Comparison

iProphet Synthesizer vs Model 15 Modular Synthesizer

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

Head to head
About

iProphet Synthesizer

This app emulates the classic Sequential Circuits Prophet VS synthesizer, offering its unique digital sound. Sculpt sounds with four digital oscillators, a multimode filter, and extensive modulation options. It includes over 500 presets and integrates with other music production tools.

Highlights
  • Vector screen with joysticks
  • Modulation Matrix
  • 3 DSP effects
  • 96 waveforms
  • 4 filter types
  • Vector envelope
  • Unison/detune
Read full description

When a punchy, fat sound is demanded, look no further. iProphet recreates the unique sound of the classic Sequential Circuits Prophet VS synthesizer. Need help? Have an issue or question? Please email us at support@retronyms.com. The Prophet VS's rareness and classic digital sound make it a mainstay for those who can find them. The sound is purely classic crisp digital sound that easily stands on its own, but at the same time is the perfect compliment to the sound of analog synthesizers. iProphet brings the crystaline vintage sound of four digital oscillators and allows sculpting them using a creamy and warm multimode filter. iProphet comes with over 500 presets created by some of todays best sound designers. Use it in Tabletop to compose your music. You can morph the sound of the 4 oscillators using the joystick or the vector mode and the vector envelope. You can also swap presets between iProphet and Arturia's Prophet V synthesizer which allows you to work on the iPad and finish in the DAW of your choice. iProphet is a Tabletop Ready app. The connect menu allows you to connect iProphet to the Retronyms Tabletop app, giving you an integration with a complete studio environment. Tabletop also features add-ons for more effects and instruments from other 3rd party companies. iProphet supports Core MIDI, interapp-audio as well as Audiobus technologies for perfect integration. The use of the brands 'Prophet' and 'Sequencial Circuits' is done with permission of Dave Smith Instruments. Features Include: - Vector screen with joysticks to mix oscillators and envelopes - Super flexible Modulation Matrix - 3 DSP effects (overdrive, delay, and chorus) - 96 different wave forms to control pitch - 4 filter types - Vector envelope featuring loop points - Unison/detune for beefy sounds - Full user MIDI mapping of panel controls - Tabletop Ready app - Soundcloud seeder (via Tabletop) - Render to .wav file (via Tabletop) - AudioCopy to paste your audio into another iPad application (via Tabletop)

About

Model 15 Modular Synthesizer

This app recreates a legendary modular synthesizer for mobile devices. Explore its iconic modules, experiment with sound design, and create music with intuitive controls and advanced features.

Highlights
  • Iconic Moog module recreation
  • Monophonic and 4-voice polyphonic operation
  • Integrated Moog keyboard and ribbon controller
  • Sequencing arpeggiator
  • MIDI integration and external control
  • Looping recorder with overdubbing
  • AUv3 Audio Unit Extensions support
Features
Currently charting
Read full description

