# Esmuc V1 vs FM 304

The clearest difference is price: FM 304 at $3.99 against Esmuc V1's $9.00. Esmuc V1's advantage is update cadence (every 10 months vs every 43 months) and rating (5.0 vs 4.8). On review sentiment, ratings volume, in-app purchases and monetization model there is nothing between them.

Esmuc V1 costs $9.00 and FM 304 $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Esmuc V1 holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Esmuc V1 ships an update every 10 months, FM 304 every 43 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Esmuc V1 | FM 304 |
| --- | --- | --- |
| Price | $9.00 | **$3.99** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/esmuc-v1/id1383646884/reviews)** | [4.8 (5 ratings)](https://appshunter.io/ios/app/fm-304/id1449167984/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Every 10 months** | Every 43 months |
| Monetization | Paid | Paid |
| Size | 1.1 GB | 17 MB |
| Requires iOS | 12.5.6 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Markus Sigg](https://appshunter.io/developer/458880634) | [Paul Betowski](https://appshunter.io/developer/538476580) |

## What reviewers say

### Esmuc V1

[App page](https://appshunter.io/ios/app/esmuc-v1/id1383646884)

This application provides access to a sample set of the Grenzing organ from the Catalonia College of Music. It allows users to play the instrument using MIDI keyboards and pedals connected to their iOS or macOS devices, with all necessary sound and image files included.

**Highlights:** Grenzing organ sample set, MIDI keyboard and pedal support, iOS and macOS compatibility, Integrated sound and image files, Large download size (1.3 GB)

**In-app purchases:** none


### FM 304

[App page](https://appshunter.io/ios/app/fm-304/id1449167984)

Create music with three powerful FM synthesizers, each featuring integrated sequencers and onboard effects. This app offers intuitive real-time control over all synth parameters for quick sound design and tune creation.

**Highlights:** Three 4-operator FM synths, Integrated sequencers, Onboard delay, reverb, and chorus effects, One knob per function control, 100 save slots, 8 algorithms, Note frequency quantize

**In-app purchases:** none


## Frequently asked questions

### Is Esmuc V1 free?

Esmuc V1 costs $9.00, with no in-app purchases.

### Is FM 304 free?

FM 304 costs $3.99, with no in-app purchases.

### Which has better reviews, Esmuc V1 or FM 304?

Esmuc V1 is rated higher. Esmuc V1 averages 5.0 out of 5 from 2 ratings, while FM 304 averages 4.8 from 5 ratings.

### Which is updated more often, Esmuc V1 or FM 304?

Esmuc V1 ships an update every 10 months, and FM 304 every 43 months. Most recently, Esmuc V1 was updated on November 2, 2026 and FM 304 on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*