# MF-103S 12-Stage Phaser — Psychedelic Sounds with LFO

> Digital recreation of Moog's classic analog 12-stage phaser effects pedal. (iPhone/iPad app by Moog Music Inc..)

- Source: https://appshunter.io/ios/app/mf-103s-12-stage-phaser/id6450717283 (this page in markdown: same URL + `.md`)
- Developer: [Moog Music Inc.](https://appshunter.io/developer/396776421)
- Category: Music, Entertainment
- Price: $14.99
- Rating: 5.00/5 from 7 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 43 MB
- Released: 2023-08-08
- Data updated: 2026-08-12
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/mf-103s-12-stage-phaser/id6450717283/reviews.md

## What is MF?

The MF-103S 12-Stage Phaser is a re-invention of Moog Music’s classic Moogerfooger MF-103 analog effects pedal.

The MF-103 12-Stage Phaser, introduced in 1999, contained two complete modular functions: a 6-stage/12-stage voltage-controlled Phaser and a voltage-controlled wide-range Low Frequency Oscillator (LFO). Designed by Bob Moog and his engineering team, the MF-103 was a direct descendant of the original Moog modular synthesizers, adapted to process, modulate, and play with inputs ranging from guitar, voice, and synthesizer to any imaginable audio source.

The MF-103 Stage Phaser has been meticulously recreated as the MF-103S, capturing not only the psychedelic enveloping sound of the original, but also the organic way in which the parameters interact to create a musical playing experience.

The MF-103S is an AUv3 effects plug-in that requires a compatible host or DAW to function.

## Key features

- 12-stage voltage-controlled phaser
- Voltage-controlled LFO
- Recreation of classic analog pedal
- Processes various audio sources
- AUv3 effects plugin

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/mf-103s-12-stage-phaser/id6450717283/reviews.md

### 5/5 — Garagebandでも問題なく使える

*2026-03-27*

最初、なぜかGaragebandでAUv3プラグインとして使えなかった（リストには出てくるが選択出来なかった）が、Audiobus3で使えることを確認した後は、Garagebandでも使えるようになっていた。製品の質はバッチリです。

### 5/5 — Dreamy Moog Madness

*2025-04-14*

A dream come true for all the people that never got a chance to buy the originals. 

They really need to bring the analog back but, having these are the next best thing as far as having the dreamy MOOG line. 

In my opinion, it’s essentially turning your guitar into a modular system since it’s made by these mad synth men/people.

## Frequently asked questions about MF

### What is MF-103S 12-Stage Phaser?

MF-103S 12-Stage Phaser is a digital recreation of Moog Music’s classic MF-103 analog effects pedal. It offers a 12-stage voltage-controlled phaser and a voltage-controlled low-frequency oscillator (LFO) for sound modulation.

### What devices does MF-103S 12-Stage Phaser support?

MF-103S 12-Stage Phaser is supported on iPhone, iPad, and iPod. It functions as an AUv3 effects plugin, requiring a compatible host or DAW.

### How much does MF-103S 12-Stage Phaser cost?

MF-103S 12-Stage Phaser is available for a one-time purchase price of $14.99. There are no in-app purchases or subscription fees associated with this application.

### When was MF-103S 12-Stage Phaser last updated?

The latest version of MF-103S 12-Stage Phaser is 1.3.0, which was last updated on June 13, 2024. This indicates ongoing support and potential improvements from the developer.

### What is the age rating for MF-103S 12-Stage Phaser?

MF-103S 12-Stage Phaser has an age rating of 4+. This suggests it is suitable for a wide range of users, including younger individuals, though its primary audience is musicians.

### Does MF-103S 12-Stage Phaser have ads?

No, MF-103S 12-Stage Phaser does not contain advertisements. As a paid application, it provides an uninterrupted user experience without any ad interruptions.

### What kind of sounds can I create with MF-103S 12-Stage Phaser?

You can create psychedelic enveloping sounds and explore organic parameter interactions with MF-103S 12-Stage Phaser. It's designed to process and modulate various audio inputs, offering a wide range of sonic possibilities.

### Is MF-103S 12-Stage Phaser suitable for beginners?

While MF-103S 12-Stage Phaser is a powerful tool, its functionality as an AUv3 plugin requires a compatible host or DAW. Beginners may find it more accessible once they are familiar with music production software.

## Version history (last 5 releases)

### 1.3.0 — 2024-06-13

• Performance improvements to internal DSP.
• Improvements to software licensing.
• Virtual CV slots can now be renamed.
• Added small resize graphic in the bottom right corner to indicates where the resize area is.
• Host automation parameters now look cleaner in DAWs.
• Host automation parameters order is now more logical when viewing as a list.
• LFO phase is now reset when render starts for more consistent render results.
• LFO sync tracking after transport start has been tightened up.
• Fixed MF-105S MURF LFO voltage being output when set to Off.
• Fix for plugin window size not being remembered when closing and re-opening window.
• Fix for flipping switches sometimes causing the UI to slightly shift.

### 1.2.3 — 2024-01-17

Minor improvements.

### 1.2.2 — 2023-12-16

Minor improvements.

### 1.2.1 — 2023-12-08

• Improvements to virtual CV compatibility with Mariana envelopes.

### 1.2.0 — 2023-11-30

• Long press on a MF-105S pattern editor step to set it as the last step for that particular filter band
• Improvements to virtual CV
• Minor performance improvements

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## More apps by Moog Music Inc.

- [Theremini Advanced Software Editor](https://appshunter.io/ios/app/theremini-advanced-software-editor/id929763039)
- [Model 15 Modular Synthesizer](https://appshunter.io/ios/app/model-15-modular-synthesizer/id1041465860)
- [Minimoog Model D Synthesizer](https://appshunter.io/ios/app/minimoog-model-d-synthesizer/id1339418001)
- [Claravox](https://appshunter.io/ios/app/claravox/id1536620093)
- [Animoog Z Synthesizer](https://appshunter.io/ios/app/animoog-z-synthesizer/id1586841361)
- [Mariana Bass Synthesizer](https://appshunter.io/ios/app/mariana-bass-synthesizer/id6449554307)

All apps by Moog Music Inc.: https://appshunter.io/developer/396776421

## Related topics

[phaserings](https://appshunter.io/ios/topics/phaserings) · [phaser](https://appshunter.io/ios/topics/phaser)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-12.*