Comparison

DC vs EQ

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

Head to head
About

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.

Highlights
  • Circuit-modeled overdrive emulation
  • Authentic analog sound
  • Audio Unit Extension (AUv3) support
  • Expands controls when touched
  • Compatible with popular iOS DAWs
  • Desktop quality algorithm
Read full description

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.

About

EQ

This audio plug-in emulates a classic British equalizer from the 1970s. It offers extensive tonal control with four bands of equalization, high-pass and low-pass filters, and various operational modes. A demo version is available for free, with an unlimited version offered as an in-app purchase.

Highlights
  • Classic British EQ emulation
  • Four bands of equalization
  • High-pass and low-pass filters
  • Stereo, Mid, or Side EQ modes
  • Saturation On/Off
  • Undo/Redo and A/B comparison
  • Standalone and AUv3 plugin
Read full description

EQ-A 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 EQ-A AUv3 plug-in as many times as you want, thereby you get the Demo period again and again.) Unlimited version of EQ-A AUv3 plug-in comes as In-App Purchase. The EQ-A based on Classic British EQ from the '70s. With a surprisingly wide range of tonal variations, the EQ-A is an invaluable and professional audio tool with great flexibility and excellent sonic ability. Features: • Standalone and AUv3 plug-in; • Precise port of Rack Extensions plug-in; • Modeled vintage EQ; • Four bands of classic British equalization (the mid frequency EQ sections are «peaking», while the high and low frequency sections are «shelving»); • Each band offers 4 selected frequency centers; • 15 dB of boost/cut per band; • Three high pass filters at 18 dB per octave and three low pass filters at 12 dB per octave; • Stereo (Mono), Mid or Side EQ modes; • Saturation On/Off-button; • The main of the EQ section allows four frequencies at any one time, switchable to one of four frequencies: Low Filter (Shelf): 50, 80, 100, 150 Hz; Low-Mid Filter (Bell): 250, 500, 1k, 2k Hz; High-Mid Filter (Bell): 3k, 5k, 7k, 9k Hz; High Filter (Shelf): 8k, 10k, 12k, 15k Hz; • Undo/Redo; • A/B comparison; • 2x/4x/8x Upsampling; • Macro controllers; • Built-in Gain Match; • Scalable GUI. A series of three high pass filters at 18 dB per octave and three low pass filters at 12 dB per octave are arranged at the ends of the EQ section. They are unique in that the switches can be pushed in simultaneously, offering distinct cut filter combinations with unusual filter curves. The EQ-A extends the features of the original hardware and joins the flexibility of the digital world to the character of the analog processing. Allows you to choose between equalizer modes (Stereo, Mid, Side) and remove analogue saturation from the processing circuit to deliver pure digital sound.

Screenshots

DC2 screens
EQ4 screens

Verdict

The call

The clearest difference is price: EQ at Free against DC's $2.99. EQ also leads on rating (4.8 vs 4.2) and update cadence (every 2 weeks 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

CostPrice · In-app purchases · Ads · Monetization

EQ is free to download; DC costs $2.99 up front. EQ sells 1 one-off in-app purchase. DC asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

EQ holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 14 and 22 respectively. Written reviews point the same way: 67% of DC's written reviews are positive against 90% of EQ's.

UpkeepUpdate frequency

DC ships an update every 6 months, EQ every 2 weeks. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

Scorecard7 real differences · 3 level
DC versus EQ: the parameters behind the verdict, then further details
ParameterDCEQ
Price$2.99Free — better
Rating4.2 (14 ratings)4.8 (22 ratings) — better
Positive reviews66.7% of reviews90.0% of reviews — better
Number of ratings1422 — better
Update frequencyEvery 6 monthsEvery 2 weeks — 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
Size17 MB22 MB
Age rating4+4+
DeveloperBlamsoft, Inc.RRS, OOO

Customer experience

DC

All ratings14 ratings
Positive78.6%
Neutral0.0%
Negative21.4%
Written reviews12 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

EQ

All ratings22 ratings
Positive95.5%
Neutral0.0%
Negative4.5%
Written reviews10 reviews
Positive90.0%
Neutral0.0%
Negative10.0%

In-app purchases

None

DC

No in-app purchases

1 purchases

EQ

One-time1
  • RRS EQ-A Unlimited$4.99

Questions

Is DC free?
DC costs $2.99, with no in-app purchases.
Is EQ free?
EQ is free to download, with in-app purchases available.
Which has better reviews, DC or EQ?
EQ is rated higher. DC averages 4.2 out of 5 from 14 ratings, while EQ averages 4.8 from 22 ratings.
Do DC or EQ have ads?
Neither DC nor EQ shows ads.
Which is updated more often, DC or EQ?
DC ships an update every 6 months, and EQ every 2 weeks. Most recently, DC was updated on October 9, 2026 and EQ on October 1, 2026.

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