# AddStation vs OPL AUv3 FM Synth

The clearest difference is update cadence: AddStation at weekly against OPL AUv3 FM Synth's every 3 weeks. AddStation also leads on review sentiment (82% vs 73%) and iOS requirement (12.0 vs 15.0). On price, rating, ratings volume and ads there is nothing between them.

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

AddStation holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 42 and 23 respectively. Written reviews point the same way: 82% of AddStation's written reviews are positive against 73% of OPL AUv3 FM Synth's.

AddStation ships an update weekly, OPL AUv3 FM Synth every 3 weeks. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | AddStation | OPL AUv3 FM Synth |
| --- | --- | --- |
| Price | $9.99 | $9.99 |
| Rating | **[4.5 (42 ratings)](https://appshunter.io/ios/app/addstation/id1500919657/reviews)** | [4.3 (23 ratings)](https://appshunter.io/ios/app/opl-auv3-fm-synth/id1516617949/reviews) |
| Number of ratings | **42** | 23 |
| Positive reviews | **82.1% of reviews** | 72.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Paid | Paid |
| Size | 133 MB | 42 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Harry Gohs](https://appshunter.io/developer/382428644) | [DiscoDSP LLC](https://appshunter.io/developer/1465262828) |

## What reviewers say

### AddStation

[App page](https://appshunter.io/ios/app/addstation/id1500919657)

Explore new sonic territories with this advanced additive synthesis tool. Create complex timbres by combining thousands of sine waves and unique morph sequencing. Integrate seamlessly with iOS production environments and enjoy a suite of built-in effects.

**Highlights:** Fractal additive synthesis, Sound morphing, Over 170 sound presets, AUv3 AudioUnit integration, Built-in effects suite, Audiobus 3 and Ableton Link support

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is AddStation free?

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

### Is OPL AUv3 FM Synth free?

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

### Which has better reviews, AddStation or OPL AUv3 FM Synth?

AddStation is rated higher. AddStation averages 4.5 out of 5 from 42 ratings, while OPL AUv3 FM Synth averages 4.3 from 23 ratings.

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

Neither AddStation nor OPL AUv3 FM Synth shows ads.

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

AddStation ships an update weekly, and OPL AUv3 FM Synth every 3 weeks. Most recently, AddStation was updated on November 11, 2026 and OPL AUv3 FM Synth 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.*