# click & study vs Hidden Codes

The clearest difference is review sentiment: Hidden Codes at 47% against click & study's 10%. click & study's advantage is update cadence (monthly vs every 2 months). 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.

click & study ships an update monthly, Hidden Codes every 2 months. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | click & study | Hidden Codes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/hidden-codes/id1556450569/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 9.8% of reviews | **47.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | Free |
| Size | 55 MB | 202 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPad, Mac | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [C.C. Buchner Verlag GmbH & Co. KG](https://appshunter.io/developer/539964912) | [Meron Mendel](https://appshunter.io/developer/1556435681) |

## What reviewers say

### click & study

[App page](https://appshunter.io/ios/app/click-and-study/id1313728711)

Access your digital textbooks on your tablet and work offline. This app offers tools like highlighting, zooming, and a linked table of contents for efficient study.

**Highlights:** Download digital textbooks, Offline access, Highlighting, Zoom functionality, Linked table of contents, Bookmarks, Full-text search

**Features:** Vision Pro support

**In-app purchases:** none


### Hidden Codes

[App page](https://appshunter.io/ios/app/hidden-codes/id1556450569)

This educational game simulates a social media environment to teach young people about online radicalization. Players learn to identify problematic content and understand how extremist groups use digital media. It addresses topics like political codes, conspiracy myths, and how to respond to radicalization in one's social circle.

**Highlights:** Simulated social media environment, Identify problematic content, Understand extremist online tactics, Learn about political codes and myths, Guidance on responding to radicalization

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

**In-app purchases:** none


## Frequently asked questions

### Is click & study free?

click & study is free to download, with no in-app purchases.

### Is Hidden Codes free?

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

### Do click & study or Hidden Codes have ads?

Neither click & study nor Hidden Codes shows ads.

### Which is updated more often, click & study or Hidden Codes?

click & study ships an update monthly, and Hidden Codes every 2 months. Most recently, click & study was updated on October 1, 2026 and Hidden Codes on October 9, 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.*