# ExoSphere vs RackDocs

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.

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.

## The numbers

| Metric | ExoSphere | RackDocs |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | [4.7 (22 ratings)](https://appshunter.io/ios/app/exosphere/id6748644082/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/rackdocs-eurorack-reference/id6753894257/reviews)** |
| Number of ratings | **22** | 4 |
| Positive reviews | 92.9% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | Paid | **Freemium** |
| Size | 257 MB | 31 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Igor Vasiliev](https://appshunter.io/developer/424401626) | [TheMM](https://appshunter.io/developer/312265848) |

## What reviewers say

### ExoSphere

[App page](https://appshunter.io/ios/app/exosphere/id6748644082)

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.

**Highlights:** Five independent sound layers, Customizable sample loading, Built-in sample library, Preset management, Advanced randomizer, Standalone and AUv3 support

**Features:** macOS Compatibility

**In-app purchases:** none


### RackDocs

[App page](https://appshunter.io/ios/app/rackdocs-eurorack-reference/id6753894257)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $3.99 | per year |
| Yearly Supporter | $8.99 | per year |
| Lifetime Access | $44.99 | one-time |


## Frequently asked questions

### Is ExoSphere free?

ExoSphere costs $14.99, with no in-app purchases.

### Is RackDocs free?

RackDocs is free to download, with in-app purchases available.

### Which has better reviews, ExoSphere or RackDocs?

RackDocs is rated higher. ExoSphere averages 4.7 out of 5 from 22 ratings, while RackDocs averages 5.0 from 4 ratings.

### Do ExoSphere or RackDocs have ads?

Neither ExoSphere nor RackDocs shows ads.

### Which is updated more often, ExoSphere or RackDocs?

ExoSphere ships an update every 2 weeks, and RackDocs every 6 days. Most recently, ExoSphere was updated on October 12, 2026 and RackDocs on October 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*