The Moog Model 15 App is the first Moog modular synthesizer and synthesis educational tool created exclusively for iPad, iPhone and iPod touch. Each facet of the Moog Model 15 modular synthesizer has been meticulously recreated in this application to ensure the power and transcendent sound quality of each module remains intact. The character, harmonic complexity and mystique of the Moog Model 15’s modules, from the legendary Moog 921–series oscillators and 904A Low Pass Filter, to the coveted 907 Fixed Filter Bank have been painstakingly preserved. In order to develop the most immersive and expressive modular interface possible, the Model 15 App has been designed utilizing Apple’s new Metal advanced graphics engine. This ensures that all zooming, panning and modular patching throughout the application feels completely natural, something that would have been impossible otherwise. The Model 15 App features both monophonic and 4-voice polyphonic operation is easily commanded via 4 seamlessly integrated controllers. Simple swipes and taps provide instant access to a traditional Moog keyboard, 1150 ribbon controller, 8-step sequencing arpeggiator and the award-winning Animoog keyboard with 22 built-in scales and polyphonic modulation capabilities. Also included are extended features which expand the capabilities of the app beyond the traditional offerings of the hardware Moog Model 15. These include total MIDI integration, assignment for external control, use as a MIDI controller, dedicated Audio Bridge and MIDI Bridge modules, looping recorder module with overdubbing, a master ping-pong delay module and a new extension cabinet that includes additional amplifiers and voltage-controlled reversible attenuators that can be used for effects like ring-modulation. Because the Model 15 App utilizes Apple’s Metal technology, only 64-bit devices are supported. Compatible devices include iPhone 5s or newer, iPod touch 6 or newer, iPad Air or newer, and the iPad Pro. The Model 15 App requires iOS version 12.4 or later to work. Additional Features • Ships with over 160 unique presets • Recreates the sound of a hardware Moog Model 15 modular synthesizer • Easily share presets and recordings with anyone • Tutorial patches to assist all experience levels • Intuitive patching and cable coloring • Support for landscape and portrait modes • Voltage-controlled stereo ping-pong delay • Expressive sequencing arpeggiator • Moog 1150 Ribbon controller • Real-time looping recorder with overdub and immediate sharing • Up to two controllers on-screen (iPad only) • Optional left-handed UI operation Supports • AUv3 Audio Unit Extensions • 3D Touch and Apple Pencil integration for after pressure • Note-per-channel MIDI controllers • Ableton Link • Inter-App Audio and Audiobus • MIDI Bridge and Audio Bridge • 7 and 14-Bit MIDI • MIDI Program Change • Bluetooth LE MIDI controllers • Typing keyboards for shortcuts and musical typing • AudioCopy, AudioPaste and AudioShare

Screenshots

Model 15 Modular Synthesizer4 screens

Verdict

The call

The clearest difference is review sentiment: Model 15 Modular Synthesizer at 86% against iProphet Synthesizer's 34%. Model 15 Modular Synthesizer also leads on rating (4.9 vs 3.5) and ratings volume (898 vs 32). iProphet Synthesizer's advantage is price ($9.99 vs $29.99) and in-app purchases (none vs 10). On update cadence and ads 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

iProphet Synthesizer costs $9.99 and Model 15 Modular Synthesizer $29.99 up front. Model 15 Modular Synthesizer sells 10 one-off in-app purchases. iProphet Synthesizer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Model 15 Modular Synthesizer holds the better App Store score, 4.9 against 3.5. That said, the two scores are not equally well evidenced: Model 15 Modular Synthesizer has 898 ratings behind it against 32, so its average is the more settled of the two. Written reviews point the same way: 34% of iProphet Synthesizer's written reviews are positive against 86% of Model 15 Modular Synthesizer's.

UpkeepUpdate frequency

iProphet Synthesizer ships an update every 5 months, Model 15 Modular Synthesizer every 3 months. The most recent releases landed on November 6, 2026 and November 11, 2026 respectively.

Scorecard9 real differences · 2 level
iProphet Synthesizer versus Model 15 Modular Synthesizer: the parameters behind the verdict, then further details
ParameteriProphet SynthesizerModel 15 Modular Synthesizer
Price$9.99 — better$29.99
Rating3.5 (32 ratings)4.9 (898 ratings) — better
Positive reviews34.0% of reviews86.5% of reviews — better
Number of ratings32898 — better
Update frequencyEvery 5 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank—#77 — better
DevicesiPadiPhone, iPad, iPod, Mac — better
Requires iOS8.0 — better12.4
Further details — not scored
Size85 MB857 MB
Age rating4+4+
DeveloperArturiaMoog Music Inc.

Customer experience

iProphet Synthesizer

All ratings30 ratings
Positive63.3%
Neutral3.3%
Negative33.3%
Written reviews100 reviews
Positive34.0%
Neutral17.0%
Negative49.0%

Model 15 Modular Synthesizer

All ratings896 ratings
Positive96.8%
Neutral1.7%
Negative1.6%
Written reviews480 reviews
Positive86.5%
Neutral4.0%
Negative9.6%

User reviews

iProphet Synthesizer

From 32 App Store ratings

What we love

  • 🎵 Authentic Prophet VS sound quality and character
  • 🎹 Deep modulation matrix with vector synthesis capabilities
  • 🎚️ Extensive preset library with diverse sounds
  • 🎨 Intuitive visual interface and design
  • 💰 Affordable price point for feature set

