RRS CL1 vs Filterjam
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Filterjam
This app offers a multiband resonant filter for creating unique audio effects. It divides input signals into four bands, allowing for various sonic manipulations from subtle enhancements to extreme sound mangling.
- Multiband resonant filtering
- 4-band signal division
- Sum or multiply band modes
- Versatile sound shaping
- Ringmod-like effects
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Filterjam is a multi-band resonant filter delivering weird ringmod-like filtered sounds. The input signal is divided into 4 bands that are then summed or multiplied together according to the selected mode. Filterjam can be very harsh or gentle, it can add brightness or depth to synth sounds, but it can also completely mangle acoustic sources.
Screenshots
Verdict
The clearest difference is rating: Filterjam at 5.0 against RRS CL1's 4.5. Filterjam also leads on in-app purchases (none vs 1). RRS CL1's advantage is update cadence (every 2 months vs every 22 months) and iOS requirement (10.0 vs 14.0). On price, review sentiment, ratings volume 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
Both are free to download. RRS CL1 sells 1 one-off in-app purchase. Filterjam asks for nothing beyond the download.
Filterjam holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 28 and 34 respectively. Written reviews point the same way: 77% of RRS CL1's written reviews are positive against 83% of Filterjam's.
RRS CL1 ships an update every 2 months, Filterjam every 22 months. The most recent releases landed on October 1, 2026 and October 15, 2026 respectively.
| Parameter | RRS CL1 | Filterjam |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (28 ratings) | 5.0 (34 ratings) — better |
| Positive reviews | 76.9% of reviews | 83.3% of reviews — better |
| Number of ratings | 28 | 34 — better |
| Update frequency | Every 2 months — better | Every 22 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 19 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | RRS, OOO | AudioThing Ltd. |
Customer experience
RRS CL1
Filterjam
In-app purchases
RRS CL1
- RRS CL1 Unlimited$4.99
Filterjam
No in-app purchases







