# O'Reilly vs Ice Cert Engines

The clearest difference is review sentiment: O'Reilly at 46% against Ice Cert Engines's 0%. O'Reilly also leads on rating (4.7 vs 2.0) and update cadence (fortnightly vs every 4 months). Ice Cert Engines's advantage is monetization model (free vs subscription) and device support (4 vs 2). On price, ads and in-app purchases there is nothing between them.

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

O'Reilly holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: O'Reilly has 34K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 46% of O'Reilly's written reviews are positive against 0% of Ice Cert Engines's.

O'Reilly ships an update fortnightly, Ice Cert Engines every 4 months. The most recent releases landed on October 21, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | O'Reilly | Ice Cert Engines |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (34K ratings)](https://appshunter.io/ios/app/oreilly/id881697395/reviews)** | [2.0 (4 ratings)](https://appshunter.io/ios/app/ice-cert-engines/id6444431741/reviews) |
| Number of ratings | **34K** | 4 |
| Positive reviews | **46.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Subscription | **Free** |
| Size | 64 MB | 23 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [O'Reilly Media, Inc.](https://appshunter.io/developer/312570215) | [爱月 陈](https://appshunter.io/developer/1647338655) |

## What reviewers say

### O'Reilly

[App page](https://appshunter.io/ios/app/oreilly/id881697395)

Access a vast library of expert-led books, videos, and courses on business and technology trends. Learn online or offline, sync progress across devices, and personalize your reading experience. Discover and organize content with playlists for easy access.

**Highlights:** Offline access to books, videos, and courses, Cross-device progress syncing, Content discovery and playlist creation, Personalized text display and night mode, Search across all learning materials, External keyboard support

**Features:** iMessage stickers, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Great resource for learning
- 👍 Excellent content and library
- 💡 Helpful features like playlists
- 🚀 Offline reading and downloads

**What reviewers complain about**

- 🐛 Buggy app with crashes and issues
- 👎 Poor reading experience and navigation
- 🔒 Frequent login issues
- 👎 Inconsistent sync across devices

**Reported bugs**

- Frequent crashes and freezes
- Unreliable downloads and offline access
- Login issues and loss of progress
- Inconsistent behavior across updates

**Requested features**

- Improved bookmarking and note-taking
- Customizable text formatting and layout
- Better search and content discovery
- Seamless sync across devices


### Ice Cert Engines

[App page](https://appshunter.io/ios/app/ice-cert-engines/id6444431741)

Prepare for certification exams with a realistic testing experience. This application simulates actual exam conditions using .ICE files. It's designed to help you get accustomed to the pressure and format of certification tests.

**Highlights:** Realistic exam simulation, Supports .ICE files, Certification exam preparation, Simulates real exam environment

**In-app purchases:** none


## Frequently asked questions

### Is O'Reilly free?

O'Reilly is free to download, with no in-app purchases.

### Is Ice Cert Engines free?

Ice Cert Engines is free to download, with no in-app purchases.

### Which has better reviews, O'Reilly or Ice Cert Engines?

O'Reilly is rated higher. O'Reilly averages 4.7 out of 5 from 34K ratings, while Ice Cert Engines averages 2.0 from 4 ratings.

### Do O'Reilly or Ice Cert Engines have ads?

Neither O'Reilly nor Ice Cert Engines shows ads.

### Which is updated more often, O'Reilly or Ice Cert Engines?

O'Reilly ships an update fortnightly, and Ice Cert Engines every 4 months. Most recently, O'Reilly was updated on October 21, 2026 and Ice Cert Engines on October 3, 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.*