DC vs PolyIvoks Filter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DC
This audio effect plug-in emulates a classic overdrive guitar pedal using advanced circuit modeling. It provides an authentic analog sound and integrates seamlessly with iOS Digital Audio Workstations.
- Circuit-modeled overdrive emulation
- Authentic analog sound
- Audio Unit Extension (AUv3) support
- Expands controls when touched
- Compatible with popular iOS DAWs
- Desktop quality algorithm
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DC-9 Overdrive is a circuit modeled overdrive plug-in that emulates the famous Ibanez® TS9 Tube Screamer. The DSP algorithms in DC-9 take into account the entire schematic, using the latest modeling techniques. This gives you an authentic analog sound that matches the character of the physical circuit. DC-9 is an Audio Unit Extension (AUv3) that works inside host apps. Just open up your favorite host that supports Audio Units and add it as an effect. The controls expand when touched so they can be easily seen while tweaking. DC-9 brings the distinctive warm overdrive crunch to your favorite iOS DAW. Compatible with GarageBand, Cubasis, Auria, BeatMaker, AudioBus, AUM, Modstep, and more. DC-9 gets its name from the Diode Clipper circuit used to create the distortion. Accurate modeling of the clipper by circuit simulation gives DC-9 an edge over the common distortion plug- in. The effect was carefully tuned using A/B comparisons to the original stop box. Blamsoft brings their experience creating top notch plug-ins for the desktop to iOS. The same algorithm is found in the popular Rack Extension for Propellerhead Reason. You get a desktop quality algorithm at an iOS friendly price. Tap Developer Website for sound examples. Note: Second screenshot shows the effect of touching a control.
PolyIvoks Filter
This audio effect plugin emulates the sound of a legendary 1980s Soviet synthesizer filter. It offers stereo output and a range of modulation and envelope controls for creative sound shaping. A demo version is available with limited free play time.
- Standalone and AUv3 plugin
- Modeled vintage filter
- LFO and envelope modulation
- Stereo output
- Scalable GUI
- Undo/Redo and A/B comparison
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PolyIvoks Filter 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 PolyIvoks Filter AUv3 plug-in as many times as you want, thereby you get the Demo period again and again.) Unlimited version of PolyIvoks Filter AUv3 plug-in comes as In-App Purchase PolyIvoks Filter developed on the basis of the filter of the legendary Soviet synthesizer from 1980s, and only now the legendary Soviet analog sound became available in stereo mode. Features: • Standalone and AUv3 plug-in; • Precise port of Rack Extensions plug-in; • Modeled vintage Filter; • Undo/Redo; • A/B comparison; • 2x/4x/8x Upsampling; • Macro controllers; • Built-in Gain Match; • Scalable GUI. MODULATOR house the LFO controls: MODE — which offers four waveforms, including Noise and a stepped function for Sample & Hold effects, well as SPEED control. FILTER: The four controls adjust CUTOFF, RESONANCE, LPF to BPF switch, MODULATION (LFO) level and ENVELOPE level (You can set positive or negative values). ENVELOPE: repeating ATTACK/DECAY envelope. MASTER: the rightmost unit has 3 regulators ENVELOPE level (You can set positive or negative values), VOLUME (output gain) and DIGITAL/ANALOG switch. To use PolyIvoks Filter as a plug-in, you need an AUv3-compatible host app like GarageBand, Auria, AUM, Cubasis and more — PolyIvoks Filter will appear in the list of Audio Unit extensions for effect plug-ins in the host app.
Screenshots
Verdict
The clearest difference is price: PolyIvoks Filter at Free against DC's $2.99. PolyIvoks Filter also leads on rating (4.7 vs 4.2) and update cadence (fortnightly vs every 6 months). DC's advantage is in-app purchases (none vs 1). On 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
PolyIvoks Filter is free to download; DC costs $2.99 up front. PolyIvoks Filter sells 1 one-off in-app purchase. DC asks for nothing beyond the download.
PolyIvoks Filter holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 14 and 21 respectively. Written reviews point the same way: 64% of DC's written reviews are positive against 86% of PolyIvoks Filter's.
DC ships an update every 6 months, PolyIvoks Filter fortnightly. The most recent releases landed on September 18, 2026 and September 13, 2026 respectively.
| Parameter | DC | PolyIvoks Filter |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.2 (14 ratings) | 4.7 (21 ratings) — better |
| Positive reviews | 63.6% of reviews | 85.7% of reviews — better |
| Number of ratings | 14 | 21 — better |
| Update frequency | Every 6 months | Fortnightly — 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 | 17 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Blamsoft, Inc. | RRS, OOO |
Customer experience
DC
PolyIvoks Filter
In-app purchases
DC
No in-app purchases
PolyIvoks Filter
- RRS PolyIvoks Filter Unlimited$4.99








