STREAM by Roxcore vs Seyfert
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STREAM by Roxcore
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The Roxcore Stream App allows you to control music from your iOS devices to all Stream speakers from Roxcore. The App allows you to play the same music in all speakers or different music in all rooms depending on your choice. Easy to install and easy to control. Stay Tuned We will be updating the App regularly to introduce new music service providers and features.
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.
- 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
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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.
Screenshots
Verdict
The clearest difference is price: STREAM by Roxcore at Free against Seyfert's $1.99. STREAM by Roxcore also leads on iOS requirement (6.0 vs 15.0). On update cadence, ads, in-app purchases 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
STREAM by Roxcore is free to download; Seyfert costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
STREAM by Roxcore ships an update every 3 days, Seyfert every 2 days. The most recent releases landed on October 13, 2026 and October 17, 2026 respectively.
| Parameter | STREAM by Roxcore | Seyfert |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 3 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 6.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 46 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Kjell & Company | Konstantin Torsten Schutz |
In-app purchases
STREAM by Roxcore
No in-app purchases
Seyfert
No in-app purchases
