SyndtSphere vs Stellarvox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SyndtSphere
Explore a novel approach to sound design with this synthesizer. Rotate a sphere with over 70 presets to discover ideal sounds, enhanced by a stereo ping-pong delay and global settings. It's AUv3 compatible for use within other music production apps.
- Spherical sound exploration
- AUv3 plugin compatibility
- High-quality audio engine
- Stereo ping-pong delay
- Legato mode with glide
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This synthesizer offers a brand new way of finding the optimal sound. By rotating a sphere that consists of more than 70 professionally created states anyone can dial in the perfect sound. In addition to the sphere, a ping-pong delay and a few more global settings are available. SyndtSphere is based on the more traditional polyphonic synthesizer Syndt (also available on the App Store). A video demo is available at the developers website. Features: • AUv3 Compatible - use it as a plugin inside Garageband or any other AUv3 compatible host app. • High quality internal audio engine. • Stereo ping-pong delay • Optional legato mode with glide speed setting. Feedback or suggestions? Drop us a mail: support(at)klevgrand.se or @klevgrand on Twitter
Stellarvox
Design immersive ambient soundscapes with a hybrid reverb and artificial space designer. Create lush textures, deep spaces, and whispering backgrounds for electronic, experimental, and sound design projects. Offers intuitive controls and inspiring presets for quick, high-quality results.
- Hybrid reverb with artificial space designer
- Algorithmic reflections tail processing
- Dynamic timbre changes over time
- Geometry and dimension control
- Factory presets and random feature
- MIDI learn support
- Standalone and AUv3 module
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Hybrid reverb with an artificial space designer, combining it with algorithmic reflections tail processing, is ideal to creating immersive ambience of deep spaces, lush atmospheric textures or stunning whispering backgrounds in your ambient, electronic, experimental and sound design projects. Unlike traditional algorithmic reverbs, Stellarvox constructs a complex model of a vast resonant sound spaces with choice of geometry, dimensions and tonal structure of the space, along with a unique feature that dynamically change the timbre of reflections over the reverberation time. The second algorithmic reverb allows you to prolong and blur reflections, adding extra dimensions to the sound space. Easy-to-use controls on a single screen, along with optimally designed parameters that always give great results, make insignificant the peculiarity of that kind of reverbs, when the model creates with a little delay after changing it. Factory presets and the random feature will give you a starting point of inspiration and allow you to get a quick result where you need just to slightly tweak the parameters to align with your idea. This application is great for ambient projects, it can create mesmerizing atmosphere from single infrequent sounds of various instruments, or giving a beautiful and deep backgrounds to sharp sequences in electronics, as well as for any experimental projects that require unusual, deep and rich sound ambience. Stellarvox is a universal application for iOS and macOS. It can work on iPhone and iPad as well as Mac / MacBook with M1 chip (and later). Stellarvox works on iPhone and iPad standalone, as an Audio Unit or Inter-App Audio module, with supports Audiobus host app. On MacOS, Stellarvox can works both as a standalone application and as an Audio unit (AUv3) with DAWs and other hosts that support AUv3 plugins. All application features are available on iOS and macOS, including MIDI support (with a MIDI learn option) and audio unit parameters. Stellarvox has a built-in detailed description of all parameters also available as PDF file on the application site. Sound demo: https://www.youtube.com/watch?v=TEtZfvLtJy8 https://www.youtube.com/watch?v=FqCYa1tp2Qw You can find more information on Stellarvox and other audio apps at: https://motion-soundscape.blogspot.com
Screenshots
Verdict
The clearest difference is review sentiment: Stellarvox at 100% against SyndtSphere's 40%. Stellarvox also leads on rating (5.0 vs 3.7) and update cadence (every 5 months vs every 23 months). SyndtSphere's advantage is price ($1.99 vs $11.99) and iOS requirement (13.0 vs 15.0). On ratings volume, ads, in-app purchases and monetization model 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
SyndtSphere costs $1.99 and Stellarvox $11.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stellarvox holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 18 and 11 respectively. Written reviews point the same way: 40% of SyndtSphere's written reviews are positive against 100% of Stellarvox's.
SyndtSphere ships an update every 23 months, Stellarvox every 5 months. Both last shipped on October 9, 2026.
| Parameter | SyndtSphere | Stellarvox |
|---|---|---|
| Price | $1.99 — better | $11.99 |
| Rating | 3.7 (18 ratings) | 5.0 (11 ratings) — better |
| Positive reviews | 40.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 18 — better | 11 |
| Update frequency | Every 23 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 15 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Klevgrand Produkter AB | Igor Vasiliev |
Customer experience
SyndtSphere
Stellarvox
In-app purchases
SyndtSphere
No in-app purchases
Stellarvox
No in-app purchases








