Best Cthulhu Alternatives in 2026
The top Cthulhu alternatives are LANDR Composer, PLAYBOX and Hookpad: 15 AI chord progression generators our editors would look at instead of Cthulhu, in our ranking order.
Cthulhu: A preset-rich MIDI effect for chord shaping and sequenced arpeggios. Where it falls short: no AI features or genre-specific controls.
Switching from Cthulhu? For most ai chord progression generators buyers the best Cthulhu alternative is LANDR Composer, built for dAW users wanting affordable AI songwriting. On a budget, Hookpad starts at $7.99/mo. Hookpad has a free plan, which Cthulhu does not.
Why People Look for a Cthulhu Alternative
- No AI features or genre-specific controls
- No MIDI export function is provided
- Desktop plug-in requires a compatible DAW host
- No free plan — 6 of the alternatives below have it
- No mIDI export — 10 of the alternatives below have it
Quick Picks by What You Need
- Best overallLANDR Composer8.9
DAW users wanting affordable AI songwriting
Visit LANDR Composer - Lowest priceHookpad7.9
Paid plans from $7.99/mo
Visit Hookpad - Best free optionHookpad7.9
Has a free plan (Cthulhu has none)
Visit Hookpad - Best for midi exportLANDR Composer8.9
MIDI export (Cthulhu: no)
Visit LANDR Composer
All 15 Cthulhu Alternatives, Ranked
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
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Best forDAW users wanting affordable AI songwriting
- Better than Cthulhu:
- MIDI export
- Editor score 8.9 vs 5.8
A DAW plugin for shaping chord ideas into editable MIDI arrangements.
- Melody/bass follow-up
- MIDI export
8.9/10★★★★☆Visit LANDR -
Best forEstablished desktop chord-set workflows
- Better than Cthulhu:
- MIDI export
- Editor score 8.2 vs 5.8
A desktop chord-and-sample instrument for established Kontakt workflows, priced at $199 one-time.
- MIDI export
8.2/10★★★★☆Visit PLAYBOX -
Best forSongwriters needing theory-guided AI ideas
- Better than Cthulhu:
- Free plan
- Editor score 7.9 vs 5.8
Theory-guided chord, melody and lyric creation in a browser, with optional AI generation.
7.9/10★★★★☆Visit Hookpad -
Best forAdvanced composers needing deep phrase control
- Better than Cthulhu:
- Editor score 7.8 vs 5.8
A desktop composition tool for shaping chords, melodies and phrases with AI assistance.
7.8/10★★★★☆Visit RapidComposer -
Best forProducers wanting comprehensive harmony tools
- Better than Cthulhu:
- Editor score 7.7 vs 5.8
A deep harmony workstation for producers who want more than chord suggestions.
7.7/10★★★★☆Visit Scaler 3 -
Best forUsers wanting chat-driven multi-track generation
- Better than Cthulhu:
- MIDI export
- Editor score 7.6 vs 5.8
A chat-driven desktop generator for layered MIDI, with a $60 one-time license.
- Melody/bass follow-up
- MIDI export
7.6/10★★★★☆Visit Aether -
Best forProducers needing detailed chord editing
- Better than Cthulhu:
- Editor score 7.5 vs 5.8
A chord-writing plugin with deep voicing controls, MIDI and audio export, and a $99 suite price.
7.5/10★★★★☆Visit Mixed In Key -
Best forAI chord generation with linked MIDI tools
- Better than Cthulhu:
- MIDI export
- Editor score 7.4 vs 5.8
A focused desktop chord generator with editable piano roll and lifetime MIDI workflows.
- Melody/bass follow-up
- MIDI export
7.4/10★★★★☆Visit Unison -
Best forFree desktop users exploring harmonic ideas
- Better than Cthulhu:
- Free plan
- MIDI export
- Editor score 7.3 vs 5.8
A free desktop MIDI generator for shaping and comparing harmonic ideas in a DAW.
- Melody/bass follow-up
- MIDI export
7.3/10★★★★☆Visit ABYZOR Audio -
Best forDesktop songwriters needing broad DAW support
- Better than Cthulhu:
- Editor score 7.2 vs 5.8
Desktop songwriting software for exploring chords, creating parts and exporting MIDI.
