# 7XDXFM 4OP FM Loop Maker vs Copperhead

The clearest difference is price: 7XDXFM 4OP FM Loop Maker at $2.99 against Copperhead's $14.99. 7XDXFM 4OP FM Loop Maker also leads on update cadence (every 5 days vs every 3 weeks). Copperhead's advantage is rating (4.7 vs 4.0) and review sentiment (83% vs 50%). On ads, in-app purchases, monetization model and device support there is nothing between them.

7XDXFM 4OP FM Loop Maker costs $2.99 and Copperhead $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Copperhead holds the better App Store score, 4.7 against 4.0. Both are backed by a comparable volume of ratings — 6 and 18 respectively. Written reviews point the same way: 50% of 7XDXFM 4OP FM Loop Maker's written reviews are positive against 83% of Copperhead's.

7XDXFM 4OP FM Loop Maker ships an update every 5 days, Copperhead every 3 weeks. The most recent releases landed on September 4, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | 7XDXFM 4OP FM Loop Maker | Copperhead |
| --- | --- | --- |
| Price | **$2.99** | $14.99 |
| Rating | [4.0 (6 ratings)](https://appshunter.io/ios/app/7xdxfm-4op-fm-loop-maker/id1589435250/reviews) | **[4.7 (18 ratings)](https://appshunter.io/ios/app/copperhead/id6444207037/reviews)** |
| Number of ratings | 6 | **18** |
| Positive reviews | 50.0% of reviews | **83.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Paid | Paid |
| Size | 14 MB | 69 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rob Wilmot](https://appshunter.io/developer/520672432) | [4Pockets.com](https://appshunter.io/developer/370131860) |

## What reviewers say

### 7XDXFM 4OP FM Loop Maker

[App page](https://appshunter.io/ios/app/7xdxfm-4op-fm-loop-maker/id1589435250)

Create complex FM synthesizer sounds and sequences with this 7-track music production tool. Features include LFO modulation, piano roll editing, and built-in effects like echo and reverb. Sync with other apps via Ableton Link or MIDI, and export your creations.

**Highlights:** 4 operator FM synthesizer, 7-track sequencer, LFO modulation, Piano roll editing, Echo and reverb effects, Ableton Link and MIDI sync, Audio export

**Features:** Vision Pro support

**In-app purchases:** none


### Copperhead

[App page](https://appshunter.io/ios/app/copperhead/id6444207037)

This digital synthesizer plugin offers a vintage 80's sound with modern features like multi-note polyphony, an arpeggiator, and integrated audio effects. Design custom waveforms, explore various modulation options, and utilize a powerful sequencer to craft unique sounds.

**Highlights:** AUv3 compatible, Multi-note polyphony, Integrated arpeggiator, Customizable waveforms, Integrated audio effects, 32-step sequencer, Preset Manager

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 7XDXFM 4OP FM Loop Maker free?

7XDXFM 4OP FM Loop Maker costs $2.99, with no in-app purchases.

### Is Copperhead free?

Copperhead costs $14.99, with no in-app purchases.

### Which has better reviews, 7XDXFM 4OP FM Loop Maker or Copperhead?

Copperhead is rated higher. 7XDXFM 4OP FM Loop Maker averages 4.0 out of 5 from 6 ratings, while Copperhead averages 4.7 from 18 ratings.

### Do 7XDXFM 4OP FM Loop Maker or Copperhead have ads?

Neither 7XDXFM 4OP FM Loop Maker nor Copperhead shows ads.

### Which is updated more often, 7XDXFM 4OP FM Loop Maker or Copperhead?

7XDXFM 4OP FM Loop Maker ships an update every 5 days, and Copperhead every 3 weeks. Most recently, 7XDXFM 4OP FM Loop Maker was updated on September 4, 2026 and Copperhead on September 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.*