F vs Filterstep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Sixteen filter modes
- Frequency and resonance controls
- Analog-style saturation
- Wet/dry mix
- Frequency response display
- Zero Delay Feedback algorithm
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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.
Filterstep
This app offers a creative motion filter plugin for real-time rhythmic movement. Explore intricate patterns and sonic possibilities with various filter effect settings and randomization. Shape any sound into a unique groove.
- Real-time rhythmic movement
- Intricate filter effect settings
- Filter randomization
- Three filter types
- Sequencer movement control
- Infinity mode
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Filterstep is a creative motion filter plugin which provides all kinds of intricate rhythmic movement to any input in real-time. It can give you incredibly complex and nuanced results based on various filter effect settings, and almost infinite possibilities for sonic exploration through filter randomization. You can choose between three filter types, range, frequency, quantization, sequencer movement and more. Craft interesting patterns, or let it run endlessly using the infinity mode. Add filter motion and shape any sound into a groove.
Screenshots
Verdict
The clearest difference is price: Filterstep at Free against F's $2.99. Filterstep also leads on iOS requirement (9.3 vs 12.0). F's advantage is rating (5.0 vs 4.7). On review sentiment, ratings volume, 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
Filterstep is free to download; F costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
F holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 18 and 42 respectively. Written reviews point the same way: 78% of F's written reviews are positive against 73% of Filterstep's.
F ships an update every 8 months, Filterstep every 6 months. Both last shipped on October 1, 2026.
| Parameter | F | Filterstep |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (18 ratings) — better | 4.7 (42 ratings) |
| Positive reviews | 77.8% of reviews — better | 73.3% of reviews |
| Number of ratings | 18 | 42 — better |
| Update frequency | Every 8 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 9.3 — better |
| Further details — not scored | ||
| Size | 15 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Blamsoft, Inc. | AUDIOMODERN |
Customer experience
F
Filterstep
In-app purchases
F
No in-app purchases
Filterstep
No in-app purchases
