# Encyclopedia of Plagues — Epidemics, history & science > Offline encyclopedia of plagues with articles, photos, and badges. (iPhone/iPad app by Good Spider, LLC.) - Source: https://appshunter.io/ios/app/encyclopedia-of-plagues/id1126982392 (this page in markdown: same URL + `.md`) - Developer: [Good Spider, LLC](https://appshunter.io/developer/1487595667) - Category: Education, Books - Price: Free with in-app purchases - Rating: 4.20/5 from 5 App Store ratings · 2 written reviews indexed - Age rating: 17+ - Requires: iOS 15.0 · 71 MB - Languages: American English - Released: 2016-09-02 - Data updated: 2026-10-09 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/encyclopedia-of-plagues/id1126982392/reviews.md ## What is Encyclopedia of Plagues? Study the history and science of epidemics and pandemics. This educational reference includes disease, death and historical accounts; it is not medical advice. 126 illustrated reference articles. CHOOSE YOUR FREE READING New readers choose five distinct articles from the library. Chosen articles stay unlocked and can be revisited without spending another choice. Existing readers keep their previous allowance, and eligible earlier purchases remain protected. EXPLORE AND RETURN Search article titles and full text. Discover connections through maps, timelines and graphs where the collection has relevant information. Save articles and return to recent reading or your last reading position. Optional reminders help you return to the library. OFFLINE ENCYCLOPEDIA One-time ownership unlocks the full encyclopedia for offline reading. Eligible historical purchases can be restored from Restore Purchases in Settings or on the upgrade screen. PREMIUM AI Premium includes full offline access and AI chat about this encyclopedia’s subject. Chat requires internet access. Monthly and annual subscriptions offer a three-day introductory trial for eligible new subscribers. Prices and billing periods appear on the purchase screen. Subscriptions renew automatically unless canceled through your App Store account; trials are subject to Apple eligibility. SOURCES AND SUPPORT Reference text and images are drawn from licensed sources including Wikipedia and Wikimedia Commons. Source, author and license credits are available in the app. AI answers can be wrong and should be checked against the referenced articles. Privacy Policy: https://goodspider.net/privacy-policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://goodspider.net/support/ ## Key features - Extensive plague articles - High-definition photos - Offline access - Badge collection system - User-friendly interface - Suitable for all ages ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Full Version | $2.99 | one-time | ## Is Encyclopedia of Plagues safe? Not enough ratings yet to assess Encyclopedia of Plagues. ## Is Encyclopedia of Plagues legit? