Comparison

Jussi vs Async Sampler

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

Head to head
About

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.

Highlights
  • AUv3 compatibility
  • ADSR with pitch mapping
  • Voice character XY pad
  • Legato and Legato Hold modes
  • Throat emulation XY pad
  • Built-in reverb
Features
Read full description

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

About

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.

Highlights
  • Standalone and AUv3 versions
  • Three independent samplers
  • Extensive sample library
  • Upload your own samples
  • Asynchronous and synchronous playback
  • Flexible LFO system
  • Effects processor
Read full description

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

Jussi4 screens
Async Sampler3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Jussi costs $8.99 and Async Sampler $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Jussi versus Async Sampler: the parameters behind the verdict, then further details
ParameterJussiAsync Sampler
Price$8.99 — better$14.99
Rating3.6 (14 ratings)4.5 (18 ratings) — better
Positive reviews47.1% of reviews77.8% of reviews — better
Number of ratings1418 — better
Update frequencyEvery 5 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.011.0 — better
Further details — not scored
Size13 MB235 MB
Age rating4+4+
DeveloperKlevgrand Produkter ABSergei Zhulkov

Customer experience

Jussi

All ratings13 ratings
Positive69.2%
Neutral0.0%
Negative30.8%
Written reviews17 reviews
Positive47.1%
Neutral5.9%
Negative47.1%

Async Sampler

All ratings18 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews9 reviews
Positive77.8%
Neutral0.0%
Negative22.2%

In-app purchases

None

Jussi

No in-app purchases

None

Async Sampler

No in-app purchases

Questions

Is Jussi free?
Jussi costs $8.99, with no in-app purchases.
Is Async Sampler free?
Async Sampler costs $14.99, with no in-app purchases.
Which has better reviews, Jussi or Async Sampler?
Async Sampler is rated higher. Jussi averages 3.6 out of 5 from 14 ratings, while Async Sampler averages 4.5 from 18 ratings.
Do Jussi or Async Sampler have ads?
Neither Jussi nor Async Sampler shows ads.
Which is updated more often, Jussi or Async Sampler?
Jussi ships an update every 5 months, and Async Sampler every 2 weeks. Most recently, Jussi was updated on November 6, 2026 and Async Sampler on November 3, 2026.

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