Bomb DJ Tools

BPM, keys, delay & set math

$0.99 · Designed for iPad. Not verified for macOS.

Eight booth-ready DJ calculators in one dark, glanceable app. No ads, no accounts, no data collected. Bomb DJ Tools is a utility suite for DJs and electronic producers — eight precise tools with giant, monospaced readouts you can read from across the booth. Every number is one tap from your clipboard. TOOLS • BPM Counter — haptic tap tempo (median-filtered so a fumbled tap won't wreck the reading) plus audio tempo detection from a track or the mic, with half/double-time alternatives and a confidence score. • Key Mixing — a full interactive Camelot wheel. Enter keys as Camelot (8A), traditional (A minor, F#m) or OpenKey (3m). Compatible keys are color-coded by relationship: perfect, relative, smooth ±1, energy boost/drop. Detect key from audio. • Delay Calculator — tempo-synced delay and reverb pre-delay times in ms and Hz for every note value, dotted and triplet. • Pitch ↔ Tempo — convert percent, semitones and cents in any direction; beat-match two tracks and see the exact pitch shift. • Bars & Set Timer — bars to seconds and cumulative set length at any tempo and time signature. • Note ↔ Frequency — note names to Hz and back, with cents deviation and adjustable reference pitch. • dB Converter — amplitude and power ratios, voltage, and gain staging math. • Scales & Chords — every scale and chord in the selected key, synced with Key Mixing. BUILT FOR THE BOOTH • Dark glass interface tuned for low light • Shared session BPM and key across every tool • Haptic feedback on tap tempo • Works fully offline — no account, no sign-in • Zero data collection. Audio analysis runs entirely on your device and is never uploaded. Made by a DJ, for DJs.

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The developer, Justin Trushell, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

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    Accessibility

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    Information

    Seller
    Justin Trushell
    Size
    1.1 MB
    Category
    Music
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Justin Trushell
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.