Comparison

DubFilter vs F

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

Head to head
About

DubFilter

This app provides a powerful dual filter with resonance and an exclusive overlap parameter. It also features a redesigned stereo sample player with LFO and scrubbing, along with extensive MIDI and file management capabilities.

Highlights
  • Dual low-pass/high-pass filter
  • Resonance and Overlap parameter
  • Stereo sample player with LFO
  • Scrubbing capabilities
  • Audiobus and Inter-App Audio support
  • MIDI control and file management
  • Preset morphing pad
Features
Read full description

The Dub Filter is a dual low-pass/high-pass 24/48 dB filter, with resonance and the exclusive Overlap parameter! It contains a completely redesigned stereo sample player with LFO and scrubbing capabilities. Main Features: - Audiobus and Inter-App Audio support (sender and FX) - State Variable Filter (Low-Pass and High-Pass) with resonance and overlap - Built In Stereo Sampler with varispeed and scrubbing - Control Manager LFO for all the Parameters - Midibus, Virtual Midi and Network: 14 bit NRPN controllers - File Manager, sharing common audio files via iTunes, Dropbox and AudioCopy - Snapshots Presets Morphing Pad - Post Fx Chain: Low-shelf Filter, High-shelf and Compressor

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.

Screenshots

DubFilter4 screens
F1 screens

Verdict

The call

The clearest difference is price: DubFilter at Free against F's $2.99. DubFilter also leads on ratings volume (71 vs 18). F's advantage is in-app purchases (none vs 1) and rating (5.0 vs 4.7). On review sentiment, 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

DubFilter is free to download; F costs $2.99 up front. DubFilter 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 — 71 and 18 respectively. Written reviews point the same way: 73% of DubFilter's written reviews are positive against 78% of F's.

UpkeepUpdate frequency

DubFilter ships an update every 6 months, F every 8 months. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

Scorecard6 real differences · 4 level
DubFilter versus F: the parameters behind the verdict, then further details
ParameterDubFilterF
PriceFree — better$2.99
Rating4.7 (71 ratings)5.0 (18 ratings) — better
Positive reviews73.3% of reviews77.8% of reviews — better
Number of ratings71 — better18
Update frequencyEvery 6 months — betterEvery 8 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.012.0 — better
Further details — not scored
Size12 MB15 MB
Age rating4+4+
DeveloperAmazing NoisesBlamsoft, Inc.

Customer experience

DubFilter

All ratings71 ratings
Positive91.5%
Neutral2.8%
Negative5.6%
Written reviews30 reviews
Positive73.3%
Neutral6.7%
Negative20.0%

F

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

In-app purchases

1 purchases

DubFilter

One-time1
  • Audio Unit Plugin Support$1.99
None

F

No in-app purchases

Questions

Is DubFilter free?
DubFilter is free to download, with in-app purchases available.
Is F free?
F costs $2.99, with no in-app purchases.
Which has better reviews, DubFilter or F?
F is rated higher. DubFilter averages 4.7 out of 5 from 71 ratings, while F averages 5.0 from 18 ratings.
Do DubFilter or F have ads?
Neither DubFilter nor F shows ads.
Which is updated more often, DubFilter or F?
DubFilter ships an update every 6 months, and F every 8 months. Most recently, DubFilter was updated on October 7, 2026 and F on October 9, 2026.

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