Comparison

Streichfett vs FAC Polyflo

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

Head to head
About

Streichfett

Experience the sound of legendary 70s and 80s string synthesizers on your iPad. This app recreates the classic String Machine experience with a dual sound engine for polyphonic strings and an eight-voice solo section, complete with ensemble, phaser, and reverb effects.

Highlights
  • Dual sound engine (String & Solo sections)
  • Polyphonic String Section
  • Eight-voice Solo Section
  • Ensemble Effect
  • Phaser and Reverb effects
  • Animate Effect for sound morphing
  • AUv3 support
Read full description

The sound engine of the legendary Waldorf Streichfett hardware is now available for iPad including AUv3 format. The Streichfett takes you back to the days of the legendary String Machines. In the old days, there was no choice – to create a massive wall of sound, you simply needed a String Machine. It was the time when composing contemporary music had no resemblance to doing your annual tax return on a PC. It was the golden years of rock and pop, when even keyboard players simply plugged their instrument into the amp and started playing, instead of labouring over endless preset lists in search of the perfect sound. Now there is Streichfett – and the good old days are coming back. Experience what a real String Synthesizer sounds like. Experience how a homogeneous, extremely dense, floating web of sounds can be created from a raw, basic electronic sound in just a few simple steps. Streichfett combines the best of the previously extinct species of String Synthesizers of the 70s and early 80s. Its dual sound engine features a fully polyphonic String Section and an eight voice Solo Section, which is essential for recreating classic movie sounds from the 70s and 80s. The Ensemble Effect provides depth and movement to the String Section, while the Effects Section adds adjustable Phaser and Reverb effects. Additionally, the Animate Effect can be used to modulate the Strings Registration, allowing spectacular sound morphs. The Solo Section offers presets named Bass, E-Piano or Clavi, and just like with a typical String Machine, the sound has little to do with that name. Instead, these are shimmering and slightly percussive sounds that blend well with the String Section. Although the User Interface is simple and easy to comprehend, it controls a rather complex sound engine which is capable of delivering rich and creamy pads unlike any other instrument.

About

FAC Polyflo

This AUv3 plugin allows you to modulate and sequence MIDI instruments and modular hardware. It outputs both MIDI and analog CV simultaneously, supporting hybrid digital and analog setups. Convert various signals into control voltages for deep and flexible modulation.

Highlights
  • AUv3 plugin for modulation and sequencing
  • Outputs MIDI and analog CV simultaneously
  • Converts signals to control voltages
  • Two LFO generators with syncing
  • Integrated envelope follower
  • Six FLO(W) processors for signal shaping
  • Universal Purchase for iOS, macOS, Vision Pro
Features
Read full description

• AUv3 plugin to modulate and sequence MIDI instruments and modular hardware • Outputs MIDI and analog CV simultaneously for integrated hybrid setups • Fully functional in software-only environments with full MIDI support • Converts LFOs, MIDI notes, pitch, and control changes into control voltages • Includes two LFO generators with random spline, cross-modulation and syncing • Integrated envelope follower to track audio input or sidechain signal • Six FLO(W) processors for combining and shaping signals with math and logic • Each FLO supports 18 inputs with individual polarity, divider and multiplier • Multi-out support, built-in waveform viewer, Audio FX, and MIDI FX • Advanced Responsive Design, portrait and landscape views • Universal Purchase: AUv3 for iOS (iPad/iPhone), macOS and Vision Pro FAC Polyflo is an AUv3 plugin for modulating and sequencing MIDI instruments and modular gear via control voltage. It outputs MIDI and analog CV simultaneously, making it well-suited for hybrid setups that combine digital and analog equipment. The plugin includes two LFO generators offering 10 waveforms, including classic shapes and random spline, with support for cross-modulation and syncing. It also features an envelope follower that tracks audio FX input or an external sidechain. The generated signals, together with the host clock and MIDI input, are fed into six independent FLO(W) processors. These processors combine, shape, and route inputs using math operations, conditional logic, and comparators. Each FLO includes individual polarity, division, and multiplication controls, providing deep and flexible modulation that balances chaotic creativity with precise timing. Each FLO processor output is connected to its own output bus, enabling easy integration with hardware via DC-coupled audio interfaces like the Expert Sleepers ES-9. For simpler setups, FLO outputs can be routed to the stereo output. FAC Polyflo can also convert MIDI notes, pitch, and control changes into control voltages, making it a powerful MIDI-to-CV solution. If you prefer to work exclusively with software, the plugin runs smoothly in software-only environments with full MIDI support, making it equally suited for purely digital workflows. FAC Polyflo works as both an Audio Unit FX and MIDI FX, featuring a clean, touch-optimized interface with precise control and waveform visualization. It’s available as an AUv3 for iOS (iPad/iPhone), macOS, and Vision Pro, and requires a compatible AUv3 host app to run. This is an AUv3 Effect and requires a compatible host to work The documentation is available at fredantoncorvest.com/FAC_Polyflo.html

Screenshots

Streichfett1 screens
FAC Polyflo3 screens

Verdict

The call

The clearest difference is in-app purchases: Streichfett at none against FAC Polyflo's 3. FAC Polyflo's advantage is review sentiment (100% vs 70%) and price ($9.99 vs $14.99). On ratings volume, ads, monetization model 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

Streichfett costs $14.99 and FAC Polyflo $9.99 up front. FAC Polyflo sells 3 one-off in-app purchases. Streichfett asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

FAC Polyflo holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 19 and 11 respectively. Written reviews point the same way: 70% of Streichfett's written reviews are positive against 100% of FAC Polyflo's.

Scorecard4 real differences · 6 level
Streichfett versus FAC Polyflo: the parameters behind the verdict, then further details
ParameterStreichfettFAC Polyflo
Price$14.99$9.99 — better
Rating4.6 (19 ratings)4.9 (11 ratings) — better
Positive reviews70.0% of reviews100.0% of reviews — better
Number of ratings19 — better11
Update frequencyEvery 4 months—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.0 — better16.4
Further details — not scored
Size8 MB5 MB
Age rating4+4+
DeveloperWaldorf MusicFrederic Corvest

Customer experience

Streichfett

All ratings19 ratings
Positive89.5%
Neutral0.0%
Negative10.5%
Written reviews10 reviews
Positive70.0%
Neutral0.0%
Negative30.0%

FAC Polyflo

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Streichfett

No in-app purchases

3 purchases

FAC Polyflo

One-time3
  • Small Tip$1.99
  • Medium Tip$4.99
  • Large Tip$14.99

Questions

Is Streichfett free?
Streichfett costs $14.99, with no in-app purchases.
Is FAC Polyflo free?
FAC Polyflo costs $9.99, and also offers in-app purchases.
Which has better reviews, Streichfett or FAC Polyflo?
FAC Polyflo is rated higher. Streichfett averages 4.6 out of 5 from 19 ratings, while FAC Polyflo averages 4.9 from 11 ratings.
Do Streichfett or FAC Polyflo have ads?
Neither Streichfett nor FAC Polyflo shows ads.

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