# Sunrizer synth vs ButterSynth

The clearest difference is rating: Sunrizer synth at 4.7 against ButterSynth's 4.0. Sunrizer synth also leads on price ($12.99 vs $19.99) and review sentiment (88% vs 60%). ButterSynth's advantage is update cadence (every 2 months vs every 6 months) and chart position (#177 vs unranked). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Sunrizer synth costs $12.99 and ButterSynth $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sunrizer synth holds the better App Store score, 4.7 against 4.0. Both are backed by a comparable volume of ratings — 183 and 62 respectively. Written reviews point the same way: 88% of Sunrizer synth's written reviews are positive against 60% of ButterSynth's.

Sunrizer synth ships an update every 6 months, ButterSynth every 2 months. Both last shipped on September 29, 2026.

## The numbers

| Metric | Sunrizer synth | ButterSynth |
| --- | --- | --- |
| Price | **$12.99** | $19.99 |
| Rating | **[4.7 (183 ratings)](https://appshunter.io/ios/app/sunrizer-synth/id443663267/reviews)** | [4.0 (62 ratings)](https://appshunter.io/ios/app/buttersynth/id1497419006/reviews) |
| Number of ratings | **183** | 62 |
| Positive reviews | **87.8% of reviews** | 59.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#177** |
| Size | 28 MB | 468 MB |
| Requires iOS | **10.3** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BeepStreet](https://appshunter.io/developer/321412321) | [Arto Vaarala](https://appshunter.io/developer/890886114) |

## What reviewers say

### Sunrizer synth

[App page](https://appshunter.io/ios/app/sunrizer-synth/id443663267)

This virtual analog synthesizer offers a rich, warm sound with advanced features like SuperSaw emulation and morphing parameter control. It integrates seamlessly with MIDI hardware and sequencers, providing a professional-grade sound design experience on iOS.

**Highlights:** SuperSaw sound emulation, Dual filters with configurable routing, Morph Group for parameter control, CoreMidi and background audio support, Multi-mode oscillator multiplication, Microtuning support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🎨 Exceptional sound quality
- 👍 Intuitive and easy-to-use interface
- 🎹 Powerful and flexible synth engine
- 💡 Excellent preset library
- 🎚️ Comprehensive modulation and effects

**What reviewers complain about**

- 🐛 Occasional crashes and glitches
- 🔌 Compatibility issues with certain DAWs
- 🔇 Limited audio export options
- 🧭 Confusing preset management

**Reported bugs**

- Synth freezes when loading certain presets
- Inconsistent behavior when using multiple instances
- Graphical issues on newer iPad models

**Requested features**

- Improved MIDI integration and control
- Expanded arpeggiator and sequencing capabilities
- More advanced sound design tools
- Ability to save custom tunings


### ButterSynth

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

**Currently charting:** #177 Top Paid · Music (US App Store)

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


## Frequently asked questions

### Is Sunrizer synth free?

Sunrizer synth costs $12.99, with no in-app purchases.

### Is ButterSynth free?

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

### Which has better reviews, Sunrizer synth or ButterSynth?

Sunrizer synth is rated higher. Sunrizer synth averages 4.7 out of 5 from 183 ratings, while ButterSynth averages 4.0 from 62 ratings.

### Do Sunrizer synth or ButterSynth have ads?

Neither Sunrizer synth nor ButterSynth shows ads.

### Which is updated more often, Sunrizer synth or ButterSynth?

Sunrizer synth ships an update every 6 months, and ButterSynth every 2 months. Most recently, Sunrizer synth was updated on September 29, 2026 and ButterSynth on September 29, 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.*