Comparison

F vs RRS CL1

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

RRS CL1

This audio effect plugin offers dynamic range compression with unique sonic coloration through saturation and dithering. It includes a limiter, equalizer, and advanced features like parallel compression and M/S mode for detailed audio manipulation.

Highlights
  • Dynamic range compression
  • Saturation with even harmonics
  • Dithering for 'air' effect
  • Limiting module for peak control
  • Mid-range equalizer
  • Parallel compression
  • M/S operational mode
Read full description

RRS CL1 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 CL1 AUv3 plug-in as many times as you want, thereby you get the Demo period again and again.) Unlimited version of CL1 AUv3 plug-in comes as In-App Purchase. CL1 is stereo and mono audio signal dynamic range compressor. CL1 compressor has distinctive sound allowing its usage not only for technical purpose of dynamic range compression but also for artistic sound coloration, which happens due to usage of saturation with even harmonics, dithering that gives effect of «air» and oversampling with non-linear phase response that gives effect of «depth». CL1 compressor besides main dynamic range compression module also contains limiting module («limiter»), which allows controlling peaks passing through the compressor, mid-range equalizer module doing ISO-226 curves equalization and input signal or gain reduction VU-meter with lamp indicator for limiter operation control. CL1 compressor has adjustable high-pass filter for side-chain signal, also supports «parallel» compression and M/S operational mode. FEATURES: • Two different attack modes: «fast» and «slow»; • Softness of compressor characteristics control; • 6 operation modes: double mono, mono with external side-chain signal, mid channel, side channel, M/S, linked stereo; • Mid-range equalizer and Side-chain signal high-pass filter; • Pre- or Post-Limiter; • Attack and Release times multiplier; • Internal Dithering; • Parallel compression; • 8x oversampling and 64-bit floating point processing; • External Side-chain. • A/B comparison; • 2x/4x/8x Upsampling; • Macro controllers; • Built-in Gain Match; • Scalable GUI. ATTACK MODE: • In «Fast» mode when control signal reaches Threshold the compressor immediately and very fast starts to lower the signal level slowing down by exponential law; • In «Slow» mode the compressor in the same situation starts gain reduction very slowly thus most attack of the signal passes through. MID SCOOP: • The built-in mid-frequencies equalizer is based on mid-frequency range equal loudness curves design and can be used as another tool to position instruments, with ability to highlight backside elements or to add a bit density to frontal elements and move them back at the same time. CL1 developed on the basis of «МОЛОТ» compressor by Vladislav Goncharov. To use CL1 as a plug-in, you need an AUv3-compatible host app like GarageBand, Auria, AUM, Cubasis and more — CL1 will appear in the list of Audio Unit extensions for effect plug-ins in the host app.

Screenshots

F1 screens
RRS CL14 screens

Verdict

The call

The clearest difference is price: RRS CL1 at Free against F's $2.99. RRS CL1 also leads on update cadence (every 2 months 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 4.5). 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

RRS CL1 is free to download; F costs $2.99 up front. RRS CL1 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 4.5. Both are backed by a comparable volume of ratings — 18 and 28 respectively. Written reviews split almost evenly too, at 78% and 77% positive.

UpkeepUpdate frequency

F ships an update every 8 months, RRS CL1 every 2 months. Both last shipped on October 24, 2026.

Scorecard6 real differences · 4 level
F versus RRS CL1: the parameters behind the verdict, then further details
ParameterFRRS CL1
Price$2.99Free — better
Rating5.0 (18 ratings) — better4.5 (28 ratings)
Positive reviews77.8% of reviews — better76.9% of reviews
Number of ratings1828 — better
Update frequencyEvery 8 monthsEvery 2 months — 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 MB19 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%

RRS CL1

All ratings28 ratings
Positive85.7%
Neutral7.1%
Negative7.1%
Written reviews13 reviews
Positive76.9%
Neutral15.4%
Negative7.7%

In-app purchases

None

F

No in-app purchases

1 purchases

RRS CL1

One-time1
  • RRS CL1 Unlimited$4.99

Questions

Is F free?
F costs $2.99, with no in-app purchases.
Is RRS CL1 free?
RRS CL1 is free to download, with in-app purchases available.
Which has better reviews, F or RRS CL1?
F is rated higher. F averages 5.0 out of 5 from 18 ratings, while RRS CL1 averages 4.5 from 28 ratings.
Do F or RRS CL1 have ads?
Neither F nor RRS CL1 shows ads.
Which is updated more often, F or RRS CL1?
F ships an update every 8 months, and RRS CL1 every 2 months. Most recently, F was updated on October 24, 2026 and RRS CL1 on October 24, 2026.

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