7.2/10★★★★☆Visit FeelYourSound -
Best forReal-time riff and melody transformation
- Better than Cthulhu:
- MIDI export
- Editor score 7.1 vs 5.8
A focused MIDI effect for turning chords into editable riffs and melodies across major DAWs.
- Melody/bass follow-up
- MIDI export
7.1/10★★★★☆Visit ChordPotion -
Best forCross-device creators wanting AI chord help
- Better than Cthulhu:
- Free plan
- MIDI export
- Editor score 7.0 vs 5.8
AI chord ideas meet songwriting, recording, MIDI editing, and cross-device sync.
- Melody/bass follow-up
- MIDI export
7.0/10★★★★☆Visit Faso -
Best forFree web harmony mapping and reharmonization
- Better than Cthulhu:
- Free plan
- MIDI export
- Editor score 6.9 vs 5.8
A free browser tool for exploring harmony, arranging scenes, and exporting MIDI.
- Melody/bass follow-up
- MIDI export
6.9/10★★★☆☆Visit Harmony Map -
Best forPrompt-based backing-track experimentation
- Better than Cthulhu:
- Free plan
- MIDI export
- Editor score 6.8 vs 5.8
Prompt-driven backing tracks with detailed practice controls, delivered entirely in a browser.
- Melody/bass follow-up
- MIDI export
6.8/10★★★☆☆Visit Jamprovise -
Best forFree open-source web progression generation
- Better than Cthulhu:
- Free plan
- MIDI export
- Editor score 6.7 vs 5.8
A free, open-source browser tool for AI-assisted progressions and export-ready arranging.
- MIDI export
6.7/10★★★☆☆Visit ChordSeqAI
Cthulhu Alternatives: Common Questions
What is the best alternative to Cthulhu?
LANDR Composer: #1 in our AI Chord Progression Generators ranking, with an editor score of 8.9 out of 10. A DAW plugin for shaping chord ideas into editable MIDI arrangements.
Is there a free alternative to Cthulhu?
Yes. Hookpad, ABYZOR Genesis, Faso, Harmony Map and Jamprovise have a free plan or a free tier (6 of the 15 alternatives on this page).
What is the cheapest paid alternative to Cthulhu?
Of the alternatives here that publish a price, Hookpad starts lowest, at $7.99/mo.
Why do people look for Cthulhu alternatives?
No AI features or genre-specific controls; No MIDI export function is provided; Desktop plug-in requires a compatible DAW host.
How do I switch from Cthulhu?
Export your data from Cthulhu (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel Cthulhu.
How to Switch from Cthulhu
- Export your data from Cthulhu (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel Cthulhu.
Cthulhu vs Each Alternative
| # | Tool | Free plan | Paid from | Key/scale controls | MIDI export | DAW plugin formats | Melody/bass follow-up | Score |
|---|---|---|---|---|---|---|---|---|
| 24 | Cthulhu | No | $39 one-time | None | No | Yes | 5.8 | |
| 1 | LANDR Composer | No | $8.25/mo | Modal | Yes | Vst3_au_aax | Yes | 8.9 |
| 2 | PLAYBOX | No | $199 one-time | Key_and_scale | Yes | None | No | 8.2 |
| 3 | Hookpad | Yes | $7.99/mo | 7.9 | ||||
| 4 | RapidComposer | No | $79 one-time | 7.8 | ||||
| 5 | Scaler 3 | No | 7.7 | |||||
| 6 | Aether | No | $60 one-time | Key_and_scale | Yes | Vst3_au | Yes | 7.6 |
| 7 | Captain Chords | No | $99 one-time | 7.5 | ||||
| 8 | Chord Genie | No | $97 one-time | Key_and_scale | Yes | Vst3_au_aax | Yes | 7.4 |
| 9 | ABYZOR Genesis | Yes | Free | Modal | Yes | Vst3_au | Yes | 7.3 |
| 10 | Sundog Song Studio | No | $69 one-time | 7.2 | ||||
| 11 | ChordPotion | No | $57 one-time | Key_and_scale | Yes | Vst3_au | Yes | 7.1 |
| 12 | Faso | Yes | Key_and_scale | Yes | None | Yes | 7.0 | |
| 13 | Harmony Map | Yes | Free | Modal | Yes | None | Yes | 6.9 |
| 14 | Jamprovise | Yes | Key_only | Yes | None | Yes | 6.8 | |
| 15 | ChordSeqAI | Yes | Free | None | Yes | None | No | 6.7 |
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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