Comparison

Metronom 137 vs KeyBridge for DJs

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Metronom 137

Features
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Metronom 137 keeps you in time - all along your setlists. Worn on your wrist, it vibrates on every beat so you can feel the tempo during practice, on stage, or in the rehearsal room. Adjust the BPM with a single swipe, tap in the center for tap tempo, or change the time signature with a flick. NEW: TEMPO CHECK Not sure if you're actually playing on tempo? Tempo Check listens to what you're playing and compares it in real time to your target BPM, with a live graph showing how close you are. A short session is free to try; unlock unlimited Tempo Check sessions with a one-time purchase. APPLE WATCH • Metronome from 20 to 320 BPM • Swipe to adjust tempo instantly, or use the Digital Crown for fine control • Tap tempo - tap in the center of the screen • Time signatures: 4/4, 3/4, 6/8, and more • 4 feedback modes: vibration + sound (iPhone only), sound only, vibration only, or silent (discrete) • Save songs to your setlist with their BPM and time signature • Skip to the previous or next song with one tap • See and control Tempo Check right from your wrist, including starting or stopping a session remotely iPHONE COMPANION APP • Full metronome with the same features as the Apple Watch app, plus a redesigned, easier-to-read track list and setlist browser • Multiple named local setlists, reorderable with a simple drag • Multiple setlists from The Live Setlists (see below) • Tempo, time signature, setlist selection, and Tempo Check all stay perfectly in sync between iPhone and Apple Watch in real time - whichever device you touch, the other follows THE LIVE SETLISTS INTEGRATION (optional) Metronom 137 partners with The Live Setlists - a platform where you build and share setlists with your bandmates. Any setlist you create there is available directly in the app. Load a setlist in one tap, and when you adjust the tempo or time signature during rehearsal, the change can be saved back so your whole band always sees the latest values. No account required to use the app, but account needed to access The Live Setlists setlists. Your music, your tempo, on your wrist.

About

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.

Highlights
  • 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.

Screenshots

Metronom 1373 screens
KeyBridge for DJs4 screens

Verdict

The call

The clearest difference is in-app purchases: Metronom 137 at none against KeyBridge for DJs's 1. Metronom 137 also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (18.6 vs 26.2). On price, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. KeyBridge for DJs sells 1 one-off in-app purchase. Metronom 137 asks for nothing beyond the download.

UpkeepUpdate frequency

Metronom 137 ships an update every 2 weeks, KeyBridge for DJs every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 6 level
Metronom 137 versus KeyBridge for DJs: the parameters behind the verdict, then further details
ParameterMetronom 137KeyBridge for DJs
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Paid
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.6 — better26.2
Further details — not scored
Size6 MB5 MB
Age rating4+4+
DeveloperThibault DucrayTomocreate, Inc.

In-app purchases

None

Metronom 137

No in-app purchases

1 purchases

KeyBridge for DJs

One-time1
  • KeyBridge Pro$2.99

Questions

Is Metronom 137 free?
Metronom 137 is free to download, with no in-app purchases.
Is KeyBridge for DJs free?
KeyBridge for DJs is free to download, with in-app purchases available.
Do Metronom 137 or KeyBridge for DJs have ads?
Neither Metronom 137 nor KeyBridge for DJs shows ads.
Which is updated more often, Metronom 137 or KeyBridge for DJs?
Metronom 137 ships an update every 2 weeks, and KeyBridge for DJs every 2 months. Most recently, Metronom 137 was updated on October 24, 2026 and KeyBridge for DJs on October 25, 2026.

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