ExoSphere vs RackDocs
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ExoSphere
Create immersive ambient and meditative soundscapes with five independent sound layers. Load your own samples or use the built-in library to craft unique, evolving atmospheres for relaxation or music production.
- Five independent sound layers
- Customizable sample loading
- Built-in sample library
- Preset management
- Advanced randomizer
- Standalone and AUv3 support
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ExoSphere is a creative tool for shaping continuous ambient and meditative compositions, based on five independent sound layers that merge into a seamless atmosphere. It provides an effortless way to create a foundation for ambient tracks or even a complete background piece with minimal adjustments. Designed with slow rhythmic structures in mind, it is especially suited for meditative music and calm soundscapes. At the heart of ExoSphere are five complementary sound elements, each contributing a distinct dimension to the evolving sonic environment: Core - Deep, evolving drones that anchor the listener with resonant low frequencies, creating a grounding presence in the body. Flow - A layer reminiscent of an instrument, voice, or choir that forms the harmonic foundation of the composition. Gentle shifts its color and pitch, creating a subtle drifting detune that feels fluid and alive. Grain - Layers of stretched environmental fragments - whispers of wind, water, and space - that envelop the listener in a textured, atmospheric sense of place. Shard – Fleeting melodic fragments that surface and dissolve unpredictably, like echoes of imagined songs, sparking shifting associations and evoking transient images. Glow - High, sparkling tones that flicker like light on water, bringing brightness, clarity, and a gentle radiance to the soundscape. Together, these layers interweave into a living, breathing composition that never feels static. The result is a continuously shifting atmosphere - equally suitable as a meditative backdrop, a creative foundation for ambient production, or a complete standalone piece. Each layer in ExoSphere is sample-based, giving the user complete freedom to define the sonic palette. You can load your own samples into any of the five layers, tailoring the sound to your personal style and creating highly individual, versatile compositions. For a quick start, ExoSphere also includes a built‑in library of curated samples, offering ready‑to‑use material that can instantly generate immersive atmospheres. ExoSphere offers an easy start with a minimal interface: choose a factory preset and quickly refresh it by replacing samples, adjusting presence and tone. You can create new variations with the advanced randomizer, while detailed panels provide full control for those who want deeper customization. ExoSphere is a universal application for iOS and macOS. It can work on iPhone and iPad as well as Mac / MacBook with M1 chip (and later). ExoSphere works on iPhone and iPad standalone, as an Audio Unit or Inter-App Audio module, and supports Audiobus and Ableton Link. On MacOS, ExoSphere can works both as a standalone application and as an Audio unit (AUv3) with DAWs and other hosts that support AUv3 plugins. ExoSphere has a built-in detailed description of all parameters also available as PDF file on the application site. Quick start demo: https://youtu.be/1e2Ds24vXQQ You can find more information on ExoSphere and other creative audio apps at: https://motion-soundscape.blogspot.com
RackDocs
Document your modular synthesizer modules with photos and detailed notes. Capture every switch position, LED behavior, and hidden feature. Sync across devices and access your documentation offline.
- Photo-based module documentation
- AI annotation extraction from manuals
- Multi-context documentation
- LED behavior tracking
- Switch position guides
- Community library of documented modules
- Offline access and iCloud sync
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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 CURATED NEWS FEED • Eurorack news, videos, and new module releases - all in one place 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/
Screenshots
Verdict
The clearest difference is price: RackDocs at Free against ExoSphere's $14.99. RackDocs also leads on rating (5.0 vs 4.7) and update cadence (every 6 days vs every 2 weeks). ExoSphere's advantage is in-app purchases (none vs 4) and ratings volume (22 vs 4). On review sentiment, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
RackDocs is free to download; ExoSphere costs $14.99 up front. RackDocs sells 4 in-app purchases, starting at $0.99 per month. ExoSphere asks for nothing beyond the download.
RackDocs holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: ExoSphere has 22 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 93% of ExoSphere's written reviews are positive against 100% of RackDocs's.
ExoSphere ships an update every 2 weeks, RackDocs every 6 days. Both last shipped on October 12, 2026.
| Parameter | ExoSphere | RackDocs |
|---|---|---|
| Price | $14.99 | Free — better |
| Rating | 4.7 (22 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 92.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 22 — better | 4 |
| Update frequency | Every 2 weeks | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 257 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Igor Vasiliev | TheMM |
Customer experience
ExoSphere
RackDocs
In-app purchases
ExoSphere
No in-app purchases
RackDocs
- Monthly Subscription$0.991 Month
- Yearly Subscription$3.991 Year
- Yearly Supporter$8.991 Year
- Lifetime Access$44.99









