# ButterSynth vs BLEASS Megalit

The clearest difference is rating: BLEASS Megalit at 4.6 against ButterSynth's 4.0. BLEASS Megalit also leads on review sentiment (72% vs 60%). ButterSynth's advantage is in-app purchases (none vs 13) and update cadence (every 2 months vs every 6 months). On price, ratings volume, ads and monetization model there is nothing between them.

ButterSynth costs $19.99 and BLEASS Megalit $19.99 up front. BLEASS Megalit sells 13 one-off in-app purchases. ButterSynth asks for nothing beyond the download.

BLEASS Megalit holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 62 and 32 respectively. Written reviews point the same way: 60% of ButterSynth's written reviews are positive against 72% of BLEASS Megalit's.

ButterSynth ships an update every 2 months, BLEASS Megalit every 6 months. The most recent releases landed on September 24, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | ButterSynth | BLEASS Megalit |
| --- | --- | --- |
| Price | $19.99 | $19.99 |
| Rating | [4.0 (62 ratings)](https://appshunter.io/ios/app/buttersynth/id1497419006/reviews) | **[4.6 (32 ratings)](https://appshunter.io/ios/app/bleass-megalit/id1596728818/reviews)** |
| Number of ratings | **62** | 32 |
| Positive reviews | 59.6% of reviews | **72.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Paid | Paid |
| Size | 468 MB | 172 MB |
| Requires iOS | **14.0** | 15.0 |
| 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 Megalit

[App page](https://appshunter.io/ios/app/bleass-megalit/id1596728818)

This powerful music synthesizer offers a vast sonic palette with advanced wavetable and subtractive oscillators, flexible filtering, and extensive modulation sources. Its intuitive interface makes complex sound design accessible to all musicians.

**Highlights:** Advanced wavetable oscillators, Per-oscillator unison mode, Noise generator with filtering, Resonant filters and waveshaper, Multiple LFOs for complex modulation, Motion Sequencer for repeating patterns, Built-in multi-band compressor

**Features:** Family Sharing

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Electronisounds Presets Pack | Free | one-time |
| Conrad Keely Preset Pack | Free | one-time |
| FXs & Risers Preset Pack | Free | one-time |
| Oddity Preset Pack | $0.99 | one-time |
| Lektrique Preset Pack | $0.99 | one-time |
| Pogman Preset Pack | $1.99 | one-time |
| VNR Preset Pack | $1.99 | one-time |
| Instant Sounds Preset Pack | $1.99 | one-time |
| ERAE Preset Pack | $3.99 | one-time |
| Megalight Preset Pack | $3.99 | one-time |
| Expressive Presets Pack #1 | $3.99 | one-time |
| The Sound Test Room Pack | $3.99 | one-time |
| The Sound Test Room Pack #2 | $4.99 | one-time |


## Frequently asked questions

### Is ButterSynth free?

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

### Is BLEASS Megalit free?

BLEASS Megalit costs $19.99, and also offers in-app purchases.

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

BLEASS Megalit is rated higher. ButterSynth averages 4.0 out of 5 from 62 ratings, while BLEASS Megalit averages 4.6 from 32 ratings.

### Do ButterSynth or BLEASS Megalit have ads?

Neither ButterSynth nor BLEASS Megalit shows ads.

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

ButterSynth ships an update every 2 months, and BLEASS Megalit every 6 months. Most recently, ButterSynth was updated on September 24, 2026 and BLEASS Megalit on September 20, 2026.

---

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