KeyBridge for DJs vs What About Phase?
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KeyBridge for DJs
This tool helps DJs create smoother transitions by suggesting compatible musical keys for their next track. It offers three distinct transition types: energy boost, mood switch, and calm down, all accessible with a single tap. Designed for live performance, it works offline and features a minimalist interface.
- Suggests compatible musical keys
- Three transition types: energy boost, maj/min, calm down
- Works 100% offline
- Zero learning curve for mid-set use
- Full 24-key wheel
- Dark interface for booth visibility
- Haptic feedback
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Stop guessing which track to play next. KeyBridge is the key reference tool built for DJs who want their sets to sound more polished - without memorizing music theory. Here's what the smoothest DJ sets have in common: the tracks share compatible keys. When the next track flows musically from the last one, every transition feels right. When it doesn't, something feels off - even if you can't explain why. KeyBridge gives you the rule in one tap. --- HOW IT WORKS --- Pick the key of your current track. KeyBridge instantly shows you three ways to go next: COUNTERCLOCKWISE (-1) - Bring it down. One step down the wheel. RELATIVE - Switch the mood. Same root, flip between major and minor. CLOCKWISE (+1) - Lift the crowd. One step up the wheel. Tap any suggestion to jump there. Chain transitions. Plan your whole set in minutes. --- WHY DJs LOVE IT --- - Works 100% offline - no signal, no lag on stage - Zero learning curve - tap and go, even mid-set - Full 24-key wheel (12 major + 12 minor) - Built for speed - 15-second auto-return keeps you focused - Haptic feedback - feel the response in your palm - Designed to disappear in the booth - dark interface keeps your eyes adjusted and the atmosphere intact - Retro DJ-hardware aesthetic that looks right next to your gear - iPhone and iPad - use it in the booth, the bedroom, or the bus --- WHO IT'S FOR --- Beginners: Finally understand why some transitions work and others don't. Build your first key-matched set with confidence. Intermediate DJs: Stop relying on memory during live sets. Read the crowd, not your notes. Producers & Remixers: Find compatible keys for mashups, bootlegs, and edits in seconds. --- FREE AND PRO --- KeyBridge is free to download. Free includes the full 24-key wheel, the three core moves (Counterclockwise, Relative, Clockwise), the Spectrum Drive theme and Keep Screen Awake. KeyBridge Pro is a one-time purchase that adds the advanced moves (Diagonal -1 / +1, +5 Lift, +7 Shift), all three colour themes and every auto-return option. No subscription. --- THE PROMISE --- Follow KeyBridge's suggestions for one set. You'll hear the difference immediately. Your transitions will feel tighter, your energy arcs will land, and the dancefloor will stay with you longer. This isn't a theory app. It's a live-performance companion. --- Built by a working DJ for working DJs. No ads. No subscriptions. No data collection. Ever.
What About Phase?
Record short audio clips and transform them into evolving, hypnotic soundscapes. This pocket instrument uses phasing and other processes to create unique, unfolding audio patterns from simple sounds.
- Audio recording and looping
- Ten distinct audio processes
- Radial display of sound patterns
- On-device pitch detection
- Save, share, and revert recordings
- Live control over audio parameters
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Record a few seconds of anything — your voice, a clap, a passing train — and let the app pull it apart in time. What about phase? is a pocket instrument for process music: it loops your recording in two channels and lets them drift out of sync, so simple sounds grow into shifting, hypnotic patterns. Inspired by the tape-phasing experiments of 1960s minimalism, it makes the process itself audible — you set it in motion, then listen as it unfolds. TEN PROCESSES • Phasing — two copies of your loop, one drifting a few cents faster; hear them separate into echo, then canon • Gradual process — a ramp that grows louder and sweeps across the stereo field • Tape loop multiplication — your loop fanned into a detuned chorus • Rhythmic construction — a rhythm assembled hit by hit • Pattern substitution — beats replaced one at a time: silence, octaves, fifths • Resultant patterns — two interlocking rhythms revealing a third • Clapping Music — a pattern rotating against its fixed copy • Pulse / drone — a pulse grid over a deep foundation • Canon — staggered voices entering one after another • Speech melody — a syllable pulsed in speech rhythm and dynamics THE WHEEL A radial display shows what the process is doing: your loop's waveform — or the process's own pattern — wrapped around a circle, left channel in coral, right in cyan, a comet sweeping the playhead. In Phasing you can watch the two rings physically drift apart. Volume and pitch views included, with on-device pitch detection. AUDIO UNIT (AUv3) Every process also comes as an AUv3 plugin for AUM, GarageBand and other hosts: an instrument that plays the process's own demo, and an effect that does the process to whatever you send it. The wheel is the plugin's screen. Each voice has an output of its own, a MIDI note starts the loop over, and Sync can follow the host's transport. A Level control sets how loud every output is, and on the effects BAR sets the loop to one bar of your host's tempo and keeps it there. Look for the maker "Scriptum" in your host. The plugin is part of Pro, a one-time in-app purchase that also includes everything in the full version. Until Pro is unlocked the plugin loads and shows its wheel, but stays silent. MADE FOR EXPLORING • Ten built-in demo takes, one per process, playable from the very first launch • Every take saves with its process and settings; rename, share as WAV, revert • Takes named after where you record them (optional, location used only while in the app) • Live controls: drift in cents, process amount, tempo, sample offset • No account, no ads, no analytics — recordings never leave your device unless you share them Record something small. Let it become something long.
Screenshots
Verdict
The clearest difference is monetization model: What About Phase? at free against KeyBridge for DJs's paid. What About Phase? also leads on update cadence (daily vs every 2 months) and iOS requirement (15.0 vs 26.2). On price, rating, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. KeyBridge for DJs sells 1 one-off in-app purchase and What About Phase? sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for KeyBridge for DJs against 5.0 for What About Phase?. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
KeyBridge for DJs ships an update every 2 months, What About Phase? daily. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.
| Parameter | KeyBridge for DJs | What About Phase? |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 2 months | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.2 | 15.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomocreate, Inc. | Vladimir Gusev |
Customer experience
KeyBridge for DJs
What About Phase?
In-app purchases
KeyBridge for DJs
- KeyBridge Pro$2.99
What About Phase?
- Full Version$0.99
- Pro$3.99
Questions
Is KeyBridge for DJs free?
Is What About Phase? free?
Which has better reviews, KeyBridge for DJs or What About Phase??
Do KeyBridge for DJs or What About Phase? have ads?
Which is updated more often, KeyBridge for DJs or What About Phase??
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