MF vs Negative Harmony
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MF
This app recreates a classic analog effects pedal, offering a voltage-controlled oscillator with variable waveshape and envelope follower. It allows for processing and modulation of various audio inputs to create unique musical sounds.
- Voltage-controlled oscillator (VCO)
- Variable waveshape
- Hard sync and frequency modulation
- Envelope follower
- Modulate VCO frequency with input dynamics
- Mix VCO with audio input
- AUv3 effects plug-in
Read full descriptionHide full description
The MF-107S Freqbox is a re-invention of Moog Music’s classic Moogerfooger MF-107S analog effects pedal. The MF-107 Freqbox, originally introduced in 2007, contained several complete modular synth functions: a voltage-controlled oscillator (VCO) with variable waveshape capable of being hard synced and frequency modulated by the audio input, and an envelope follower which allowed the dynamics of the input signal to modulate the frequency of the VCO. In addition, the amplitude of the VCO was controlled by the dynamics of the input signal, and the VCO could be mixed with the audio input. A direct descendant of the original Moog modular synthesizers, the MF-107 was adapted to process, modulate, and play with inputs ranging from guitar, voice, and synthesizer to any imaginable audio source. The MF-107 Freqbox has been meticulously recreated as the MF-107S, capturing not only the jagged, freaky sounds of the original, but also the organic way in which the parameters interact to create a musical playing experience. The MF-107S is an AUv3 effects plug-in that requires a compatible host or DAW to function.
Negative Harmony
Read full descriptionHide full description
Negative Harmony lets you explore one of music theory's most fascinating transformations: reflecting any chord or progression across a tonal axis to produce its harmonic mirror image. TAP ANY CHORD Select a root and quality on the interactive Circle of Fifths. See the original chord and its negative simultaneously, with voice-leading automatically applied. BUILD PROGRESSIONS Add chords to a progression and play them back — originals or negatives — with smooth voice leading between every chord. Common tones are held, not re-attacked. UNDERSTAND THE THEORY Built-in theory section explains the concept from first principles: the axis, the transformation formula, voice leading, and the history from Hugo Riemann to Jacob Collier. 5 SOUNDS Choose from Rhodes, Strings, Choir, Organ, or Synth Pad — the same high-quality soundfont used by professional music apps. MULTILINGUAL Full support for English, Spanish, French, German, Italian, and Portuguese.
Screenshots
Verdict
The clearest difference is price: Negative Harmony at $2.99 against MF's $14.99. MF's advantage is iOS requirement (11.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
MF costs $14.99 and Negative Harmony $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | MF | Negative Harmony |
|---|---|---|
| Price | $14.99 | $2.99 — better |
| Rating | 4.4 (7 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 41 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Moog Music Inc. | Martin Adler |
In-app purchases
MF
No in-app purchases
Negative Harmony
No in-app purchases









