haptic intensity (light, medium, or strong) to feel every beat through your device. TAP TEMPO Tap your way to the right BPM — ClickTrack calculates the tempo from your taps in real time. BAND SYNC Rehearse in perfect sync with your whole band. Band Sync uses standard Bonjour peer-to-peer networking to share tempo and start/stop commands across nearby iPhones, iPads, and Android devices — one device leads, everyone follows. Discovery stays reliable even on busy Wi-Fi networks, and you can cancel a session search at any time with a single tap. APPLE WATCH Control your metronome from your wrist. The companion Watch app lets you start, stop, and adjust tempo without touching your iPhone. WIDGETS & LIVE ACTIVITY Launch a preset or check your practice stats right from the Home Screen, Lock Screen, or Dynamic Island. CLICKTRACK PRO (ONE-TIME PURCHASE) SONG PRESETS Save tempo, time signature, and accent settings for every song in your setlist. Link a song from your Apple Music library to a preset and ClickTrack Pro will start playing the track automatically when you launch it — perfectly synced to your metronome. SUBDIVISION LAYERS Go deeper than a simple click. Layer eighth notes, triplets, and sixteenth notes on top of the main beat, each with its own independent volume. A live beat grid visualizes every subdivision so you can hear and see exactly where you are in the measure. AUTO-STOP AFTER Set the metronome to stop automatically after a specific number of measures — perfect for looping practice sections or focused drilling. PRACTICE TRACKING Every session is logged automatically. See total session duration, active play time, tempo range, and a full practice history with BPM progress charts. Set a goal tempo and watch yourself improve over time. Schedule recurring practice reminders to stay consistent. CHROMATIC TUNER Tune up before you play. Supports 6, 7, and 8-string guitars and 4, 5, and 6-string bass with a full-string tile view showing real-time pitch detection for every string at once. Multiple standard and alternate tunings included. The entire tuner view scrolls in landscape, so every control stays within reach no matter how you hold your device. ACCESSIBILITY Full VoiceOver support throughout — every control has a descriptive label, and the tempo display supports swipe-to-adjust so you can change BPM without taking your eyes off your instrument. Beat indicators and the tuner announce updates automatically. All animations — including the beat flash, beat grid, and tuner needle — respect your Reduce Motion setting. Haptic feedback delivers a physical pulse on every beat, adjustable from light to strong, independent of audio output. Toolbar buttons support the Large Content Viewer, and album artwork renders correctly with Smart Invert Colors. LANGUAGES Fully localized in 9 languages: English, Español, Français, Deutsch, Italiano, 日本語, 한국어, Português, and 中文简体. Switch languages in-app at any time — no trip to System Settings required. ONE-TIME PURCHASE. NO SUBSCRIPTION. Upgrade to ClickTrack Pro once and own it forever.