# DrumKnee 3D Drums vs SUS4 Loop Builder

The clearest difference is ads: SUS4 Loop Builder at none against DrumKnee 3D Drums's shown. DrumKnee 3D Drums's advantage is update cadence (weekly vs monthly) and iOS requirement (13.0 vs 16.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. DrumKnee 3D Drums sells 11 in-app purchases, starting at $4.99 per month and SUS4 Loop Builder sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

DrumKnee 3D Drums ships an update weekly, SUS4 Loop Builder monthly. The most recent releases landed on October 18, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | DrumKnee 3D Drums | SUS4 Loop Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (16K ratings)](https://appshunter.io/ios/app/drumknee-3d-drums-drum-set/id1241682795/reviews)** | — |
| Number of ratings | **16K** | — |
| Positive reviews | 81.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 89 MB | 20 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Music4Fun LLC](https://appshunter.io/developer/1035195351) | [ThePaulSmith](https://appshunter.io/developer/319584506) |

## What reviewers say

### DrumKnee 3D Drums

[App page](https://appshunter.io/ios/app/drumknee-3d-drums-drum-set/id1241682795)

Experience realistic 3D drumming with foot-controlled bass. Record, share, and play along with drumless tracks. Customize your kit with professional sounds and stylish skins for an immersive music experience.

**Highlights:** Realistic 3D drum set, Foot-controlled bass drum, Record and share songs, Play along with drumless tracks, Customizable drum kits, Low latency response, Chokable cymbals

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month DrumKnee Premium | $4.99 | per month |
| 3 Months DK Music | $9.99 | per 3 months |
| 1 Year DrumKnee Premium | $29.99 | per year |
| Pack 1 | $2.99 | one-time |
| Pack 4 | $2.99 | one-time |
| Jazz/Funk Pack | $2.99 | one-time |
| Electro Pack | $2.99 | one-time |
| Pack 2 | $2.99 | one-time |
| Rock Pack | $3.99 | one-time |
| Metal Pack | $3.99 | one-time |
| DrumKnee PRO | $5.99 | one-time |

**What reviewers like**

- 🥁 Realistic and satisfying drum sounds
- 🎨 Variety of customizable drum kits and skins
- 🦵 Innovative knee-triggered kick drum
- 🎶 Ability to play along with songs
- 🤩 Immersive 3D drum experience

**What reviewers complain about**

- 🔊 Cymbal sounds cut off too quickly
- 🤖 Occasional input lag and responsiveness issues
- 💰 Expensive subscription model
- 📢 Frequent and intrusive ads in free version
- 🔌 Battery drain concerns with knee-triggered kick

**Reported bugs**

- Drum kit customization not working as expected
- Subscription issues and inability to restore purchases
- Crashes and freezes when playing for extended periods

**Requested features**

- Ability to customize drum kit layout
- More advanced drum techniques (e.g. double bass, ghost notes)
- Integration with music production software like GarageBand
- Additional drum kit and song library updates
- Rechargeable and wireless DK Sense pedal


### SUS4 Loop Builder

[App page](https://appshunter.io/ios/app/sus4-loop-builder-looper/id6777230284)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SUS4 Loop Builder Pro Monthly | $0.99 | per month |
| SUS4 All-Access | $4.99 | per month |


## Frequently asked questions

### Is DrumKnee 3D Drums free?

DrumKnee 3D Drums is free to download, with in-app purchases available.

### Is SUS4 Loop Builder free?

SUS4 Loop Builder is free to download, with in-app purchases available.

### Do DrumKnee 3D Drums or SUS4 Loop Builder have ads?

DrumKnee 3D Drums shows ads; SUS4 Loop Builder does not.

### Which is updated more often, DrumKnee 3D Drums or SUS4 Loop Builder?

DrumKnee 3D Drums ships an update weekly, and SUS4 Loop Builder monthly. Most recently, DrumKnee 3D Drums was updated on October 18, 2026 and SUS4 Loop Builder 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.*