# Readcasa vs Interesting Engineering

The clearest difference is in-app purchases: Readcasa at none against Interesting Engineering's 6. Readcasa also leads on ads (none vs shown) and iOS requirement (10.0 vs 16.0). Interesting Engineering's advantage is update cadence (every 10 days vs monthly). On price and device support there is nothing between them.

Both are free to download. Interesting Engineering sells 6 in-app purchases, starting at $4.99 per month. Readcasa asks for nothing beyond the download.

Readcasa ships an update monthly, Interesting Engineering every 10 days. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Readcasa | Interesting Engineering |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (126 ratings)](https://appshunter.io/ios/app/interesting-engineering-news/id6742738331/reviews)** |
| Number of ratings | — | **126** |
| Positive reviews | — | 70.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | — | Free with in-app purchases |
| Size | 31 MB | 117 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Chun Yong Lee](https://appshunter.io/developer/1139139850) | [IE Media, Inc.](https://appshunter.io/developer/1799661857) |

## What reviewers say

### Readcasa

[App page](https://appshunter.io/ios/app/readcasa-digital-library/id1115039563)

**Features:** macOS Compatibility

**In-app purchases:** none


### Interesting Engineering

[App page](https://appshunter.io/ios/app/interesting-engineering-news/id6742738331)

Stay informed with the latest advancements in technology, science, and engineering. Access exclusive content, personalized news feeds, and engaging quizzes. Designed for a clean and focused reading experience.

**Highlights:** Cutting-edge discoveries, AI, renewable energy, space coverage, Premium interviews and podcasts, Personalized news feeds, Exclusive articles and videos, Daily quizzes and Wordle, Dark mode

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $4.99 | per month |
| Quarterly Plan | $16.99 | per 3 months |
| IE+ 3 day Trial Yearly Subscription | $41.99 | per year |
| IE+ Yearly Special Offer | $41.99 | per year |
| Annually Plan | $41.99 | per year |
| Annually Plan | $41.99 | per year |


## Frequently asked questions

### Is Readcasa free?

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

### Is Interesting Engineering free?

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

### Do Readcasa or Interesting Engineering have ads?

Interesting Engineering shows ads; Readcasa does not.

### Which is updated more often, Readcasa or Interesting Engineering?

Readcasa ships an update monthly, and Interesting Engineering every 10 days. Most recently, Readcasa was updated on October 26, 2026 and Interesting Engineering on October 30, 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.*