Currently shipping v1.2.9

Built in the open, with the engineers who use it.

MIXPrep is a one-person build. Real customers, real workflows, real bug reports — that's the roadmap. This page is where it all lives: what shipped this week, what's in the queue, and what's planned next.

Submit a feature request → See what's next
Updated as features ship Most-requested first No vaporware
Submitted
Customers vote and discuss
Open
Planned
Specced, scheduled, in the queue
7
In progress
Actively being built right now
3
Shipped
Live in the latest build — signed and notarized
52
52 Features shipped
7 Feature families
380+ Commits to date
12 Releases since launch
In this release — v1.2.9
Pro polish Just landed
  • Process button hang fix — watchdog plus per-file timeout
  • Tab-to-transient restored with arrow-key gating on AUTO toggle
  • MIXRef Auto-Suggest fires reliably, with "Search more by [mixer]" wired
  • Session Intel filename guardrail — no more hallucinated stem names
  • Session Intel cache — report persists, no regen on re-open
  • BGV tuning severity capped — bleed no longer flagged as a red watch item
  • Help links wired — Interactive Guide, Support, Roadmap all reachable from menu
  • Session Intel labelled Open Beta in the header
Current Roadmap

In the queue right now.

A snapshot of the live build pipeline. Items move from Planned to In Progress to Shipped — usually in that order, sometimes faster.

In progress
— actively being built
3
TomStrip — automated tom cleanup
David's Tom Trick automated — bleed gating and transient preservation on every tom hit. Research complete, build next.
In progress
Bass Gaps — surgical bass silence cleanup
Intelligent gating between bass notes without chewing up sustain. Research complete, follows TomStrip.
In progress
Frequency Traffic Report
Wiring the frequency analyzer into the pipeline so collisions surface in MixBrief and on the per-track HUD.
In progress
Planned
— committed, scheduled, in the queue
7
Custom Reference Library
Drop in your own reference tracks. MIXPrep indexes them and surfaces them alongside the AI suggestions.
Planned
Preview-before-commit
A/B preview every destructive operation (TomStrip, Bass Gaps, declick, declip) before it touches the file.
Planned
AI mentor — mix questions, in-app
A coach trained on MIXPrep workflows and Control Room teaching. Ask it anything about your session.
Planned
MIXRef — search by mixer or producer
Type a name, see every track they touched. Album art thumbnails on every reference card.
Planned
Genre-aware SMART Gain presets
Category-aware gain offsets that adapt to genre — gospel, hip-hop, modern rock, worship.
Planned
AI-powered Clean Names
Context-aware renaming that reads the session, not just the filename.
Planned
PhaseSync — sub-sample phase alignment
Engine exists, 85 tests passing. Polishing the UI for kick in/out, snare top/bottom, and multi-mic guitar.
Planned
Got an idea? Tell us.
Describe the workflow you wish MIXPrep handled. Vote on requests from other engineers. We build the most-requested features first — and you'll get a note when yours ships.
Submit a request →
1

Submit

Describe what you need and why it matters to your workflow. Specifics help us build the right thing.

2

Vote

Upvote requests from other engineers. The most-voted ideas move into the queue first.

3

Ship

We build, you get notified when your request lands in a release. Often within weeks, not quarters.

Development Log

What's already in MIXPrep.

Every feature, fix, and refinement that's gone into MIXPrep since launch. Grouped by feature family.

