Comparison

Fuse Void Drum Machine vs Groove Number

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

Head to head
About

Fuse Void Drum Machine

Features
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FUSE VOID MK1 Designed for real-time creativity. Everything is instant. Fuse Void MK1 is a professional, offline-first iOS groovebox engineered for zero-latency live performances. With 113 high-fidelity one-shot samples, micro-timing precision, and chaos-driven FX, it transforms your iPad and iPhone into a standalone hardware-class drum machine. No menu diving. Zero latency. Touch optimized. FULL TECHNICAL SYSTEM ARCHITECTURE: / CORE SEQUENCING • Sequencer: 16-Step High Precision Engine • Micro Timing: Per-step groove offset and swing control • Patterns: 126 save/load slots • Chaining: A–H Bar-aligned pattern linking • Switching: Bar-aligned Quantized Transitions • Assignment: Per-step sample / sound assignment / AUDIO & PERFORMANCE • Samples: 113 One-shot High Quality Library (Silicon Native) • Mixer: 11-Channels with Per-Channel Mute • Chaos FX: Kaos-style XY Pad with Reset behavior (lo-fi crush, sidechain pump, filtered delays) • Dynamics: Swing control & Accent system • Matrix: Full pattern multi-track editor • Integration: MIDI Export & Real-time REC Engineered for Apple Silicon. Core Audio integration ensures 0ms latency. No subscriptions. No tracking. Just pure rhythm.

About

Groove Number

Analyze the rhythmic feel of your music with detailed swing percentage, BPM, and key analysis. Visualize your groove through various graphical displays and export it as MIDI for use in your DAW. All analysis is performed on-device for privacy.

Highlights
  • Swing % analysis
  • BPM estimation
  • Key detection
  • Multiple visualization modes
  • Audio file analysis
  • Live microphone analysis
  • Groove to MIDI export
  • Siri integration
Features
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how swung is your track? groove number gives you the number. drop in a song, record a clip, or open the live mic — groove number listens and tells you the one thing drum machines flatten and great players bend: the groove. 50% is dead straight. ~66% is full triplet swing. most music that feels good lives in between, around 54–62%. now you can see it. and it's not just the number. what it reads • swing % — the hero. one honest number for how far off the straight grid the groove sits. • bpm — dual-estimator with an octave guard, so 174 never gets called 87. nudge it ×2 / ÷2 or tap the tempo to lock it, and the swing recomputes against the corrected grid. • key — chroma + krumhansl-schmuckler with a tuning estimate, shown with a confidence read and the runner-up key, so a close call never hides. four ways to see it • meter — the number, front and center: swing %, bpm, and key in one calm readout. • swing grid — the signature view. every onset plotted against the straight 8th/16th grid, colored on-time, late, or rushing. you can see the pocket. • spectrogram — mel-scaled heatmap, quiet to loud, low to high, with a frequency + dB scale. • chromagram — the 12 pitch classes over time, tonic marked. how it listens • a file you drop in or pick (mp3, m4a, aac, wav, aiff, flac) • a clip you record — it listens and stops on its own the moment the groove locks • the live mic — a running bpm + swing read in the room, with a VU level meter and a live spectrogram one more thing • groove → midi — export the groove as a midi clip, swing baked into the note timing. drop it on a drum track in any daw and it plays your pocket. hands-free • siri: "what's the groove number of this song" records a clip and stops on its own. "start listening in groove number" opens live. "what was the last groove number" reads you the last result. • shortcuts: analyze audio file returns swing, bpm and key for any file, so you can tag a folder of samples by bpm. open in groove number sends a file straight in. built to be calm and honest • fully on-device. your audio is analyzed right on your iphone, ipad, or mac. nothing is uploaded. nothing is stored on a server. • no account. no sign-up. no ads. no tracking. • strongest on four-on-the-floor and electronic music. live, acoustic, and rubato material is harder — so groove number always shows its confidence and hands you the ×2/÷2 and tap-tempo overrides. wrong calls stay visible, never silent. one number for the feel of a track. plus everything you need to trust it.

Screenshots

Fuse Void Drum Machine3 screens
Groove Number4 screens

Verdict

The call

The clearest difference is update cadence: Groove Number at every 3 days against Fuse Void Drum Machine's every 3 months. Groove Number also leads on price ($1.99 vs $4.99). On ads, in-app purchases, device support and iOS requirement 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

Fuse Void Drum Machine costs $4.99 and Groove Number $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fuse Void Drum Machine ships an update every 3 months, Groove Number every 3 days. Both last shipped on October 31, 2026.

Scorecard2 real differences · 7 level
Fuse Void Drum Machine versus Groove Number: the parameters behind the verdict, then further details
ParameterFuse Void Drum MachineGroove Number
Price$4.99$1.99 — better
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size23 MB3 MB
Age rating4+4+
DeveloperCEM OZAN DUZENCIJoshua Langberg

In-app purchases

None

Fuse Void Drum Machine

No in-app purchases

None

Groove Number

No in-app purchases

Questions

Is Fuse Void Drum Machine free?
Fuse Void Drum Machine costs $4.99, with no in-app purchases.
Is Groove Number free?
Groove Number costs $1.99, with no in-app purchases.
Do Fuse Void Drum Machine or Groove Number have ads?
Neither Fuse Void Drum Machine nor Groove Number shows ads.
Which is updated more often, Fuse Void Drum Machine or Groove Number?
Fuse Void Drum Machine ships an update every 3 months, and Groove Number every 3 days. Most recently, Fuse Void Drum Machine was updated on October 31, 2026 and Groove Number on October 31, 2026.

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