# ScalePlay vs BTS FX

The clearest difference is update cadence: BTS FX at every 2 days against ScalePlay's every 3 months. BTS FX also leads on chart position (#166 vs unranked) and device support (3 vs 1). ScalePlay's advantage is ratings volume (10 vs 3). On price, rating, ads and in-app purchases there is nothing between them.

ScalePlay costs $9.99 and BTS FX $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for ScalePlay against 5.0 for BTS FX. Both are backed by a comparable volume of ratings — 10 and 3 respectively.

ScalePlay ships an update every 3 months, BTS FX every 2 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | ScalePlay | BTS FX |
| --- | --- | --- |
| Price | $9.99 | $9.99 |
| Rating | [4.9 (10 ratings)](https://appshunter.io/ios/app/scaleplay/id1140530163/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/bts-fx/id6450247370/reviews)** |
| Number of ratings | **10** | 3 |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#166** |
| Size | 14 MB | 25 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RoGame Software](https://appshunter.io/developer/285831223) | [Dmytro Kiro](https://appshunter.io/developer/1621893756) |

## What reviewers say

### ScalePlay

[App page](https://appshunter.io/ios/app/scaleplay/id1140530163)

This app generates intricate musical patterns and sequences using complex scale theory. It's a powerful tool for both music production and education, offering scale references, virtual instruments, and interactive playback features.

**Highlights:** Generates intricate ostinatos and sequences, Applies complex scale patterns, User-defined songforms and chord changes, Scale references for hundreds of scales, Nine virtual instruments and 128 sounds, Visualizes scale relations, Interactive playback with generated patterns

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

**In-app purchases:** none


### BTS FX

[App page](https://appshunter.io/ios/app/bts-fx/id6450247370)

**Currently charting:** #166 Top Paid · Music (US App Store)

This audio effect plugin offers a versatile multi-effect suite for music production. It features a bitcrusher, distortion, reverb with a freeze function, and a limiter, all controllable within compatible DAWs.

**Highlights:** Bitcrusher with adjustable rate and bit, Distortion module with various algorithms, Reverb module with freeze function, Brick-wall limiter, Oversampling module (2x, 4x, 8x), Stereo/Mode processing, Parameter randomizer

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

**In-app purchases:** none


## Frequently asked questions

### Is ScalePlay free?

ScalePlay costs $9.99, with no in-app purchases.

### Is BTS FX free?

BTS FX costs $9.99, with no in-app purchases.

### Which has better reviews, ScalePlay or BTS FX?

BTS FX is rated higher. ScalePlay averages 4.9 out of 5 from 10 ratings, while BTS FX averages 5.0 from 3 ratings.

### Do ScalePlay or BTS FX have ads?

Neither ScalePlay nor BTS FX shows ads.

### Which is updated more often, ScalePlay or BTS FX?

ScalePlay ships an update every 3 months, and BTS FX every 2 days. Most recently, ScalePlay was updated on November 2, 2026 and BTS FX on November 3, 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.*