52 features shipped across 7 families
Pre-Mix Intelligence
10 features
TrackSense — auto-categorization— 37 stem categories identified automatically with single-click manual override and a teachable dictionary that learns your naming conventions.
SMART Gain— Session-Matched Adaptive Ratio Targeting. Category-aware gain staging tuned to professional reference levels.
MixBrief / Session Intel (Open Beta)— AI session report — emotional read, mix priorities, watch items, suggested approach. Filename guardrail prevents hallucinated stems. Caches per-session.
Session Health Ring— At-a-glance session quality score with dual-mono detection, clipping flags, and DC-offset badges.
Tempo, key & time-signature detection— Automatic BPM, musical key, and meter extraction embedded in session metadata.
Mixing Checklist— 26-step personalized pre-mix checklist generated from session analysis.
EBU R128 loudness analysis— Broadcast-standard integrated loudness, danceability, dynamic complexity, and onset rate per track.
Track Translator— 170+ audio terms in 15+ languages with automatic international session detection.
Phase-pair detection— Spots multi-mic'd sources (kick in/out, snare top/bottom) and flags polarity issues before they hit your mix bus.
Audio Quality Scanner— Clipping, DC offset, silence, and low-SNR detection surfaced per track before you hit play.
MIXRef — Reference Engine
10 features
AI reference matching— Genre and energy-matched suggestions resolved against Spotify, iTunes, and MusicBrainz.
Auto-Suggest from session— Reference candidates fire automatically once analysis finishes — no extra clicks. "Search more by [mixer]" wired into every card.
SonicLens A/B— Side-by-side 30-second previews drawn from 80 curated tracks across 10 genres — pick the mix closest to your vision.
Engineer credits panel— Expandable mixer, producer, and mastering credits powered by Discogs and MusicBrainz lookups.
Awards badges— Grammy, Dove, BET, Billboard, and Stellar gold badges surface on relevant cards.
"What to avoid" intake— Multi-select anti-references — overly compressed, too much reverb, harsh highs, muddy mids, and more.
Genre rules & cultural context— Filtering tuned for gospel, hip-hop, modern rock, worship and more — references stay in your lane.
Reference library & favorites— Save references you love, persist between sessions, fast search across the full set.
Chain-of-thought engine— 50+ curated engineers across 10 genres, confidence scoring, smart skip on partial intake.
Search manually & "more by mixer"— Click-throughs from any card jump straight to focused searches by name or by manual query.
MixPrint — Balance Fingerprinting
4 features
Balance scanning from finished mixes— Scan your best mix once. LUFS, spectral profile, crest factor get fingerprinted per category and applied to every new session.
Per-category lock— Lock individual categories so MixPrint preserves your levels while adjusting the rest.
Fuzzy category matching— Match across sessions even when category names drift — "Bass" maps to "BASS DI" maps to "Bass Guitar".
Switch between MixPrint & SMART Gain— Per-track toggle between your saved fingerprint and category-aware SMART Gain.
Direct Inject — DAW Export
5 features
AAF session export— Color-coded tracks with tempo, key, and category markers for Pro Tools, Nuendo, and any AAF-compatible DAW.
Reaper RPP export— Native Reaper session files with full track metadata and color coding.
Pro Tools session reader— Reads raw .ptx/.ptf files and auto-consolidates stems using BWF timestamps. No Pro Tools install required.
D.I. template system— Import your own PTX template, customize category-to-track mapping, set naming patterns.
FirstPass — auto rough mix— Instant rough-mix bounce from raw stems with clip prevention, before you ever open the DAW.
Audio & Playback
6 features
Smart audio output routing— System-default detection plus manual device selector with safe fallback.
Spacebar transport— Space plays/pauses the focused track. Every shortcut documented in the in-app Help modal.
Waveform previews— Inline waveform rendering for every track with transient markers and gain preview.
Tab-to-transient navigation— Real peak-picking with category-specific gap presets (Hat 60ms, Snare 120ms, Kick 160ms, Vocal 180ms, Pads 300ms). Arrow-key auto-play gated on AUTO toggle.
Dual-mono detection & conversion— Auto-detects near-duplicate L/R channels and collapses to true mono with a configurable correlation threshold.
MIDI tempo map export— Type-0 ASCII MIDI with detected BPM and meter, ready for Pro Tools, Logic, or Reaper import.
Workflow & Polish
9 features
Drag-and-drop reordering— Rearrange tracks into your preferred session order. Numbered prefixes preserve that order on export.
NameRecall (Cmd+L)— One-shortcut rollback to original filenames with session-wide suffix-stripping rules.
Clean Names— Session-wide suffix stripping that preserves channel differentiators (_L/_R/In/Out/etc.).
Settings sync— Main window and settings panel stay in lockstep, persist across launches, no orphaned writes.
Organized export folders— Audio / MIDI / Reports subfolders with numbered prefixes preserving session order.
Auto-update check— Version check on launch with update notice surfaced in Settings when a newer build is available.
Process watchdog & per-file timeout— Worker hangs are detected and recovered automatically — the Process button never gets stuck.
Session Intel cache persistence— Reports survive re-opens. No regeneration cost, no surprise API calls.
Help & Roadmap menu wiring— Interactive Guide, Support, and Roadmap surfaces all reachable from the Help menu in-app.
Safety & Trust
8 features
Apple code-signed & notarized— Every release notarized through Apple. Gatekeeper-friendly install on modern macOS.
Crash reporting via Sentry— Every crash auto-reports so we can reproduce and patch without waiting for an email.
Non-destructive file handling— Originals never touched. Processing always writes to a dedicated ordered output folder.
Backup originals on import— Optional one-click backup before processing, off by default for speed but a single toggle away.
Filename hallucination guardrail— Stage 3.5 scrub on Session Intel ensures the AI never invents a stem name that wasn't in your folder.
Severity caps on watch items— BGV bleed and tuning artifacts get appropriately weighted — bleed is no longer flagged red.
Secure proxy for AI calls— License-validated relay to Claude Haiku. No keys in code, no keys on disk, BYOK alternative supported.
In-app bug reporting— Every report David reads himself. The dev queue updates from real customer sessions.

Full release history available in Help → About MIXPrep inside the app.

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