# JCBlock vs YAM

The clearest difference is in-app purchases: JCBlock at none against YAM's 3. YAM's advantage is update cadence (every 10 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. YAM sells 3 one-off in-app purchases. JCBlock asks for nothing beyond the download.

JCBlock ships an update every 4 months, YAM every 10 days. The most recent releases landed on September 22, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | JCBlock | YAM |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 8 MB | 599 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [InSoo Kim](https://appshunter.io/developer/975978291) | [weclover. Inc.](https://appshunter.io/developer/1631781617) |

## What reviewers say

### JCBlock

[App page](https://appshunter.io/ios/app/jcblock/id1490437926)

Control drones and coding boards using block-based programming. This educational tool allows users to create code for various devices like JDKit, JDCode, JCBoard, and Arduino.

**Highlights:** Block-based coding interface, Drone control (JDKit, JDCode), Coding board control (JCBoard, UglyBot, Arduino, RoboDog), Educational programming tool, Device compatibility

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

**In-app purchases:** none


### YAM

[App page](https://appshunter.io/ios/app/yam-e-coding/id1631781495)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1개월 이용권 | $9.99 | one-time |
| 3개월 이용권 | $29.99 | one-time |
| 12개월 이용권 | $99.99 | one-time |


## Frequently asked questions

### Is JCBlock free?

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

### Is YAM free?

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

### Do JCBlock or YAM have ads?

Neither JCBlock nor YAM shows ads.

### Which is updated more often, JCBlock or YAM?

JCBlock ships an update every 4 months, and YAM every 10 days. Most recently, JCBlock was updated on September 22, 2026 and YAM on September 15, 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.*