# National Parks Encyclopedia vs Grade 8 Math Practice

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

National Parks Encyclopedia is free to download; Grade 8 Math Practice costs $0.49 up front. National Parks Encyclopedia sells 3 in-app purchases, starting at $2.99 per month. Grade 8 Math Practice asks for nothing beyond the download.

National Parks Encyclopedia ships an update weekly, Grade 8 Math Practice every 3 weeks. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | National Parks Encyclopedia | Grade 8 Math Practice |
| --- | --- | --- |
| Price | **Free** | $0.49 |
| Rating | **[4.9 (13 ratings)](https://appshunter.io/ios/app/national-parks-encyclopedia/id1131301628/reviews)** | — |
| Number of ratings | **13** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free | — |
| Size | 198 MB | 23 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Good Spider, LLC](https://appshunter.io/developer/1487595667) | [Manish Kumar](https://appshunter.io/developer/1854995154) |

## What reviewers say

### National Parks Encyclopedia

[App page](https://appshunter.io/ios/app/national-parks-encyclopedia/id1131301628)

Discover U.S. National Parks through thousands of articles and high-definition photos. This comprehensive guide offers engaging content suitable for all ages, with offline access for on-the-go learning. Earn badges as you explore.

**Highlights:** Thousands of articles and HD photos, Comprehensive U.S. National Parks information, Simple organization and user interface, Offline access, Badge collection system, Suitable for all ages

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Annual Premium | $19.99 | per year |
| 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 National Parks Encyclopedia free?

National Parks 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 National Parks Encyclopedia or Grade 8 Math Practice have ads?

Neither National Parks Encyclopedia nor Grade 8 Math Practice shows ads.

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

National Parks Encyclopedia ships an update weekly, and Grade 8 Math Practice every 3 weeks. Most recently, National Parks Encyclopedia was updated on November 2, 2026 and Grade 8 Math Practice on October 31, 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.*