# Pads K/01 vs SUS4 Loop Builder

The clearest difference is in-app purchases: Pads K/01 at none against SUS4 Loop Builder's 10. Pads K/01 also leads on update cadence (every 2 days vs every 3 weeks). SUS4 Loop Builder's advantage is device support (3 vs 1) and iOS requirement (16.0 vs 18.6). On price and ads there is nothing between them.

Both are free to download. SUS4 Loop Builder sells 10 in-app purchases, starting at $4.39 per month. Pads K/01 asks for nothing beyond the download.

Pads K/01 ships an update every 2 days, SUS4 Loop Builder every 3 weeks. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Pads K/01 | SUS4 Loop Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pads-k01/id6754179955/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 220 MB | 28 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Serge Kornew](https://appshunter.io/developer/1822336907) | [ThePaulSmith](https://appshunter.io/developer/319584506) |

## What reviewers say

### Pads K/01

[App page](https://appshunter.io/ios/app/pads-k01/id6754179955)

Transform your iPhone into a professional beat-making studio. This app offers customizable pads, advanced effects, and real-time audio playback for creating music on the go. Load your own samples and loops for unlimited creative possibilities.

**Highlights:** 12 customizable pads, Loop & Shuffle modes, Advanced effects (Fade In/Out, Pitch, Speed, Delay), Real-time audio engine, Load custom samples and loops, Pad volume, pan, and effects customization

**Features:** macOS Compatibility

**In-app purchases:** none


### SUS4 Loop Builder

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

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SUS4 All-Access | $4.39 | per month |
| SUS4 All-Access | $5.99 | per month |
| SUS4 All-Access | $7.99 | per month |
| SUS4 All-Access Annual | $19.99 | per year |
| SUS4 All-Access Annual | $26.99 | per year |
| SUS4 All-Access Annual | $35.99 | per year |
| SUS4 All-Access Annual | $51.99 | per year |
| SUS4 Loop Builder Lifetime | $54.99 | one-time |
| SUS4 Loop Builder Lifetime | $71.99 | one-time |
| SUS4 Loop Builder Lifetime | $103.99 | one-time |


## Frequently asked questions

### Is Pads K/01 free?

Pads K/01 is free to download, with no in-app purchases.

### Is SUS4 Loop Builder free?

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

### Do Pads K/01 or SUS4 Loop Builder have ads?

Neither Pads K/01 nor SUS4 Loop Builder shows ads.

### Which is updated more often, Pads K/01 or SUS4 Loop Builder?

Pads K/01 ships an update every 2 days, and SUS4 Loop Builder every 3 weeks. Most recently, Pads K/01 was updated on October 30, 2026 and SUS4 Loop Builder on November 9, 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.*