# iKoto vs Koto Sim

The clearest difference is price: Koto Sim at Free against iKoto's $2.99. Koto Sim also leads on rating (5.0 vs 4.5) and update cadence (every 4 weeks vs every 2 months). iKoto's advantage is in-app purchases (none vs 1) and ads (none vs shown). On ratings volume, device support and iOS requirement there is nothing between them.

Koto Sim is free to download; iKoto costs $2.99 up front. Koto Sim sells 1 one-off in-app purchase. iKoto asks for nothing beyond the download.

Koto Sim holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 8 and 4 respectively.

iKoto ships an update every 2 months, Koto Sim every 4 weeks. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | iKoto | Koto Sim |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.5 (8 ratings)](https://appshunter.io/ios/app/ikoto/id290600207/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/koto-sim/id6740201723/reviews)** |
| Number of ratings | **8** | 4 |
| Positive reviews | 85.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 125 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GClue, Inc.](https://appshunter.io/developer/290600210) | [Alper Kahriman](https://appshunter.io/developer/1054578352) |

## What reviewers say

### iKoto

[App page](https://appshunter.io/ios/app/ikoto/id290600207)

Experience the traditional Japanese Koto (harp) on your iPhone. This app allows you to play oriental melodies, record your performances, and utilize features like tone scale changes and pitch bends. Enjoy a selection of sample music and export your recordings.

**Highlights:** Virtual Koto instrument, Recording function, Tone scale changes, Pitch-bend function, WAV file export via WiFi, Preset tone scales, Sample music included

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🎵 Beautiful, authentic koto sound quality
- 👍 Easy to use interface for beginners
- 🎹 Multiple tuning scales available
- 🎚️ Pitch bend functionality for expression
- 💾 Recording and playback features

**What reviewers complain about**

- 🐛 App crashes on launch or during use
- 🔇 Sound not working in certain conditions
- 📵 Requires phone to be unmuted to function
- 🎚️ Tuning selection UI displays as blank/white text
- 📱 Display scaling issues on various devices

**Reported bugs**

- App crashes on startup or immediately after opening
- Sound output fails without clear cause
- Tuning selection screen displays blank/white text
- Unable to change tuning modes
- App crashes when entering settings or changing notes

**Requested features**

- Custom tuning/string adjustment capability
- Support for modern music scales and genres
- More pre-recorded demo songs
- Ability to save unlimited recordings
- MIDI file import/export functionality


### Koto Sim

[App page](https://appshunter.io/ios/app/koto-sim/id6740201723)

Experience the authentic sound and feel of Japan's national string instrument. This app offers realistic koto tones, customizable interfaces, and multiple play modes for musicians and enthusiasts. Record and share your creations within an immersive simulation.

**Highlights:** Authentic koto sounds, Customizable interface and tuning, Three dynamic play modes, Built-in recorder, Screen recording for sharing, Immersive simulation environment

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get Premium | $8.99 | one-time |


## Frequently asked questions

### Is iKoto free?

iKoto costs $2.99, with no in-app purchases.

### Is Koto Sim free?

Koto Sim is free to download, with in-app purchases available.

### Which has better reviews, iKoto or Koto Sim?

Koto Sim is rated higher. iKoto averages 4.5 out of 5 from 8 ratings, while Koto Sim averages 5.0 from 4 ratings.

### Do iKoto or Koto Sim have ads?

Koto Sim shows ads; iKoto does not.

### Which is updated more often, iKoto or Koto Sim?

iKoto ships an update every 2 months, and Koto Sim every 4 weeks. Most recently, iKoto was updated on October 17, 2026 and Koto Sim on October 6, 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.*