F vs RRS EQ173
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
Read full descriptionHide 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.
RRS EQ173
This audio plugin emulates a vintage mic/line amplifier with comprehensive EQ controls. It offers a demo mode with limited playtime and an unlimited version available via in-app purchase. Features include stereo/mid/side EQ, undo/redo, and a scalable GUI.
- Standalone and AUv3 plugin
- Modeled vintage EQ
- Stereo, Mid, or Side EQ modes
- Undo/Redo functionality
- A/B comparison
- Scalable GUI
Read full descriptionHide full description
EQ173 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 EQ173 AUv3 plug-in as many times as you want, thereby you get the Demo period again and again.) Unlimited version of EQ173 AUv3 plug-in comes as In-App Purchase. Red Rock Sound EQ173 is based on introduced in 1970, this hallowed class-A, transistor mic/line amp with EQ epitomizes the beautiful sound, with unparalleled clarity, sheen and bite. Features: • Standalone and AUv3 plug-in; • Modeled vintage EQ; • Stereo (Mono), Mid or Side EQ modes; • Undo/Redo; • A/B comparison; • 2x/4x/8x Upsampling; • Macro controllers; • Built-in Gain Match; • Scalable GUI. PREAMP SECTION: • Line Gain — Line drive is increased as the knob is rotated counter-clockwise. Range: -20 to +10; • Mic Gain — To increase the mic drive, rotate the knob clockwise. Range: -20 to -80. PreAmp will not increase gain, just harmonic distortion. The distortion is mild and adds some coloration. EQ SECTION: • High Band — The High Shelf knob offers approximately ±15 dB of smooth fixed frequency shelving equalization at 12 kHz. Rotate the control clockwise to add the famous high-end sheen, or counter-clockwise to reduce the treble response; • Midrange Band— The midrange band is controlled by two knobs, delivering smooth semi-parametric midrange equalization. The right knob controls the band gain, and the left knob selects the band frequency or band disable. The response for this band has a dependence on the bandwidth as the gain is adjusted. At higher center frequencies, the Q goes up for a more focused peak; • Low Band — The low band delivers smooth low frequency shelving equalization, controlled by two knobs. The right knob controls the band gain, and the left knob selects the shelf frequency or band disable. The available range is approximately ±15 dB. The band gain is zero when the knob position indicator is pointing straight down; • Low Cut — This knob specifies the fixed frequency of the low cut (high pass) filter. This filter has an 18 dB per octave slope. The available frequencies are 50 Hz, 80 Hz, 160 Hz, 300 Hz and OFF. MASTER SECTION: • Input — Input adjusts the signal level at the input of the plug-in without effecting the sonic character of the signal. The available range is ±24 dB; • Phase — The PHASE button inverts the polarity of the signal. When the switch is engaged, the phase is inverted. Leave the switch in the disengaged for normal phase; • EQ — The equalizer is engaged when the EQ switch is engaged. To disable the EQ, disengage the switch. In the EQ173 the audio is still colored even when the EQ switch is disengaged and the EQ settings are in their «flat» positions. This is due to the fact that the signal is still passing through PreAmp circuitry; • Output — Output adjusts the signal level at the output of the plug-in without effecting the sonic character of the signal. The available range is ±24 dB. To use EQ173 as a plug-in, you need an AUv3-compatible host app like GarageBand, Auria, AUM, Cubasis and more — EQ173 will appear in the list of Audio Unit extensions for effect plug-ins in the host app.
Screenshots
Verdict
The clearest difference is price: RRS EQ173 at Free against F's $2.99. RRS EQ173 also leads on update cadence (monthly vs every 8 months) and review sentiment (100% vs 78%). F's advantage is in-app purchases (none vs 1). On rating, 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
RRS EQ173 is free to download; F costs $2.99 up front. RRS EQ173 sells 1 one-off in-app purchase. F asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for F against 4.9 for RRS EQ173. Both are backed by a comparable volume of ratings — 18 and 22 respectively. Written reviews are what separate them: 78% of F's written reviews are positive against 100% of RRS EQ173's.
F ships an update every 8 months, RRS EQ173 monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | F | RRS EQ173 |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (18 ratings) — better | 4.9 (22 ratings) |
| Positive reviews | 77.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 18 | 22 — better |
| Update frequency | Every 8 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Blamsoft, Inc. | RRS, OOO |
Customer experience
F
RRS EQ173
In-app purchases
F
No in-app purchases
RRS EQ173
- RRS EQ173 Unlimited$4.99







