# RackDocs vs Sequentia

The clearest difference is rating: RackDocs at 5.0 against Sequentia's 4.7. RackDocs also leads on update cadence (every 5 days vs every 11 days). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. RackDocs sells 4 in-app purchases, starting at $0.99 per month and Sequentia sells 3 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

RackDocs holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 4 and 10 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

RackDocs ships an update every 5 days, Sequentia every 11 days. The most recent releases landed on September 26, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | RackDocs | Sequentia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/rackdocs-eurorack-reference/id6753894257/reviews)** | [4.7 (10 ratings)](https://appshunter.io/ios/app/sequentia-midi-sequencer/id6781016888/reviews) |
| Number of ratings | 4 | **10** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 11 days |
| Monetization | Freemium | Freemium |
| Size | 29 MB | 22 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TheMM](https://appshunter.io/developer/312265848) | [Yahor Kamarou](https://appshunter.io/developer/1551374720) |

## What reviewers say

### 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 |


### Sequentia

[App page](https://appshunter.io/ios/app/sequentia-midi-sequencer/id6781016888)

This app transforms your iPhone into a powerful MIDI sequencer for hardware synthesizers and drum machines. Generate complex musical patterns, control parameters, and integrate with your DAW. Save and export your creations for further editing.

**Highlights:** Generative MIDI patterns, Hardware synth control, DAW integration, Customizable modules (Drums, Acid, Chords, Arp, LFO), Live pattern editing, MIDI export (.mid)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sequentia Pro Monthly | $7.99 | per month |
| Sequentia Pro Yearly | $39.99 | per year |
| Sequentia Pro Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is RackDocs free?

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

### Is Sequentia free?

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

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

RackDocs is rated higher. RackDocs averages 5.0 out of 5 from 4 ratings, while Sequentia averages 4.7 from 10 ratings.

### Do RackDocs or Sequentia have ads?

Neither RackDocs nor Sequentia shows ads.

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

RackDocs ships an update every 5 days, and Sequentia every 11 days. Most recently, RackDocs was updated on September 26, 2026 and Sequentia on September 29, 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.*