# US History Encyclopedia vs NerdBook

The clearest difference is price: NerdBook at Free against US History Encyclopedia's $0.99. NerdBook also leads on update cadence (weekly vs every 47 months). US History Encyclopedia's advantage is rating (5.0 vs 3.5) and iOS requirement (11.0 vs 17.5). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

NerdBook is free to download; US History Encyclopedia costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

US History Encyclopedia holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 50% and 50% positive.

US History Encyclopedia ships an update every 47 months, NerdBook weekly. The most recent releases landed on October 2, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | US History Encyclopedia | NerdBook |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/us-history-encyclopedia/id1135262002/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/nerdbook/id6686394627/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 47 months | **Weekly** |
| Monetization | Paid | **Free** |
| Size | 121 MB | 2 MB |
| Requires iOS | **11.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Trang Hoai](https://appshunter.io/developer/1124304908) | [Giampiero Sierra](https://appshunter.io/developer/1768334857) |

## What reviewers say

### US History Encyclopedia

[App page](https://appshunter.io/ios/app/us-history-encyclopedia/id1135262002)

Access a comprehensive offline encyclopedia of United States history, covering government, science, culture, and more. Discover featured entries daily, create custom lists, and utilize voice search for easy navigation. Bookmark important topics for quick reference.

**Highlights:** Offline encyclopedia access, Over 17,581 entries, 5 featured entries daily, Custom list creation, Voice search functionality, Bookmark entries

**Features:** macOS Compatibility

**In-app purchases:** none


### NerdBook

[App page](https://appshunter.io/ios/app/nerdbook/id6686394627)

Discover synonyms for any context, from everyday language to creative writing. Enhance your vocabulary and find the perfect words to express yourself.

**Highlights:** Synonym discovery, Sound-alike word suggestions, Vocabulary enhancement, Creative writing aid, Lyrical and nerdy word options

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is US History Encyclopedia free?

US History Encyclopedia costs $0.99, with no in-app purchases.

### Is NerdBook free?

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

### Which has better reviews, US History Encyclopedia or NerdBook?

US History Encyclopedia is rated higher. US History Encyclopedia averages 5.0 out of 5 from 1 ratings, while NerdBook averages 3.5 from 2 ratings.

### Do US History Encyclopedia or NerdBook have ads?

Neither US History Encyclopedia nor NerdBook shows ads.

### Which is updated more often, US History Encyclopedia or NerdBook?

US History Encyclopedia ships an update every 47 months, and NerdBook weekly. Most recently, US History Encyclopedia was updated on October 2, 2026 and NerdBook on September 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.*