Jussi vs Async Sampler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Jussi
This app is a unique vocal synthesizer that emulates male voice vowels with powerful parameters. Control formants with MIDI velocity for expressive vocalizations, from soft choir sounds to intense shouts. It offers advanced features like ADSR, voice character control, and throat emulation.
- AUv3 compatibility
- ADSR with pitch mapping
- Voice character XY pad
- Legato and Legato Hold modes
- Throat emulation XY pad
- Built-in reverb
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This synthesizer emulates male voice vowels in a unique way. Thanks to a set of powerful parameters you can make Jussi sing anything from soft and airy choir-like vowels to hard and angry shouting. Formants are controlled by playing with different velocity, which makes it fun and easy to play using a MIDI keyboard. Features: • AUv3, works with AUv3 compatible hosts like Garageband, Cubasis, AUM etc. • ADSR with ”Turn-in” and ”Turn-out” option (Turn-in and Turn-out affects the pitch and maps it to attack and release) • Voice character XY pad (Intensity and Narrowness) • Legato mode (glides between notes and velocity levels) • Legato Hold mode (polyphonic legato when using a sustain controller, consult the documentation for more info) • Throat emulation XY pad (Grain and Tonality) • Built-in reverb iPhone 6 or later is recommended. iPad 4 or later is recommended. Documentation is available at https://klevgrand.se/products/jussi Feedback or suggestions? Drop us a mail: support(at)klevgrand.se or @klevgrand on Twitter
Async Sampler
Create captivating sound collages, dynamic textures, and rhythmic patterns with this powerful musical instrument. It offers asynchronous and synchronous playback modes, a versatile LFO, and an effects processor to elevate your sound design.
- Standalone and AUv3 versions
- Three independent samplers
- Extensive sample library
- Upload your own samples
- Asynchronous and synchronous playback
- Flexible LFO system
- Effects processor
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Async Sampler, a powerful musical instrument designed to bring your soundscapes to life. This flexible tool is dedicated to crafting captivating sound collages, dynamic asynchronous textures, rhythmic patterns, and rich sound designs. It opens up a world of creative possibilities, making it the perfect companion for music producers, sound designers, ambient, and noise enthusiasts. Whether you're a seasoned musician or a curious explorer, Async Sampler is here to inspire and elevate your musical journey. App comes with a rich library of unique samples, and you can easily upload and use your own sounds. Async Sampler fundamentally consists of three samplers that can reproduce sound asynchronously, meaning they can operate without being tied to a specific BPM, or synchronously, using an external MIDI clock source or the tempo of your project if you're using Async Sampler as an AUv3 plugin. The instrument features a versatile LFO that allows you to control any parameter. Async includes an effects processor and a master bus section. Also, you have the option to use external MIDI controllers, save and load your custom presets and samples, among other features. Key features: — Standalone and AUv3 versions — Three independent samplers — Extensive sample library out of the box — Ability to upload your own samples — Asynchronous and synchronous playback modes for each sample — Flexible LFO system that can control almost any parameter — Effects processor — Ability to save presets — And much more
Screenshots
Verdict
The clearest difference is rating: Async Sampler at 4.5 against Jussi's 3.6. Async Sampler also leads on review sentiment (78% vs 47%) and update cadence (every 2 weeks vs every 5 months). Jussi's advantage is price ($8.99 vs $14.99). 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
Jussi costs $8.99 and Async Sampler $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Async Sampler holds the better App Store score, 4.5 against 3.6. Both are backed by a comparable volume of ratings — 14 and 18 respectively. Written reviews point the same way: 47% of Jussi's written reviews are positive against 78% of Async Sampler's.
Jussi ships an update every 5 months, Async Sampler every 2 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | Jussi | Async Sampler |
|---|---|---|
| Price | $8.99 — better | $14.99 |
| Rating | 3.6 (14 ratings) | 4.5 (18 ratings) — better |
| Positive reviews | 47.1% of reviews | 77.8% of reviews — better |
| Number of ratings | 14 | 18 — better |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 235 MB |
| Age rating | 4+ | 4+ |
| Developer | Klevgrand Produkter AB | Sergei Zhulkov |
Customer experience
Jussi
Async Sampler
In-app purchases
Jussi
No in-app purchases
Async Sampler
No in-app purchases








