# ButterSynth vs BLEASS Arpeggiator

The clearest difference is rating: BLEASS Arpeggiator at 4.8 against ButterSynth's 4.0. BLEASS Arpeggiator also leads on price ($14.99 vs $19.99) and review sentiment (75% vs 59%). ButterSynth's advantage is update cadence (every 2 months vs every 6 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

ButterSynth costs $19.99 and BLEASS Arpeggiator $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BLEASS Arpeggiator holds the better App Store score, 4.8 against 4.0. Both are backed by a comparable volume of ratings — 63 and 54 respectively. Written reviews point the same way: 59% of ButterSynth's written reviews are positive against 75% of BLEASS Arpeggiator's.

ButterSynth ships an update every 2 months, BLEASS Arpeggiator every 6 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ButterSynth | BLEASS Arpeggiator |
| --- | --- | --- |
| Price | $19.99 | **$14.99** |
| Rating | [4.0 (63 ratings)](https://appshunter.io/ios/app/buttersynth/id1497419006/reviews) | **[4.8 (54 ratings)](https://appshunter.io/ios/app/bleass-arpeggiator/id6464041408/reviews)** |
| Number of ratings | **63** | 54 |
| Positive reviews | 59.2% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Paid | Paid |
| Size | 468 MB | 20 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Arto Vaarala](https://appshunter.io/developer/890886114) | [BLEASS](https://appshunter.io/developer/1220444177) |

## What reviewers say

### ButterSynth

[App page](https://appshunter.io/ios/app/buttersynth/id1497419006)

This powerful synthesizer app offers a hybrid approach, combining wavetable, FM, and sample-based synthesis. Create unique sounds with a vast sonic range, advanced modulation, and a built-in effects rack. It caters to both experienced sound designers and beginners with extensive presets.

**Highlights:** Hybrid 6-oscillator synthesis (wavetable, FM, sample), Built-in wavetable editor, FM engine with 4 operators, Sample and Granulator engines, 32-slot modulation matrix, Internal FX rack with 16 modules, Extensive preset library

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ✨ Deep sound design capabilities
- 🎛️ Versatile modulation matrix
- 🔊 Great sound quality
- 💡 Innovative wavetable generator
- 🌟 Serum-like experience

**What reviewers complain about**

- 📱 Fiddly on small screens
- 🐛 Crashes frequently
- 🐛 Disappears in Cubasis
- 🐛 Spikes CPU usage
- 🐛 Crashes on patch change

**Reported bugs**

- App crashing with AUM
- Disappears in Cubasis randomly
- Crashes all the time inside Logic
- Changing a patch spikes CPU to 99%
- Crashes on every patch change

**Requested features**

- MPE popup possible on top of the auv3
- Button to hide built-in keyboard
- Buffer size option
- Additional MIDI mappings (e.g., arpeggiator toggle)
- Sustain pedal support


### BLEASS Arpeggiator

[App page](https://appshunter.io/ios/app/bleass-arpeggiator/id6464041408)

This app offers advanced arpeggiation capabilities for musicians, going beyond traditional patterns with polyrhythms and polyphony. Its intuitive interface encourages on-the-fly experimentation, enhanced by performance controllers, LFOs, and a motion sequencer. It also includes a built-in FM synth for sound generation or can be used with other instruments.

**Highlights:** Advanced arpeggiation patterns, Polyphony and polyrhythms, Hands-on creative interface, XY pads and LFOs, Motion Sequencer, Built-in FM synth, MIDI output for external synths

**In-app purchases:** none


## Frequently asked questions

### Is ButterSynth free?

ButterSynth costs $19.99, with no in-app purchases.

### Is BLEASS Arpeggiator free?

BLEASS Arpeggiator costs $14.99, with no in-app purchases.

### Which has better reviews, ButterSynth or BLEASS Arpeggiator?

BLEASS Arpeggiator is rated higher. ButterSynth averages 4.0 out of 5 from 63 ratings, while BLEASS Arpeggiator averages 4.8 from 54 ratings.

### Do ButterSynth or BLEASS Arpeggiator have ads?

Neither ButterSynth nor BLEASS Arpeggiator shows ads.

### Which is updated more often, ButterSynth or BLEASS Arpeggiator?

ButterSynth ships an update every 2 months, and BLEASS Arpeggiator every 6 months. Most recently, ButterSynth was updated on October 27, 2026 and BLEASS Arpeggiator on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*