# Encyclopedia vs Grade 8 Math Practice

The clearest difference is price: Encyclopedia at Free against Grade 8 Math Practice's $0.49. Encyclopedia also leads on update cadence (weekly vs every 3 weeks). Grade 8 Math Practice's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 15.0). On ads and device support there is nothing between them.

Encyclopedia is free to download; Grade 8 Math Practice costs $0.49 up front. Encyclopedia sells 1 one-off in-app purchase. Grade 8 Math Practice asks for nothing beyond the download.

Encyclopedia ships an update weekly, Grade 8 Math Practice every 3 weeks. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Encyclopedia | Grade 8 Math Practice |
| --- | --- | --- |
| Price | **Free** | $0.49 |
| Rating | **[4.4 (15 ratings)](https://appshunter.io/ios/app/encyclopedia-world-war-ii/id1126983872/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 501 MB | 23 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Good Spider, LLC](https://appshunter.io/developer/1487595667) | [Manish Kumar](https://appshunter.io/developer/1854995154) |

## What reviewers say

### Encyclopedia

[App page](https://appshunter.io/ios/app/encyclopedia-world-war-ii/id1126983872)

This app offers a comprehensive offline encyclopedia of World War II, featuring thousands of articles, HD photos, and an intuitive interface. It's designed for all ages, from children learning history to enthusiasts seeking detailed information, and includes a badge system to encourage reading.

**Highlights:** Thousands of articles, High-definition photos, Simple organization, Offline availability, Badge collection system, Suitable for all ages

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $9.99 | one-time |


### Grade 8 Math Practice

[App page](https://appshunter.io/ios/app/grade-8-math-practice/id6757122029)

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

**In-app purchases:** none


## Frequently asked questions

### Is Encyclopedia free?

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

### Is Grade 8 Math Practice free?

Grade 8 Math Practice costs $0.49, with no in-app purchases.

### Do Encyclopedia or Grade 8 Math Practice have ads?

Neither Encyclopedia nor Grade 8 Math Practice shows ads.

### Which is updated more often, Encyclopedia or Grade 8 Math Practice?

Encyclopedia ships an update weekly, and Grade 8 Math Practice every 3 weeks. Most recently, Encyclopedia was updated on October 11, 2026 and Grade 8 Math Practice on October 4, 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.*