# Sunrizer synth vs KORG iM1

The clearest difference is price: Sunrizer synth at $12.99 against KORG iM1's $29.99. Sunrizer synth also leads on in-app purchases (none vs 2) and iOS requirement (10.3 vs 12.0). KORG iM1's advantage is chart position (#46 vs unranked) and ratings volume (1K vs 183). On rating, review sentiment, update cadence and ads there is nothing between them.

Sunrizer synth costs $12.99 and KORG iM1 $29.99 up front. KORG iM1 sells 2 one-off in-app purchases. Sunrizer synth asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Sunrizer synth against 4.7 for KORG iM1. That said, the two scores are not equally well evidenced: KORG iM1 has 1K ratings behind it against 183, so its average is the more settled of the two. Written reviews are what separate them: 88% of Sunrizer synth's written reviews are positive against 82% of KORG iM1's.

Sunrizer synth ships an update every 6 months, KORG iM1 every 7 months. The most recent releases landed on October 13, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Sunrizer synth | KORG iM1 |
| --- | --- | --- |
| Price | **$12.99** | $29.99 |
| Rating | [4.7 (183 ratings)](https://appshunter.io/ios/app/sunrizer-synth/id443663267/reviews) | [4.7 (1K ratings)](https://appshunter.io/ios/app/korg-im1/id966030326/reviews) |
| Number of ratings | 183 | **1K** |
| Positive reviews | **87.8% of reviews** | 81.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 7 months |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | — | **#46** |
| Size | 28 MB | 200 MB |
| Requires iOS | **10.3** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BeepStreet](https://appshunter.io/developer/321412321) | [KORG INC.](https://appshunter.io/developer/363714046) |

## 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


### KORG iM1

[App page](https://appshunter.io/ios/app/korg-im1/id966030326)

**Currently charting:** #46 Top Paid · Music (US App Store)

This app faithfully reproduces the legendary M1 synthesizer, offering its iconic sounds and expanded features for modern music creation. It provides a vast library of presets and intuitive performance tools, making it accessible to both experienced musicians and beginners.

**Highlights:** Faithful reproduction of original M1 sound, Expanded filter resonance and 18 effects, Gigantic library of 3,300 sounds, Intuitive KAOSS pad for performance, Smart Sound Browser for quick sound selection, Compatible with KORG Gadget

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| M1 Cards Pack | $4.99 | one-time |
| T1 Cards Pack | $4.99 | one-time |

**What reviewers like**

- 👍 Authentic M1 sound reproduction
- 💰 Great value for money
- 🎹 Faithful recreation of the original hardware
- 🎨 Powerful sound customization options
- 🔗 Works well with MIDI controllers

**What reviewers complain about**

- 🐛 Occasional crashes or stability issues
- 🔇 Low output volume compared to other apps
- 🤔 Confusing UI for patch editing and saving
- 🔴 Missing AUv3 support for integration with DAWs

**Reported bugs**

- Disappearing or missing purchased sound cards
- Bluetooth MIDI connectivity issues
- Compatibility problems with certain iOS versions or devices

**Requested features**

- Add AUv3 support for better DAW integration
- Improve preset management and saving capabilities
- Increase master volume control options
- Expand sound library with more cards/expansions


## Frequently asked questions

### Is Sunrizer synth free?

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

### Is KORG iM1 free?

KORG iM1 costs $29.99, and also offers in-app purchases.

### Which has better reviews, Sunrizer synth or KORG iM1?

Sunrizer synth and KORG iM1 are both rated 4.7 out of 5 on the App Store, from 183 and 1K ratings respectively.

### Do Sunrizer synth or KORG iM1 have ads?

Neither Sunrizer synth nor KORG iM1 shows ads.

### Which is updated more often, Sunrizer synth or KORG iM1?

Sunrizer synth ships an update every 6 months, and KORG iM1 every 7 months. Most recently, Sunrizer synth was updated on October 13, 2026 and KORG iM1 on October 17, 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.*