Comparison

Zeeon synth vs MF

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Zeeon synth

This app is a virtual analog synthesizer that recreates the sound and feel of classic hardware. It features a detailed circuit-modeling engine, powerful modulation, and multiple filter models for rich, organic soundscapes. Explore a vast array of presets and expand your sonic palette with additional sound banks.

Highlights
  • Circuit-modeling engine
  • Powerful modulation matrix
  • Dual oscillators with variable waveforms
  • Multiple filter models
  • Built-in effects unit
  • Audio Unit v3 support
  • Polyphonic step sequencer
Features
Read full description

Zeeon is a virtual-analog synthesizer built on a deeply detailed circuit-modeling engine. We’ve studied classic and modern analog synths to uncover what gives them their unmistakable character and recreated that essence with precision. The result is a unique instrument that delivers the warmth, movement, and organic depth of true hardware. While many emulations sound flat, Zeeon breathes. Every note is alive, with tight lows and shimmering highs. All audio and modulation are processed at 176 kHz (4× oversampling) for uncompromised quality across the entire spectrum. “Desktop-class sound engine … fidelity of this analog emulation goes beyond everything else on iOS.” – App Store review Features • Audio Unit v3 and standalone application with a simple polyphonic step sequencer • Powerful modulation matrix offering self-modulation and cross-layer modulation, 8 modulation slots, 17 signal sources and 41 targets available, both from modulation modules and audio signal path. This takes Zeeon into semi-modular territory. Imagine oscillator waveform, panning, filter cutoff, resonance or LP-HP mode modulated by oscillators or another layer! • 2 oscillators with continuously variable waveforms, hard-sync and sub-oscillator. Carefully simulated analog drift and PSU influence. • Filter: 3 models available: Transistor ladder low pass, OTA cascade low pass and State Variable Filter with continuously variable LP-HP + BP mode. • 2 low frequency oscillators and envelope generators per voice. • Overdrive: diode clipper, transistor saturation, wave folder, pre and post filter. • Up to 2 layers per voice. Layers can modulate each other. • Effects unit: Circuit modelled BBD chorus, bass booster, zero-delay Phaser, Stereo delay and Reverb. • 280 presets and Tutorials bank. 3 additional banks available as IAPs. Full manual and audio demos available at the BeepStreet website.

About

MF

This app is a digital recreation of a classic analog lowpass filter effect pedal. It allows users to add dynamic motion and warm, vibrant tones to various audio sources like guitars, vocals, and synthesizers.

Highlights
  • Analog 4-pole lowpass filter emulation
  • Envelope follower for dynamic motion
  • Processes guitar, voice, and synths
  • AUv3 effects plugin
  • Warm and vibrant sound quality
Features
Read full description

The MF-101S Lowpass Filter is a re-invention of Moog Music’s classic Moogerfooger MF-101 analog effects pedal. The hardware MF-101 Lowpass Filter, introduced in 1998, contained two complete modular functions: a classic, all-analog 4-pole Lowpass Filter paired with an envelope follower to impart dynamic motion to the filtered sound. Designed by Bob Moog and his engineering team, the MF-101 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-101 Lowpass Filter has been meticulously recreated as the MF-101S, capturing not only the warm and vibrant sound of the original, but also the organic way in which the parameters interact to create a musical playing experience. The MF-101S is an AUv3 effects plug-in that requires a compatible host or DAW to function.

Screenshots

Zeeon synth3 screens
MF3 screens

Verdict

The call

The clearest difference is in-app purchases: MF at none against Zeeon synth's 3. MF also leads on iOS requirement (11.0 vs 15.6). Zeeon synth's advantage is review sentiment (76% vs 50%) and ratings volume (209 vs 9). On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Zeeon synth costs $14.99 and MF $14.99 up front. Zeeon synth sells 3 one-off in-app purchases. MF asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Zeeon synth holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Zeeon synth has 209 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 76% of Zeeon synth's written reviews are positive against 50% of MF's.

UpkeepUpdate frequency

Zeeon synth ships an update every 2 months, MF monthly. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard6 real differences · 4 level
Zeeon synth versus MF: the parameters behind the verdict, then further details
ParameterZeeon synthMF
Price$14.99$14.99
Rating4.8 (209 ratings) — better4.6 (9 ratings)
Positive reviews76.0% of reviews — better50.0% of reviews
Number of ratings209 — better9
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.611.0 — better
Further details — not scored
Size27 MB47 MB
Age rating4+4+
DeveloperBeepStreetMoog Music Inc.

Customer experience

Zeeon synth

All ratings209 ratings
Positive93.8%
Neutral2.4%
Negative3.8%
Written reviews167 reviews
Positive76.0%
Neutral7.2%
Negative16.8%

MF

All ratings8 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Zeeon synth

Reported bugs

4 issues
  • Preset settings not retained after app restart
  • Synth reverts to default settings when reopening Logic Pro project
  • Crashes and freezes on certain iOS 14+ devices
  • Inability to access in-app purchases from within the app

Requested features

5 requests
  • Add MIDI learn functionality
  • Implement a more robust preset management system
  • Include a built-in sequencer with save/load capabilities
  • Improve UI scaling and layout for larger iPad screens
  • Provide better integration with inter-app audio and Audiobus

MF

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Zeeon synth

One-time3
  • OI - Exploration Vol. 1$3.99
  • BB Z-Space$4.99
  • BB Synthwave$4.99
None

MF

No in-app purchases

Questions

Is Zeeon synth free?
Zeeon synth costs $14.99, and also offers in-app purchases.
Is MF free?
MF costs $14.99, with no in-app purchases.
Which has better reviews, Zeeon synth or MF?
Zeeon synth is rated higher. Zeeon synth averages 4.8 out of 5 from 209 ratings, while MF averages 4.6 from 9 ratings.
Do Zeeon synth or MF have ads?
Neither Zeeon synth nor MF shows ads.
Which is updated more often, Zeeon synth or MF?
Zeeon synth ships an update every 2 months, and MF monthly. Most recently, Zeeon synth was updated on October 24, 2026 and MF on October 27, 2026.

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