# Koto Sim vs Guzheng ´

The clearest difference is rating: Koto Sim at 5.0 against Guzheng ´'s 1.0. Koto Sim also leads on ratings volume (4 vs 1) and iOS requirement (12.0 vs 15.0). Guzheng ´'s advantage is update cadence (every 8 days vs every 4 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Koto Sim sells 1 one-off in-app purchase and Guzheng ´ sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Koto Sim holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Koto Sim ships an update every 4 weeks, Guzheng ´ every 8 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Koto Sim | Guzheng ´ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/koto-sim/id6740201723/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/guzheng/id6805770044/reviews) |
| Number of ratings | **4** | 1 |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 125 MB | 40 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alper Kahriman](https://appshunter.io/developer/1054578352) | [Tran Tien](https://appshunter.io/developer/1896642398) |

## What reviewers say

### 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 |


### Guzheng ´

[App page](https://appshunter.io/ios/app/guzheng/id6805770044)

This app transforms your iPhone into a playable 21-string Chinese zither, featuring real recorded samples for authentic sound. Explore multiple stringed voices, customize board styles, and tune with built-in tools. Record your performances as MIDI or audio and play along with imported tracks.

**Highlights:** Real recorded guzheng samples, Multiple stringed voices, Customizable board styles, Built-in tuning fork and metronome, MIDI and audio recording, Play along with backing tracks

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | one-time |


## Frequently asked questions

### Is Koto Sim free?

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

### Is Guzheng ´ free?

Guzheng ´ is free to download, with in-app purchases available.

### Which has better reviews, Koto Sim or Guzheng ´?

Koto Sim is rated higher. Koto Sim averages 5.0 out of 5 from 4 ratings, while Guzheng ´ averages 1.0 from 1 ratings.

### Do Koto Sim or Guzheng ´ have ads?

Both Koto Sim and Guzheng ´ show ads.

### Which is updated more often, Koto Sim or Guzheng ´?

Koto Sim ships an update every 4 weeks, and Guzheng ´ every 8 days. Most recently, Koto Sim was updated on October 30, 2026 and Guzheng ´ on October 31, 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.*