Two browser-based chord progression generators w/MIDI export, no install

[Real Grooves Audio]

Posting two new tools from Real Grooves Audio:

Grunge Progression Generator — built on the parallel major/natural-minor chord-mixing technique. Covers all 12 keys, major and minor, generates a full Intro/Verse/Chorus/Bridge/Outro structure per run.

British Invasion Chord Generator — a curated diatonic + borrowed-chord pool (flat-seven, minor-four, secondary dominant for major keys; picked-up major IV/V for minor keys) modeled on 1960s British pop harmonic habits. Same 24-key range, 4-part song structure per run.

Both are single self-contained HTML files — no install, no account, no server dependency, runs in any browser. Each has a native MIDI export button that writes a standard .mid file directly in-browser (no external libraries) for dragging into a DAW as a reference — not a performance-quality humanized part, just block triads for mapping out a progression quickly.

$9.99 each on Gumroad. 35% off all purchases with "35OFF" code (ends Monday 11:59 PM). Happy to answer questions about the underlying chord logic if anyone's curious — both are built on genuine (if simplified) music theory rather than a black-box RNG.

Link in signature, and have a great weekend, folks!

[Real Grooves Audio]

Hi folks,

Thought this might be helpful:

Does this work on mobile?
It'll open in a mobile browser, but it's designed and tested for desktop/laptop use.

Does this work on Android and iPhone?
Android opens the file normally, no issues. iPhone is the one exception: Apple's Quick Look preview (what opens when you tap an HTML file in Files or iCloud) doesn't run JavaScript, so the interactive features won't work if you tap the file directly on an iPhone. This is an Apple restriction, not a bug in the tool.

Real Grooves recommends desktop (Mac or Windows) or Android for the best experience.