# Learn to Code in React Js vs CiNii Research, KAKEN, IRDB

The clearest difference is price: CiNii Research, KAKEN, IRDB at Free against Learn to Code in React Js's $3.99. Learn to Code in React Js's advantage is review sentiment (40% vs 0%) and ads (none vs shown). On update cadence, in-app purchases and device support there is nothing between them.

CiNii Research, KAKEN, IRDB is free to download; Learn to Code in React Js costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Learn to Code in React Js ships an update every 4 months, CiNii Research, KAKEN, IRDB every 3 months. The most recent releases landed on September 16, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Learn to Code in React Js | CiNii Research, KAKEN, IRDB |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.6 (50 ratings)](https://appshunter.io/ios/app/learn-to-code-in-react-js/id1480799870/reviews)** | — |
| Number of ratings | **50** | — |
| Positive reviews | **40.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Paid | **Ad-supported** |
| Size | 33 MB | 11 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Shahbaz Khan](https://appshunter.io/developer/1479963383) | [FugaPiyo Inc.](https://appshunter.io/developer/1497887610) |

## What reviewers say

### Learn to Code in React Js

[App page](https://appshunter.io/ios/app/learn-to-code-in-react-js/id1480799870)

Master front-end development with a hands-on React tutorial and AI tutor. Learn core concepts, build real-world projects, and gain job-ready skills in weeks. Suitable for beginners and experienced developers.

**Highlights:** Interactive React tutorials, Build real-world projects, AI tutor for code help, Quizzes and knowledge checks, Practical code snippets, Learn core React basics and hooks

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

**In-app purchases:** none


### CiNii Research, KAKEN, IRDB

[App page](https://appshunter.io/ios/app/cinii-research-kaken-irdb/id1618150440)

This app provides a comprehensive search interface for academic literature, research data, and project information. It aggregates data from numerous databases, offering a free and unified platform for researchers and librarians. Access a vast collection of scholarly materials and research activities.

**Highlights:** Cross-search academic literature, Access research data, Find project information, Utilizes CiNii APIs, Free to use, Incorporates multiple databases

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Learn to Code in React Js free?

Learn to Code in React Js costs $3.99, with no in-app purchases.

### Is CiNii Research, KAKEN, IRDB free?

CiNii Research, KAKEN, IRDB is free to download, with no in-app purchases.

### Do Learn to Code in React Js or CiNii Research, KAKEN, IRDB have ads?

CiNii Research, KAKEN, IRDB shows ads; Learn to Code in React Js does not.

### Which is updated more often, Learn to Code in React Js or CiNii Research, KAKEN, IRDB?

Learn to Code in React Js ships an update every 4 months, and CiNii Research, KAKEN, IRDB every 3 months. Most recently, Learn to Code in React Js was updated on September 16, 2026 and CiNii Research, KAKEN, IRDB on September 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.*