# Opaline FM vs KAGARIBI

The clearest difference is update cadence: KAGARIBI at every 2 days against Opaline FM's every 6 days. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Opaline FM holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 3 and 4 respectively.

Opaline FM ships an update every 6 days, KAGARIBI every 2 days. The most recent releases landed on October 21, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Opaline FM | KAGARIBI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/opaline-fm/id6790603368/reviews)** | [4.5 (4 ratings)](https://appshunter.io/ios/app/kagaribi-auv3-synth/id6802303349/reviews) |
| Number of ratings | 3 | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 2 days** |
| Monetization | Free | Free |
| Size | 3 MB | 5 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Konishi](https://appshunter.io/developer/6790603370) | [Code and DESIGN inc.](https://appshunter.io/developer/1172903960) |

## What reviewers say

### Opaline FM

[App page](https://appshunter.io/ios/app/opaline-fm/id6790603368)

Create and perform music with a virtual keyboard and advanced sound editing tools. Explore various playing modes, connect external MIDI devices, and manage your sound library. Offers deep control over FM synthesis parameters.

**Highlights:** Virtual keyboard for immediate performance, Detailed sound editing (algorithm, operators, envelopes, LFO, effects), Poly/Mono and Full/Fingered portamento, Single, Dual, and Split playing modes, External MIDI keyboard support, 32-voice SysEx bank management, Built-in reverb, delay, chorus, and tone effects

**In-app purchases:** none


### KAGARIBI

[App page](https://appshunter.io/ios/app/kagaribi-auv3-synth/id6802303349)

This music creation tool allows users to shape and understand sound with a powerful synthesizer and an integrated sound anatomy feature. It offers extensive sound design capabilities, MIDI support, and advanced tuning options for both standalone use and as an AUv3 instrument.

**Highlights:** Dual oscillators with analog waveforms and wavetables, Extensive modulation matrix and effects suite, Integrated Sound Anatomy for sound explanation, Support for MPE and MIDI 2.0, Advanced tuning systems beyond 12-TET, Offline WAV export, Live Safe mode for reduced audio dropouts

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

**In-app purchases:** none


## Frequently asked questions

### Is Opaline FM free?

Opaline FM is free to download, with no in-app purchases.

### Is KAGARIBI free?

KAGARIBI is free to download, with no in-app purchases.

### Which has better reviews, Opaline FM or KAGARIBI?

Opaline FM is rated higher. Opaline FM averages 4.7 out of 5 from 3 ratings, while KAGARIBI averages 4.5 from 4 ratings.

### Do Opaline FM or KAGARIBI have ads?

Neither Opaline FM nor KAGARIBI shows ads.

### Which is updated more often, Opaline FM or KAGARIBI?

Opaline FM ships an update every 6 days, and KAGARIBI every 2 days. Most recently, Opaline FM was updated on October 21, 2026 and KAGARIBI on October 12, 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.*