# National Parks Encyclopedia vs DecipherInk

The clearest difference is rating: National Parks Encyclopedia at 4.9 against DecipherInk's 4.4. National Parks Encyclopedia also leads on ads (none vs shown) and update cadence (weekly vs every 5 weeks). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. National Parks Encyclopedia sells 3 in-app purchases, starting at $2.99 per month and DecipherInk sells 5 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

National Parks Encyclopedia holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 13 and 5 respectively.

National Parks Encyclopedia ships an update weekly, DecipherInk every 5 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | National Parks Encyclopedia | DecipherInk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (13 ratings)](https://appshunter.io/ios/app/national-parks-encyclopedia/id1131301628/reviews)** | [4.4 (5 ratings)](https://appshunter.io/ios/app/decipherink/id6742208925/reviews) |
| Number of ratings | **13** | 5 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 198 MB | 40 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Good Spider, LLC](https://appshunter.io/developer/1487595667) | [Glassfish Education, LLC](https://appshunter.io/developer/1797444818) |

## 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 |


### DecipherInk

[App page](https://appshunter.io/ios/app/decipherink/id6742208925)

Learn to read historical documents with this interactive app. It focuses on paleography, grammar, and vocabulary for genealogical research. Practice exercises enhance reading speed and retention.

**Highlights:** Paleography and script learning, Genealogical document vocabulary, Basic grammar for historical texts, Reading speed practice, Document deciphering exercises, Reference materials

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| German - 1 Week | $0.99 | per 7 days |
| German - 1 Month | $25.00 | per month |
| German - 3 Months | $254.99 | per 3 months |
| German - 1 Year | $274.99 | per year |
| German - 6 Months | $449.99 | per 6 months |


## Frequently asked questions

### Is National Parks Encyclopedia free?

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

### Is DecipherInk free?

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

### Which has better reviews, National Parks Encyclopedia or DecipherInk?

National Parks Encyclopedia is rated higher. National Parks Encyclopedia averages 4.9 out of 5 from 13 ratings, while DecipherInk averages 4.4 from 5 ratings.

### Do National Parks Encyclopedia or DecipherInk have ads?

DecipherInk shows ads; National Parks Encyclopedia does not.

### Which is updated more often, National Parks Encyclopedia or DecipherInk?

National Parks Encyclopedia ships an update weekly, and DecipherInk every 5 weeks. Most recently, National Parks Encyclopedia was updated on October 24, 2026 and DecipherInk on October 24, 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.*