# 7XDXFM 4OP FM Loop Maker vs PO

The clearest difference is review sentiment: PO at 100% against 7XDXFM 4OP FM Loop Maker's 50%. PO also leads on price (Free vs $1.99) and rating (5.0 vs 4.0). 7XDXFM 4OP FM Loop Maker's advantage is in-app purchases (none vs 3) and ratings volume (6 vs 1). On ads, device support and iOS requirement there is nothing between them.

PO is free to download; 7XDXFM 4OP FM Loop Maker costs $1.99 up front. PO sells 3 one-off in-app purchases. 7XDXFM 4OP FM Loop Maker asks for nothing beyond the download.

PO holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: 7XDXFM 4OP FM Loop Maker has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of 7XDXFM 4OP FM Loop Maker's written reviews are positive against 100% of PO's.

7XDXFM 4OP FM Loop Maker ships an update every 5 days, PO every 2 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 7XDXFM 4OP FM Loop Maker | PO |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.0 (6 ratings)](https://appshunter.io/ios/app/7xdxfm-4op-fm-loop-maker/id1589435250/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/po-patchstudio/id6809190034/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | Paid | **Free** |
| Size | 14 MB | 14 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rob Wilmot](https://appshunter.io/developer/520672432) | [Photon Consulting Limited](https://appshunter.io/developer/6778625337) |

## 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


### PO

[App page](https://appshunter.io/ios/app/po-patchstudio/id6809190034)

Design and edit drum sounds, kits, and patterns for Teenage Engineering's PO-32 Tonic. Transfer your creations to the device via audio. Back up and edit existing sounds, and import/export patches from Microtonic.

**Highlights:** Shape 16 sounds with 21 synth parameters, Program 16-step patterns with accents, Send kits, sounds, or patterns via audio, Back up and decode PO-32 data dumps, Import/export Microtonic patches, Local library with tags and favorites

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip: Thanks | $5.00 | one-time |
| Tip: Big Thanks | $10.00 | one-time |
| Tip: Huge Thanks | $20.00 | one-time |


## Frequently asked questions

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

7XDXFM 4OP FM Loop Maker costs $1.99, with no in-app purchases.

### Is PO free?

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

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

PO is rated higher. 7XDXFM 4OP FM Loop Maker averages 4.0 out of 5 from 6 ratings, while PO averages 5.0 from 1 ratings.

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

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

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

7XDXFM 4OP FM Loop Maker ships an update every 5 days, and PO every 2 days. Most recently, 7XDXFM 4OP FM Loop Maker was updated on October 24, 2026 and PO on October 25, 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.*