US History Encyclopedia vs NerdBook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
US History Encyclopedia
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.
- Offline encyclopedia access
- Over 17,581 entries
- 5 featured entries daily
- Custom list creation
- Voice search functionality
- Bookmark entries
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This app provides an offline version of Encyclopedia of United States History. The Encyclopedia chronicles all the essential facts of United States history, from government and politics to science, thought and culture. Basic features include: ■ Encyclopedia - Over 17581 entries ■ Featured entries - Learn 5 entries daily with Featured entries ■ Custom List - Create a custom list - Add related entries into a same list ■ Other features: - Search for an entry using your voice - Search feature - Bookmark an entry - Easy navigation ■ If you want to suggest a new feature or report a bug, please send feedback to us. Thank you!
NerdBook
Discover synonyms for any context, from everyday language to creative writing. Enhance your vocabulary and find the perfect words to express yourself.
- Synonym discovery
- Sound-alike word suggestions
- Vocabulary enhancement
- Creative writing aid
- Lyrical and nerdy word options
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Find synonyms to fit any need. Or improve your rap flow with sound-alike words! From lyrical to nerdy, NerdBook has you covered.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | US History Encyclopedia | NerdBook |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 3.5 (2 ratings) |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 47 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.5 |
| Further details — not scored | ||
| Size | 121 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Trang Hoai | Giampiero Sierra |
Customer experience
US History Encyclopedia
NerdBook
In-app purchases
US History Encyclopedia
No in-app purchases
NerdBook
No in-app purchases
