Comparison

Seyfert vs EverSpace

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

Head to head
About

Seyfert

This music effect plugin creates unique echoes that orbit and revolve around the listener. It offers advanced control over pitch, depth, and tone for each echo, with a built-in reverb and EQ for a rich soundscape. It functions as a standalone app or an Audio Unit for music production software.

Highlights
  • Orbital echo generation
  • Spin and Doppler pitch-bend effects
  • 3D binaural imaging
  • Octave shimmer and transpose
  • Per-echo tone and drive
  • Echo-focused reverb and EQ
  • Standalone and AUv3 support
Features
Read full description

Seyfert is a delay unlike your others: every echo spawns at its own place in an orbit around you, and the whole constellation slowly revolves. Turn up Feedback and you don't just add repeats, you spawn more echoes into the orbit, from a single tight slap to a dense, spiralling cloud. Spin revolves the whole field around you. Doppler bends the echoes in pitch as they whirl toward and away. 3D wraps them around your head on headphones. Lift the repeats an octave into crystalline shimmer, drop them a sub-octave for weight, or detune them into a chorus. A lush reverb blooms around the echoes, never the dry signal, so your source stays clear while the repeats dissolve into space. Features: - Orbital echoes, where Feedback sets how many circle you - Spin, from a gentle drift to a full whirl - Doppler pitch-bend as the orbit turns - 3D binaural imaging for headphones - Shimmer and transpose, up or down one octave (octaves, fifths, sub-octaves) - Per-echo Trail tone, tape Wobble, and Drive - Lush reverb applied to the echoes - Full 5-band EQ on the wet signal - Orbit and Ping-Pong patterns, tempo sync - 18 factory presets, plus save your own - Standalone app and Audio Unit (AUv3) for GarageBand, AUM, Logic, and more No accounts, no tracking, no data collected. Everything stays on your device.

About

EverSpace

Create vast sonic environments, evolving ambiances, and complex modulated echoes with this algorithmic reverb. It transforms simple sounds into rich textures and expansive soundscapes, offering creative sound design possibilities beyond traditional room simulation.

Highlights
  • CloudSeed algorithmic reverb engine
  • Early reflection and diffusion network
  • Extensive late-reverb section
  • Deep modulation
  • Multi-tap delay stage
  • Integrated equalization
  • Real-time visualization
Features
Read full description

EverSpace is an algorithmic reverb designed for creating enormous spaces, evolving ambience and richly modulated echoes. Built upon the CloudSeed engine by Ghost Note Audio, its architecture draws inspiration from the algorithmic studio reverbs of the 1980s, where networks of delays and diffusion were used to create spaces that extended far beyond the limits of the physical world. Rather than attempting to recreate a particular room, hall or vintage hardware unit, EverSpace embraces the more creative possibilities of algorithmic reverb. Dense diffusion, multiple delay stages and extensive modulation allow sounds to bloom into vast, constantly moving environments — from spacious reflections and drifting echoes to seemingly endless atmospheric tails. At more extreme settings, EverSpace becomes much more than a conventional reverb. Simple sounds can be transformed into thick evolving pads, shimmering textures and expansive ambient soundscapes, with subtle variations within the reverb network ensuring that the resulting space remains alive and in motion. EverSpace can be used as a traditional send or insert effect, but it is at its best when treated as a creative sound-design tool where the reverb itself becomes part of the sound. Features ○ CloudSeed algorithmic reverb engine — a sophisticated multi-stage architecture inspired by classic algorithmic studio reverbs. ○ Early reflection and diffusion network — control density, delay, modulation and feedback to shape the initial character of the space. ○ Extensive late-reverb section — create everything from diffuse ambience to enormous, slowly evolving reverb tails. ○ Deep modulation — independently shape the movement of diffusion and delay stages for lush, animated spaces. ○ Multi-tap delay stage — adds rhythmic reflections, echoes and additional complexity before the main reverb network. ○ Integrated equalisation — low and high frequency shaping plus filtering to sculpt the colour and decay of the reverb. ○ Seed controls — regenerate the internal delay and diffusion structures to produce different variations from the same settings. ○ Interpolation modes — alter the behaviour and character of the internal delay network. ○ Real-time visualisation — waveform and frequency displays provide visual feedback as sounds enter and evolve through EverSpace.

Screenshots

Seyfert3 screens
EverSpace4 screens

Verdict

The call

The clearest difference is price: Seyfert at $1.99 against EverSpace's $7.99. Seyfert also leads on update cadence (every 2 days vs weekly). On rating, ratings volume, ads and in-app purchases 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

Seyfert costs $1.99 and EverSpace $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Seyfert against 5.0 for EverSpace. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

Seyfert ships an update every 2 days, EverSpace weekly. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 8 level
Seyfert versus EverSpace: the parameters behind the verdict, then further details
ParameterSeyfertEverSpace
Price$1.99 — better$7.99
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings2 — better1
Update frequencyEvery 2 days — betterWeekly
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014 — better
Further details — not scored
Size3 MB18 MB
Age rating4+4+
DeveloperKonstantin Torsten Schutz4Pockets.com

Customer experience

Seyfert

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

EverSpace

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Seyfert

No in-app purchases

None

EverSpace

No in-app purchases

Questions

Is Seyfert free?
Seyfert costs $1.99, with no in-app purchases.
Is EverSpace free?
EverSpace costs $7.99, with no in-app purchases.
Which has better reviews, Seyfert or EverSpace?
Seyfert and EverSpace are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do Seyfert or EverSpace have ads?
Neither Seyfert nor EverSpace shows ads.
Which is updated more often, Seyfert or EverSpace?
Seyfert ships an update every 2 days, and EverSpace weekly. Most recently, Seyfert was updated on October 1, 2026 and EverSpace on October 8, 2026.

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