EQ550b app icon
Apple App StoreObserved metadata

EQ550b

RRS, OOOMusic5.00 · 1 ratings
Open store
Publisher
RRS, OOO
Category
Music
Version
3.0.3
Last updated
Jan 2, 2026
Public page · no login requiredMetadata observed Sep 7, 2026, 10:19 PM

Research answer

What AppTrendKit can say about EQ550b today

EQ550b has no estimate-backed download or gross-consumer-spend figure that meets the public evidence contract yet.

Observed App Store metadata, chart positions, and history are shown below. Missing, non-finite, undefined-currency, or undefined-metric evidence stays missing rather than becoming zero.

Performance intelligence

Observed trajectory and estimates

Store ranks are observations. Downloads and gross store consumer spend are AppTrendKit estimates and only appear when persisted evidence exists.

Estimated downloads · 30D

Modeled

No persisted estimate

The page does not turn missing evidence into zero.

Estimated App Store gross consumer spend · 30D

Modeled

No persisted estimate

The page does not turn missing evidence into zero.

Estimated downloads · 7D

Modeled

No persisted estimate

The page does not turn missing evidence into zero.

Estimated App Store gross consumer spend · 7D

Modeled

No persisted estimate

The page does not turn missing evidence into zero.

Revenue growth · 30D
Download growth · 30D
Grossing rank
Free rank

Evidence history

Collected daily performance

No daily metric history has been persisted yet.

No backfilled days
Daily metrics will appear here after the estimator has persisted more than one observation.

Rank history

Observed chart positions

Lower rank is better. Only collected observations are shown.

No positive rank observations are stored for this storefront yet.

Coverage note

What the ranks mean

A missing rank is not treated as zero downloads or zero revenue. Apple chart feeds are bounded and may return censored or not-ranked observations outside the visible chart depth.

Read the method

Storefront mix

Top countries by estimated contribution

Country estimates are aggregated only after country-level predictions exist.

No country-level economics have been persisted for this app yet.

Monetization

Observed store economics signals

Classification
Free listing
Price
Free
In-app purchases
Not observed
Subscriptions
Not observed

These are listing and product observations. They are not company revenue, subscriber counts, or advertising revenue.

App details

Store metadata

Version
3.0.3
Released
Apr 10, 2020
Last updated
Jan 2, 2026
Content rating
4+
Default storefront
ES

Public IAP observations

Validated in-app purchase prices

Only persisted rows with an explicit public publication boundary are shown. Missing price, currency, country, or date values stay unknown.

Unavailable
No validated public IAP price observations have been persisted for this app yet.

Listing detail

What the store says

EQ550b 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 EQ550b AUv3 plug-in as many times as you want, thereby you get the Demo period again and again.) Unlimited version of EQ550b AUv3 plug-in comes as In-App Purchase. Based on Classic American EQ from the late '60s, the EQ550b is a continuation of the EQ that played a major role in the history of music recording, but with an additional filter band and several new frequencies. With a surprisingly wide range of tonal variations, the EQ550b 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 American equalization; • Each band offers seven selected frequency centers; • 15 dB of boost/cut per band; • EQ band 1 and 4 offer shelf/peak switching; • Proportional Q narrows filter Q at extremes; • Stereo (Mono), Mid or Side EQ modes; • Undo/Redo; • A/B comparison; • 2x/4x/8x Upsampling; • Macro controllers; • Built-in Gain Match; • Scalable GUI. Rather than offer a huge assortment of complex features, the EQ550b provides exactly the right number of controls. Its four EQ bands are overlapped significantly to aid in dual roles as problem solver and sweetening device with each band offering seven switchable filter frequencies that span four-to-five octaves. These frequencies, purposely selected to be musical rather than numeric. Making use of Proportional Q intuitively widens the filter bandwidth at minimal settings and narrows it at higher settings without the need for additional bandwidth controls. This unique feature minimizes the «phase-shift» sound found in many equalizers. The EQ550b 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. To use EQ550b as a plug-in, you need an AUv3-compatible host app like GarageBand, Auria, AUM, Cubasis and more — EQ550b will appear in the list of Audio Unit extensions for effect plug-ins in the host app.

Publisher website

Store creative

Screenshots

EQ550b screenshot 1
Screenshot 1
EQ550b screenshot 2
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EQ550b screenshot 3
Screenshot 3
EQ550b screenshot 4
Screenshot 4
EQ550b screenshot 5
Screenshot 5

Competitive set

Similar apps

Deterministic links to real stored apps matched by category, publisher, and comparable performance bands.

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Methodology and provenance

Read every number with its evidence

Metadata source: Apple iTunes Search API; observed Sep 7, 2026, 10:19 PM.

Rankings: collected chart positions from the listed storefront. Missing ranks are not zeros.

Economics: downloads and gross store consumer spend are estimated, not official Apple or publisher figures.

Model: No persisted model version.

Confidence: ; intervals widen when evidence or history is limited.

Last observation: Sep 7, 2026, 10:19 PM.

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