# JCBlock vs Smart Prediger

The clearest difference is review sentiment: Smart Prediger at 86% against JCBlock's 0%. JCBlock's advantage is update cadence (every 4 months vs every 18 months) and iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and monetization model 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, Smart Prediger every 18 months. The most recent releases landed on September 7, 2026 and August 28, 2026 respectively.

## The numbers

| Metric | JCBlock | Smart Prediger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-prediger/id1641850349/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **85.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 18 months |
| Monetization | Free | Free |
| Size | 8 MB | 87 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [InSoo Kim](https://appshunter.io/developer/975978291) | [Prediger](https://appshunter.io/developer/1641850351) |

## 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


### Smart Prediger

[App page](https://appshunter.io/ios/app/smart-prediger/id1641850349)

This diagnostic application helps individuals assess their interests, aptitudes, and career paths. It provides personalized recommendations for majors, books, and role models, delivered via email for educational and organizational use.

**Highlights:** Intuitive self-diagnosis, Interest and aptitude assessment, Career and major recommendations, Personalized book suggestions, Role model identification, Email report delivery

**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 Smart Prediger free?

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

### Do JCBlock or Smart Prediger have ads?

Neither JCBlock nor Smart Prediger shows ads.

### Which is updated more often, JCBlock or Smart Prediger?

JCBlock ships an update every 4 months, and Smart Prediger every 18 months. Most recently, JCBlock was updated on September 7, 2026 and Smart Prediger on August 28, 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.*