# Saucillator vs RackDocs

The clearest difference is in-app purchases: Saucillator at none against RackDocs's 4. Saucillator also leads on ratings volume (33 vs 4) and iOS requirement (15.0 vs 18.0). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. RackDocs sells 4 in-app purchases, starting at $0.99 per month. Saucillator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Saucillator against 5.0 for RackDocs. That said, the two scores are not equally well evidenced: Saucillator has 33 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 92% of Saucillator's written reviews are positive against 100% of RackDocs's.

Saucillator ships an update every 8 days, RackDocs every 5 days. The most recent releases landed on September 29, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Saucillator | RackDocs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (33 ratings)](https://appshunter.io/ios/app/saucillator/id6752227604/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/rackdocs-eurorack-reference/id6753894257/reviews)** |
| Number of ratings | **33** | 4 |
| Positive reviews | 92.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 5 days** |
| Monetization | **Free** | Freemium |
| Size | 93 MB | 29 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Green Noise LLC](https://appshunter.io/developer/1838342577) | [TheMM](https://appshunter.io/developer/312265848) |

## What reviewers say

### Saucillator

[App page](https://appshunter.io/ios/app/saucillator/id6752227604)

Create and play custom synthesizers and instruments on your mobile device. Manipulate oscillators and effects with touch, record live loops, and design unique sounds with a variety of timbres and customizable effects. Supports AUv3 for use in other music production apps.

**Highlights:** Custom synthesizer creation, Touchscreen oscillator manipulation, Live looping and recording, AUv3 instrument support, Multi-track looper and beat generator, Parametric EQ and filters, MIDI controller support

**Features:** macOS Compatibility, Vision Pro support

**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 Saucillator free?

Saucillator is free to download, with no in-app purchases.

### Is RackDocs free?

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

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

RackDocs is rated higher. Saucillator averages 4.9 out of 5 from 33 ratings, while RackDocs averages 5.0 from 4 ratings.

### Do Saucillator or RackDocs have ads?

Neither Saucillator nor RackDocs shows ads.

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

Saucillator ships an update every 8 days, and RackDocs every 5 days. Most recently, Saucillator was updated on September 29, 2026 and RackDocs on September 26, 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.*