Comparison

MF 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

MF

This app recreates a classic analog effects pedal, offering an 8-band resonant filter array and an animation module for sequencing filter modulations. It's designed to process and creatively alter audio inputs like guitars, vocals, and synthesizers.

Highlights
  • 8-band resonant filter array
  • Sequenced filter modulation
  • Recreation of classic analog pedal
  • Processes various audio inputs
  • AUv3 effects plug-in
Features
Read full description

The MF-105S MuRF is a re-invention of Moog Music’s classic Moogerfooger MF-105 analog effects pedal. The MF-105 MuRF (Multiple Resonant Filter Array), originally introduced in 2004, contained two basic functions: an 8-band array of resonant filters that can be voiced for bass or mid frequency response, and a pre-programmed ANIMATION module that generates sequences of envelopes that modulate the levels of the 8 filters. Designed by Bob Moog and his engineering team, the MF-105 was a direct descendant of the original Moog modular synthesizers, adapted to process, modulate, and play with inputs ranging from guitar, voice, and synthesizer to any imaginable audio source. The MF-105 MuRF has been meticulously recreated as the MF-105S, capturing not only the distinctive sound of the original, but also the organic way in which the parameters interact to create a musical playing experience. The MF-105S is an AUv3 effects plug-in that requires a compatible host or DAW to function.

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
Read full description

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

MF3 screens
KeyBridge for DJs4 screens

Verdict

The call

The clearest difference is price: KeyBridge for DJs at Free against MF's $14.99. MF's advantage is in-app purchases (none vs 1) and ratings volume (14 vs 1). On rating, update cadence, ads and monetization model 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

KeyBridge for DJs is free to download; MF costs $14.99 up front. KeyBridge for DJs sells 1 one-off in-app purchase. MF asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for MF against 5.0 for KeyBridge for DJs. That said, the two scores are not equally well evidenced: MF has 14 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

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

Scorecard4 real differences · 6 level
MF versus KeyBridge for DJs: the parameters behind the verdict, then further details
ParameterMFKeyBridge for DJs
Price$14.99Free — better
Rating4.9 (14 ratings)5.0 (1 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings14 — better1
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better26.2
Further details — not scored
Size27 MB5 MB
Age rating4+4+
DeveloperMoog Music Inc.Tomocreate, Inc.

Customer experience

MF

All ratings13 ratings
Positive92.3%
Neutral7.7%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

KeyBridge for DJs

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

MF

No in-app purchases

1 purchases

KeyBridge for DJs

One-time1
  • KeyBridge Pro$2.99

Questions

Is MF free?
MF costs $14.99, with no in-app purchases.
Is KeyBridge for DJs free?
KeyBridge for DJs is free to download, with in-app purchases available.
Which has better reviews, MF or KeyBridge for DJs?
KeyBridge for DJs is rated higher. MF averages 4.9 out of 5 from 14 ratings, while KeyBridge for DJs averages 5.0 from 1 ratings.
Do MF or KeyBridge for DJs have ads?
Neither MF nor KeyBridge for DJs shows ads.
Which is updated more often, MF or KeyBridge for DJs?
MF ships an update monthly, and KeyBridge for DJs every 2 months. Most recently, MF was updated on October 24, 2026 and KeyBridge for DJs on October 25, 2026.

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