RackDocs - Eurorack Reference

Name: RackDocs - Eurorack Reference
Rating: 5 (4 reviews)
Author: TheMM

Document Your Modular Synth

Free · In‑App Purchases · Designed for iPad

4 Ratings
Ages

4+
Years
Category

Music
Developer

TheMM
Language

EN
English
Size

29.8
MB

AI-powered annotation extraction: point RackDocs at a module manual and let AI identify all controls, jacks, and LEDs. Review, add, and position — done in minutes. Remember When You Knew What Everything Did? You know the feeling. You're three hours deep into a patch on your Eurorack (or Buchla, or Serge, or 5U rig), riding that creative flow, when you can't remember if that switch toggles the quantizer or unlocks some hidden LFO mode you discovered last month at 2 AM. Or worse, you finally saved up for that complex module everyone raves about. The manual is 87 pages of dense tables. There's a switch upper left. And three knobs. A mysterious LED that blinks in morse code. You patch something, it sounds incredible... then forget how you got there. RackDocs was born from exactly these moments. Built by someone staring at their rack, trying to remember what switch position enables through-zero FM. YOUR RACK, ACTUALLY DOCUMENTED Forget dusty manuals and half-remembered forum posts. Take a photo of your module, mark it up with everything you discover, build your own personal wiki. Every hidden feature. Every switch position. Documentation on your terms. Works with Eurorack, 1U, 5U/MU, Serge, Buchla, and more. BUILT FOR EXPLORATION • NEW: AI annotation extraction—point at a manual or PDF, get all controls identified automatically • Photo-based—faceplates are already the perfect reference • Auto-snap to controls (tap near a jack or knob, circles detected automatically) • Smart image editing (crop that cluttered desk out) • Import specs from ModularGrid (why type HP and mA manually?) • Multi-format support (3U, 1U, 5U, Serge, Buchla—we don't discriminate) • Annotation tools that make sense DOCUMENT EVERYTHING YOU DISCOVER • 12 annotation types for every control (not just "knob goes brr") • Multi-context documentation (Normal Mode vs. Secret Alt Firmware Mode) • LED behavior tracking (solid/blinking/pulsing/existential crisis) • Switch position guides (up = quantized, down = chaos, center = ???) • Multi-step operation notes (tap this while holding that) • Copy/paste annotations COMMUNITY LIBRARY • Many modules documented by fellow patch nerds • Share your discoveries • Vote on documentation (yay or meh) • Verified accounts prevent random chaos SYNC EVERYWHERE, WORK OFFLINE • iCloud sync across iPhone, iPad, and Mac (patching happens everywhere) • Full offline mode (studio has no WiFi anyway) • Your data stays yours (unless you decide different) ORGANIZE THE BEAUTIFUL CHAOS • Search by name, manufacturer, or custom tags • Sort however your brain works • Export cheat sheets as PDFs or images (print them, share them, flex on Instagram) PRICING Start free with 5 modules, 5 community downloads and 5 exports. Try it, see if it fits your workflow. If you like it: • Monthly - No commitment. Cancel anytime. • Yearly - Best value. Less than a patch cable. • Yearly Supporter - Locks your price forever. New features, same rate. For those who hate price increases. Supporter badge! • Lifetime - Pay once, own forever. No subscriptions, no renewals. Support indie development, not investors. Why subscriptions? Servers cost money. Development costs time. This keeps the lights on and lets me build what you need. WHO MADE THIS? A modular enthusiast tired of scribbling notes at 3 AM. Someone who's bought complex modules, discovered secrets over weeks, then forgot everything after a creative break. PERFECT FOR: • Beginners drowning in manuals and tutorials • Live performers needing instant reference (no PDFs on stage) • Collectors managing systems too big to memorize • Gear heads who RTFM and want to share knowledge • Anyone who's thought "this module did something cool last week" Download RackDocs. Document your discoveries. Patch with confidence. Your rack is unique. Your documentation should be too. Screenshots show the app documenting third-party hardware. Module designs © their respective manufacturers. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Ratings & Reviews

