# OPL AUv3 FM Synth vs NotePulse

The clearest difference is price: NotePulse at $0.99 against OPL AUv3 FM Synth's $9.99. NotePulse also leads on update cadence (every 10 days vs every 3 weeks). OPL AUv3 FM Synth's advantage is iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

OPL AUv3 FM Synth costs $9.99 and NotePulse $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

OPL AUv3 FM Synth ships an update every 3 weeks, NotePulse every 10 days. The most recent releases landed on October 25, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | OPL AUv3 FM Synth | NotePulse |
| --- | --- | --- |
| Price | $9.99 | **$0.99** |
| Rating | **[4.3 (23 ratings)](https://appshunter.io/ios/app/opl-auv3-fm-synth/id1516617949/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Paid | — |
| Size | 42 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DiscoDSP LLC](https://appshunter.io/developer/1465262828) | [Noorcon Inc.](https://appshunter.io/developer/656997884) |

## What reviewers say

### OPL AUv3 FM Synth

[App page](https://appshunter.io/ios/app/opl-auv3-fm-synth/id1516617949)

Emulates the iconic Yamaha OPL2 chip for classic game soundtracks and electronic music. Offers FM and additive synthesis with over 2000 presets and 16x oversampling for clear audio. Requires a MIDI keyboard for standalone use.

**Highlights:** OPL2 chip emulation, FM and additive synthesis, Distinctive percussion mode, 16x oversampling, Over 2000 presets, Standalone MIDI keyboard support

**Features:** macOS Compatibility

**In-app purchases:** none


### NotePulse

[App page](https://appshunter.io/ios/app/notepulse-midi-visualizer/id6810961670)

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

**In-app purchases:** none


## Frequently asked questions

### Is OPL AUv3 FM Synth free?

OPL AUv3 FM Synth costs $9.99, with no in-app purchases.

### Is NotePulse free?

NotePulse costs $0.99, with no in-app purchases.

### Do OPL AUv3 FM Synth or NotePulse have ads?

Neither OPL AUv3 FM Synth nor NotePulse shows ads.

### Which is updated more often, OPL AUv3 FM Synth or NotePulse?

OPL AUv3 FM Synth ships an update every 3 weeks, and NotePulse every 10 days. Most recently, OPL AUv3 FM Synth was updated on October 25, 2026 and NotePulse on October 7, 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.*