Comparison

MIDI Motif Maker vs SL Knock

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

Head to head
About

MIDI Motif Maker

Generate unique melodies with a single tap using a constraint solver and Markov engine. Shape, remix, and export your musical ideas as MIDI files. This app works offline and offers built-in music theory references.

Highlights
  • One-tap melody generation
  • Remix melodies with 15 scale modes
  • Apply 15 development techniques
  • Export as standard MIDI files
  • AUv3 MIDI plugin support
  • Offline operation
  • Built-in music theory references
Features
Read full description

Stuck for ideas? MIDI Motif Maker generates a finished melody in one tap — then lets you shape, play, and export it as MIDI. No AI, no cloud, no subscription. Built for songwriters, producers, and music students, it turns a blank screen into a usable musical idea in seconds on iPhone, on iPad, and as an AUv3 MIDI plugin right inside your favourite music app. GENERATE • One-tap melody generation — a constraint solver plus a Markov engine • Best-of randomization: auditions multiple candidates and keeps the most musical one • Many built-in motifs to remix across classical, cinematic, jazz, acid-303, rock riffs, ostinatos, and pop themes SHAPE & REMIX • 15 scale modes (major, minor, Dorian, blues, pentatonic and more) with one-tap key transpose • 9 song-form templates (sentence, period, ternary, rondo, bar form, theme & variations…) expanded into labelled sections • 15 development techniques — inversion, retrograde, augmentation, sequence, fragmentation and more • Slice & remix any idea with 6 intelligent strategies LEARN • Built-in music-theory references — chord charts, scale libraries, and interval guides AUv3 PLUGIN — PLAY IT INSIDE YOUR DAW • Run MIDI Motif Maker as an AUv3 MIDI plugin inside AUM, Loopy Pro, Drambo, Logic Pro for iPad, and other AUv3 hosts SEND & EXPORT • Export standard MIDI files (.mid) and share to Files, AirDrop, GarageBand, or any MIDI app • Stream MIDI live over CoreMIDI to hardware synths and to other iOS music apps via a built-in virtual MIDI source • Network MIDI and Bluetooth MIDI supported • Keeps playing and sending while in the background PRIVATE & OFFLINE — MADE BY YOU, NOT BY AI • No generative AI and no machine-learning models — melodies come from music theory and classic algorithms running on your device • Nothing is trained on other artists' music • No internet, no cloud, no account — works fully offline • No tracking, no data collection — your ideas never leave your iPhone • One-time purchase. No subscription. No two ideas the same. iPhone & iPad • iOS 17+

About

SL Knock

Features
Read full description

SL Knock is a focused AUv3 dynamics and tone effect for adding punch, body and controlled low-end weight to drums, samples and loops. • Fast controls for impact and body • Tone shaping for tighter or heavier character • Mix control for parallel processing • Factory presets and local user presets • AUv3 support for compatible iPad music hosts Works as a standalone preview app and as an AUv3 effect in GarageBand, AUM, Cubasis, BeatMaker 3 and other compatible hosts.

Screenshots

MIDI Motif Maker4 screens
SL Knock3 screens

Verdict

The call

The clearest difference is price: MIDI Motif Maker at $5.99 against SL Knock's $6.99. SL Knock's advantage is iOS requirement (15.0 vs 17.0). On update cadence, ads, in-app purchases 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

MIDI Motif Maker costs $5.99 and SL Knock $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

MIDI Motif Maker ships an update every 5 days, SL Knock weekly. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 8 level
MIDI Motif Maker versus SL Knock: the parameters behind the verdict, then further details
ParameterMIDI Motif MakerSL Knock
Price$5.99 — better$6.99
Rating3.7 (3 ratings) — better—
Positive reviews87.5% of reviews—
Number of ratings3 — better—
Update frequencyEvery 5 days — betterWeekly
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size201 MB28 MB
Age rating4+4+
DeveloperAlexandru George TanasaVIACHESLAV ZHILTSOV

In-app purchases

None

MIDI Motif Maker

No in-app purchases

None

SL Knock

No in-app purchases

Questions

Is MIDI Motif Maker free?
MIDI Motif Maker costs $5.99, with no in-app purchases.
Is SL Knock free?
SL Knock costs $6.99, with no in-app purchases.
Do MIDI Motif Maker or SL Knock have ads?
Neither MIDI Motif Maker nor SL Knock shows ads.
Which is updated more often, MIDI Motif Maker or SL Knock?
MIDI Motif Maker ships an update every 5 days, and SL Knock weekly. Most recently, MIDI Motif Maker was updated on October 24, 2026 and SL Knock on October 16, 2026.

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