5.0

out of 5

4 Ratings

Just what the Doctor ordered
11/25/2025

rwb146
This App has made a huge impact on my Eurorack experience. Very well put together. So easy to use, intuitive, and thorough. Only thing that could make it better is the ability to sort your library by function.I use it to learn modules (what better way than writing down what everything does in an organized fashion). Sure, it’s a little bit of work, but I find it highly rewarding. And there’s an ever growing selection of modules submitted by users who are obviously committed to detail. I also find it essential as reference when my memory fails - which happens more frequently as I acquire more modules and I get older.Highly recommended.

Developer Response
I really appreciate your point about using the app to learn modules by writing everything down in an organized way—that’s exactly the kind of deep engagement I hoped the app would encourage. It is some work, but I’m glad to hear you find it rewarding and helpful, especially as a reference as your system grows.Your suggestion about sorting your library by function is a great one. It’s already on my radar, and feedback like yours helps me prioritize improvements so I can make RackDocs even more useful for you and the rest of the community.
Just what the Doctor ordered
11/25/2025

rwb146

This App has made a huge impact on my Eurorack experience. Very well put together. So easy to use, intuitive, and thorough. Only thing that could make it better is the ability to sort your library by function.I use it to learn modules (what better way than writing down what everything does in an organized fashion). Sure, it’s a little bit of work, but I find it highly rewarding. And there’s an ever growing selection of modules submitted by users who are obviously committed to detail. I also find it essential as reference when my memory fails - which happens more frequently as I acquire more modules and I get older.Highly recommended.
Developer Response Jan 13
I really appreciate your point about using the app to learn modules by writing everything down in an organized way—that’s exactly the kind of deep engagement I hoped the app would encourage. It is some work, but I’m glad to hear you find it rewarding and helpful, especially as a reference as your system grows.Your suggestion about sorting your library by function is a great one. It’s already on my radar, and feedback like yours helps me prioritize improvements so I can make RackDocs even more useful for you and the rest of the community.
Awesome Learning Tool
11/29/2025

MikeB_Modular
A must-have for any modular synth hobbyist or pro. Having a cheat-sheet at your fingertips for your modules is a convenience that is hard to do without now, and sharing my own to the community library has helped me immensely in learning what my modules are capable of.

Developer Response
It means a lot to hear that RackDocs has become such a useful learning tool in your modular journey. I’m especially glad the community library and sharing your own cheat-sheets have helped you get more out of your modules—that’s exactly what I hoped this app could do. I’ll keep working to make it an even better companion for both hobbyists and pros alike.
Awesome Learning Tool
11/29/2025

MikeB_Modular

A must-have for any modular synth hobbyist or pro. Having a cheat-sheet at your fingertips for your modules is a convenience that is hard to do without now, and sharing my own to the community library has helped me immensely in learning what my modules are capable of.
Developer Response Jan 13
It means a lot to hear that RackDocs has become such a useful learning tool in your modular journey. I’m especially glad the community library and sharing your own cheat-sheets have helped you get more out of your modules—that’s exactly what I hoped this app could do. I’ll keep working to make it an even better companion for both hobbyists and pros alike.

AI-Powered Annotation Extraction The biggest time-saver since auto-snap: instead of adding annotations one by one, you can now point RackDocs at a module's manual and let AI do most of the work. - Tap the new sparkles button in edit mode, paste a manual URL or open a PDF, and the AI will identify all knobs, jacks, switches, buttons, LEDs, and other controls - Each annotation comes with its label, a description, and type-specific properties like switch positions, LED colors, and signal functions - Review the results, remove anything you don't need, then add them all at once - Annotations are placed in a grid at the bottom of your faceplate — just tap to review, then long-press and drag each one into position - Works best with detailed manufacturer manuals that describe every control Usage Limits by Tier - Free: 2 extractions - Monthly: 3 per month - Yearly: 5 per month - Yearly Supporter: 10 per month - Lifetime: 150 per year