# RUN4 vs Bent Spool

The clearest difference is price: Bent Spool at Free against RUN4's $17.99. RUN4's advantage is chart position (#161 vs unranked). On rating, ratings volume, update cadence and ads there is nothing between them.

Bent Spool is free to download; RUN4 costs $17.99 up front. RUN4 sells 1 one-off in-app purchase and Bent Spool sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for RUN4 against 5.0 for Bent Spool. Both are backed by a comparable volume of ratings — 5 and 5 respectively.

Both ship on a similar rhythm, roughly daily. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | RUN4 | Bent Spool |
| --- | --- | --- |
| Price | $17.99 | **Free** |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/run4-tape-and-texture-machine/id6789147144/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/bent-spool/id6811386417/reviews) |
| Number of ratings | 5 | 5 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Daily | Daily |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#161** | — |
| Size | 199 MB | 23 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eugen Schott](https://appshunter.io/developer/6789147146) | [Plastic Factory LLC](https://appshunter.io/developer/1017920807) |

## What reviewers say

### RUN4

[App page](https://appshunter.io/ios/app/run4-tape-and-texture-machine/id6789147144)

**Currently charting:** #161 Top Paid · Music (US App Store)

Create music with a four-track tape and texture machine. Record, loop, and shape sounds into playable performances using various material modes and sequencing tools. Export mixes or individual stems.

**Highlights:** Four-track tape and texture machine, Three material modes: Tape, Poly, Disc, 64-step sequencer with Euclidean tools, Track shaping with Grain, Tone, Color, Air, AUv3 instrument and effect hosting, MIDI Clock and Ableton Link sync, Export mixes and WAV stems

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TÓLF 12-Track Sequencer | $3.99 | one-time |


### Bent Spool

[App page](https://appshunter.io/ios/app/bent-spool/id6811386417)

This music app offers creative audio effects for live performance or use within other music apps. Explore rhythmic tremolo, pitched repeats, and looping fragments of your audio. It includes built-in overdrive and tape effects for unique sound shaping.

**Highlights:** Rhythmic tremolo effects, Pitched repeat sequences, Overlapping audio loops, Built-in overdrive and fuzz, Vintage tape effects, Standalone and AUv3 host support

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bent Spool Unlock | $9.99 | one-time |


## Frequently asked questions

### Is RUN4 free?

RUN4 costs $17.99, and also offers in-app purchases.

### Is Bent Spool free?

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

### Which has better reviews, RUN4 or Bent Spool?

RUN4 and Bent Spool are both rated 5.0 out of 5 on the App Store, from 5 and 5 ratings respectively.

### Do RUN4 or Bent Spool have ads?

Neither RUN4 nor Bent Spool shows ads.

### Which is updated more often, RUN4 or Bent Spool?

RUN4 ships an update daily, and Bent Spool daily. Most recently, RUN4 was updated on November 5, 2026 and Bent Spool on October 31, 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.*