Comparison

F vs PolyIvoks Filter

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

Head to head
About

F

This audio effect plugin offers sixteen versatile filter modes with precise controls for frequency, resonance, and analog-style saturation. Visualize your frequency response in real-time for intuitive adjustments. It integrates seamlessly with popular AUv3 compatible music production apps.

Highlights
  • Sixteen filter modes
  • Frequency and resonance controls
  • Analog-style saturation
  • Wet/dry mix
  • Frequency response display
  • Zero Delay Feedback algorithm
Read full description

F-16 Filter is a flexible multi-mode filter with frequency response display. It features sixteen modes, frequency and resonance controls, saturation for analog-style soft clipping, and wet/dry mix. The 4 pole lowpass mode provides the frequency response of classic the Moog ladder filter. The other modes provide all of the choices available in the famous Oberheim Matrix 12 and Xpander synthesizers. At the heart of F-16 is a Zero Delay Feedback algorithm, the latest in DSP filtering technology. F-16 Filter gives you a wide variety of filtering options with pristine fidelity. F-16 Filter is an AUv3 that works inside host apps. Just open up your favorite host that supports AUv3 and add it as an effect. Compatible with GarageBand, Cubasis, Auria, BeatMaker, AudioBus, AUM, Modstep, and more. Blamsoft brings their experience creating top notch plug-ins for the desktop to iOS. The same filter modes are found in the popular Rack Extension for Propellerhead Reason. You get a desktop quality plug-in at an iOS friendly price. In addition to controlling the filter through the knobs and sliders, you can use the frequency response display to control cutoff frequency and resonance simultaneously. The sixteen filter modes available are: 1, 2, 3, and 4 Pole Lowpass 1, 2, 3, and 4, Pole Highpass 2 and 4 Pole Bandpass 2 Pole Notch 3 Pole Phase 2 Pole Highpass + 1 Pole Lowpass 3 Pole Highpass + 1 Pole Lowpass 2 Pole Notch + 1 Pole Lowpass 3 Pole Phase + 1 Pole Lowpass Tap Developer Website for sound examples.

About

PolyIvoks Filter

This audio effect plugin emulates the sound of a legendary 1980s Soviet synthesizer filter. It offers stereo output and a range of modulation and envelope controls for creative sound shaping. A demo version is available with limited free play time.

Highlights
  • Standalone and AUv3 plugin
  • Modeled vintage filter
  • LFO and envelope modulation
  • Stereo output
  • Scalable GUI
  • Undo/Redo and A/B comparison
Read full description

PolyIvoks Filter AUv3 plug-in — comes as time-limited Demo-version for you to try. It gives you 5 minutes of Free play time. (You can reload the PolyIvoks Filter AUv3 plug-in as many times as you want, thereby you get the Demo period again and again.) Unlimited version of PolyIvoks Filter AUv3 plug-in comes as In-App Purchase PolyIvoks Filter developed on the basis of the filter of the legendary Soviet synthesizer from 1980s, and only now the legendary Soviet analog sound became available in stereo mode. Features: • Standalone and AUv3 plug-in; • Precise port of Rack Extensions plug-in; • Modeled vintage Filter; • Undo/Redo; • A/B comparison; • 2x/4x/8x Upsampling; • Macro controllers; • Built-in Gain Match; • Scalable GUI. MODULATOR house the LFO controls: MODE — which offers four waveforms, including Noise and a stepped function for Sample & Hold effects, well as SPEED control. FILTER: The four controls adjust CUTOFF, RESONANCE, LPF to BPF switch, MODULATION (LFO) level and ENVELOPE level (You can set positive or negative values). ENVELOPE: repeating ATTACK/DECAY envelope. MASTER: the rightmost unit has 3 regulators ENVELOPE level (You can set positive or negative values), VOLUME (output gain) and DIGITAL/ANALOG switch. To use PolyIvoks Filter as a plug-in, you need an AUv3-compatible host app like GarageBand, Auria, AUM, Cubasis and more — PolyIvoks Filter will appear in the list of Audio Unit extensions for effect plug-ins in the host app.

Screenshots

F1 screens
PolyIvoks Filter4 screens

Verdict

The call

The clearest difference is price: PolyIvoks Filter at Free against F's $2.99. PolyIvoks Filter also leads on update cadence (fortnightly vs every 8 months) and iOS requirement (10.0 vs 12.0). F's advantage is in-app purchases (none vs 1) and rating (5.0 vs 4.7). On review sentiment, ratings volume, 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

PolyIvoks Filter is free to download; F costs $2.99 up front. PolyIvoks Filter sells 1 one-off in-app purchase. F asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

F holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 18 and 21 respectively. Written reviews complicate that: 78% of F's written reviews are positive against 86% of PolyIvoks Filter's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

F ships an update every 8 months, PolyIvoks Filter fortnightly. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

Scorecard6 real differences · 4 level
F versus PolyIvoks Filter: the parameters behind the verdict, then further details
ParameterFPolyIvoks Filter
Price$2.99Free — better
Rating5.0 (18 ratings) — better4.7 (21 ratings)
Positive reviews77.8% of reviews85.7% of reviews — better
Number of ratings1821 — better
Update frequencyEvery 8 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.010.0 — better
Further details — not scored
Size15 MB17 MB
Age rating4+4+
DeveloperBlamsoft, Inc.RRS, OOO

Customer experience

F

All ratings18 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive77.8%
Neutral0.0%
Negative22.2%

PolyIvoks Filter

All ratings21 ratings
Positive90.5%
Neutral0.0%
Negative9.5%
Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

In-app purchases

None

F

No in-app purchases

1 purchases

PolyIvoks Filter

One-time1
  • RRS PolyIvoks Filter Unlimited$4.99

Questions

Is F free?
F costs $2.99, with no in-app purchases.
Is PolyIvoks Filter free?
PolyIvoks Filter is free to download, with in-app purchases available.
Which has better reviews, F or PolyIvoks Filter?
F is rated higher. F averages 5.0 out of 5 from 18 ratings, while PolyIvoks Filter averages 4.7 from 21 ratings.
Do F or PolyIvoks Filter have ads?
Neither F nor PolyIvoks Filter shows ads.
Which is updated more often, F or PolyIvoks Filter?
F ships an update every 8 months, and PolyIvoks Filter fortnightly. Most recently, F was updated on October 9, 2026 and PolyIvoks Filter on October 1, 2026.

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