VoxSyn vs SyndtSphere
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VoxSyn
Transform your voice into a versatile vocal sound generator. This app captures your vocal modulations to create unique sounds beyond traditional vocoding, allowing you to trigger synthesizer sounds with your voice or a keyboard. Expand your sonic palette with a vast pool of presets and effects.
- Voice control of pitch and timbre
- 22-channel vocoder
- Integrated preset synthesizer engine
- Hundreds of presets
- Hi-end audio effects
- Audiobus and Inter App Audio compatible
- MIDI and background audio support
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VoxSyn turns your voice into the most flexible vocal sound generator ever. Instantly following even subtle modulations of pitch and spectral changes of your voice VoxSyn creates signature vocal sounds far beyond traditional vocoding. Talk or sing into the microphone and you’ll trigger various synthesizer sounds following your voice pitch or the notes touched on the hexagonal keyboard / external MIDI Keyboard. The basic sounds are selected from a vast pool of predefined sounds from the famous TERA synthesis engine which can be further expanded by its unique random sound generator. The harmonic table note layout visualizes your voices pitch in realtime and also let you play notes for more traditional vocoder effects. VoxSyn is Audiobus compatible and can be used in the Input, Filter and Output slots in the Audiobus signal chain. The output can be recorded to an audio file which you can use with other Apps and programs for further processing. Features: - Voice control of pitch and timbre - 22-channel Vocoder - Integrated preset synthesizer engine - Hundreds of presets included - Hi-end Reverb and Chorus/Delay/Distortion/Phaser effects - Share/Export of audio recordings - CoreMIDI / Virtual MIDI and Background audio - Inter App Audio compatible - Audiobus 2 support (Input/Filter/Output) with state saving
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
Screenshots
Verdict
The clearest difference is rating: SyndtSphere at 3.7 against VoxSyn's 3.1. VoxSyn's advantage is update cadence (every 9 days vs every 23 months) and review sentiment (48% vs 40%). 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
VoxSyn costs $0.99 and SyndtSphere $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SyndtSphere holds the better App Store score, 3.7 against 3.1. Both are backed by a comparable volume of ratings — 18 and 18 respectively. Written reviews complicate that: 48% of VoxSyn's written reviews are positive against 40% of SyndtSphere's, so the app with the better star average is not the one people write more warmly about.
VoxSyn ships an update every 9 days, SyndtSphere every 23 months. Both last shipped on October 24, 2026.
| Parameter | VoxSyn | SyndtSphere |
|---|---|---|
| Price | $0.99 — better | $1.99 |
| Rating | 3.1 (18 ratings) | 3.7 (18 ratings) — better |
| Positive reviews | 48.1% of reviews — better | 40.0% of reviews |
| Number of ratings | 18 | 18 |
| Update frequency | Every 9 days — better | Every 23 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 31 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | Klevgrand Produkter AB |
Customer experience
VoxSyn
SyndtSphere
In-app purchases
VoxSyn
No in-app purchases
SyndtSphere
No in-app purchases
