macOS · Linux · Windows

Your story.
Your sound.

Undertow is a desktop app that guides you through your life story and outputs a complete multi-album AI music portfolio. Era by era, memory by memory, song by song — formatted for Suno, Udio, and whatever comes next.

Six steps. One story. Your albums.

1

Define Your Sound

Set your musical identity — genres, BPM, guitar style, vocal delivery, atmosphere. This fingerprint flows into every song.

2

Build Your Timeline

Define your life eras as albums. Each gets its own name, age range, emotional vibe, and musical identity. The sidebar IS your story.

3

Dump Your Memories

Guided prompts cover 10 categories — people, places, secrets, turning points. Tag by emotional weight. The app helps you remember.

4

Extract Songs

Group memories into song concepts. Find the title moment. Assign the emotional core. Map to song structure. Your life, framed as music.

5

Build Blueprints

Full craft layer: structure, metaphors, BPM, key, vocal arc, guitar direction, SFX. Build every song as a complete creative blueprint.

6

Export & Create

Platform-ready prompts for Suno, Udio, or both. Same song, correct format for each. Copy-paste. Generate. Your albums are ready.

Anyone with a story to tell.

Life Transitions

Processing divorce, grief, becoming a parent, empty nest, milestone birthdays. Turn what you've been through into something beautiful.

Memoir Seekers

You've lived a life worth documenting. Guided prompts help you surface memories you forgot you had — and shape them into albums.

AI Music Creators

Tired of one-off random Suno songs? Build cohesive multi-album bodies of work with real emotional arcs. Structure meets creativity.

Everything you need to turn a life into music.

Era Wizard

4-step guided setup: choose album count, name each era, set age ranges, configure musical identity per era. Your timeline, fully yours.

Style Profile

Music + writing fingerprint that flows into every song automatically — genres, instruments, vocal style, production, imagery, POV.

Guided Prompts

10 memory categories per era: key people, events, locations, sensory details, emotions, secrets, turning points, objects, soundtrack, regrets.

Song Blueprints

Full craft layer per song: structure (ABABCB, AABA, etc.), metaphor palette, BPM, key, vocal arc, guitar direction, SFX, reference tracks.

Multi-Platform Output

Same song blueprint — different output shapes. Suno (style field + bracket lyrics + excludes) and Udio (prompt + genre tags + lyrics).

Portfolio Export

Full directory tree: per-album folders, copy-paste-ready .txt files, README with story and listening guide, manifest.json. Ready to create.

Affiliate Footer

Every export includes "Generated with Undertow" footers with referral links. Free tier generates passive revenue on every export.

Auto-Save

Debounced auto-save on every change with backup before overwrite. Your story is safe on disk. No cloud dependency.

Extensible Platform SDK

Add new AI music platforms by writing one adapter file. Same song blueprint → new platform output. Never locked into one vendor.

Your story stays yours.

Undertow

All your data — your eras, your memories, your song blueprints — lives in a single JSON file on your machine. No accounts. No cloud. No servers. Your life story never leaves your hard drive. Export when you want. Create when you're ready.

Other creative tools

Your creative data uploaded to their cloud. Your memories stored on their servers. Your ideas become their training data. You don't know where it goes or who has access. Your life story shouldn't be someone else's product.

Undertow

Desktop app. Local-first. No subscription required.

Open Source — MIT License

Developed by Purfect Labs

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