Room to improve

  • 🐛 Persistent audio distortion and crackling issues
  • 🐛 Frequent crashes and app freezes
  • 🔌 Poor inter-app audio (IAA) and Audiobus integration
  • 🔋 Excessive battery drain in background
  • ⚠️ Abandoned by developer with no updates

Model 15 Modular Synthesizer

From 898 App Store ratings

What we love

  • 🚀 Incredible sound quality
  • 👍 Authentic Moog emulation
  • 💡 Great for learning modular synthesis
  • 🎨 Beautiful and detailed interface
  • 🎹 Expressive MIDI capabilities

Room to improve

  • 🐛 Occasional crashes and glitches
  • 🔍 Difficult to navigate on smaller screens
  • 🕹️ Challenging to patch and tweak
  • 🔋 High CPU usage

Bugs and requests

iProphet Synthesizer

Reported bugs

15 issues
  • Audio distortion and crackling in all presets
  • App crashes on iOS 14+ versions
  • Inter-app audio (IAA) connection requires multiple restarts
  • Preset changes cause app freezes and audio cutouts
  • Stuck and hanging notes when sliding on keyboard
Show 10 more
  • Modulation settings incorrectly apply across different presets
  • Low-frequency humming loop persists during playback
  • AirPods Max audio quality degradation
  • Audiobus integration causes lockout and screeching
  • iPad goes to sleep during drone playback
  • Save preset function not working
  • Waveform display shows white blocks in Tabletop
  • Sustain pedal not responding to MIDI messages
  • Preset polyphony status changes unexpectedly
  • App becomes unresponsive in DAW environments

Requested features

14 requests
  • AUv3 plugin support for Logic Pro and other DAWs
  • Ability to save custom patches and presets
  • Velocity and aftertouch MIDI support
  • MIDI control for joystick parameter
  • User-defined waveform creation
Show 9 more
  • Full 8-note polyphony support
  • Background audio playback capability
  • MIDI output functionality
  • Master transpose feature
  • Key and velocity zones
  • Sequencer built into app
  • Sample rate adjustment options
  • Persistent MIDI channel settings
  • Last preset memory on app launch

Model 15 Modular Synthesizer

Reported bugs

3 issues
  • Arpeggiator direction not working as expected
  • Distortion and audio issues on latest iOS versions
  • Incompatibility with certain DAWs

Requested features

5 requests
  • More in-depth tutorials
  • Ability to customize module layout
  • Zoom/overview option for entire system
  • Expanded preset library
  • Midi mapping for arpeggiator

In-app purchases

None

iProphet Synthesizer

No in-app purchases

10 purchases

Model 15 Modular Synthesizer

One-time10
  • Symbiotic EquationsFree
  • Synthesist ToolkitFree
  • Sonic Mayhem$2.99
Show 7 more
  • Sinfonietta Sintesi$2.99
  • Psychotropic Synthesis$2.99
  • Alien Systems$3.99
  • Textural Points$4.99
  • Mid-Century Moog$4.99
  • Dynamic Drones$4.99
  • Mercurial Strategies$5.99

Questions

Is iProphet Synthesizer free?
iProphet Synthesizer costs $9.99, with no in-app purchases.
Is Model 15 Modular Synthesizer free?
Model 15 Modular Synthesizer costs $29.99, and also offers in-app purchases.
Which has better reviews, iProphet Synthesizer or Model 15 Modular Synthesizer?
Model 15 Modular Synthesizer is rated higher. iProphet Synthesizer averages 3.5 out of 5 from 32 ratings, while Model 15 Modular Synthesizer averages 4.9 from 898 ratings.
Do iProphet Synthesizer or Model 15 Modular Synthesizer have ads?
Neither iProphet Synthesizer nor Model 15 Modular Synthesizer shows ads.
Which is updated more often, iProphet Synthesizer or Model 15 Modular Synthesizer?
iProphet Synthesizer ships an update every 5 months, and Model 15 Modular Synthesizer every 3 months. Most recently, iProphet Synthesizer was updated on November 6, 2026 and Model 15 Modular Synthesizer on November 11, 2026.

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