# JCBlock vs 아이시선

The clearest difference is update cadence: 아이시선 at every 2 weeks against JCBlock's every 4 months. JCBlock's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

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

JCBlock ships an update every 4 months, 아이시선 every 2 weeks. The most recent releases landed on October 25, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | JCBlock | 아이시선 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 8 MB | 58 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [InSoo Kim](https://appshunter.io/developer/975978291) | [HoGeun Jo](https://appshunter.io/developer/1795411516) |

## 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


### 아이시선

[App page](https://appshunter.io/ios/app/id6760978295)

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

**In-app purchases:** none


## Frequently asked questions

### Is JCBlock free?

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

### Is 아이시선 free?

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

### Do JCBlock or 아이시선 have ads?

Neither JCBlock nor 아이시선 shows ads.

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

JCBlock ships an update every 4 months, and 아이시선 every 2 weeks. Most recently, JCBlock was updated on October 25, 2026 and 아이시선 on October 5, 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.*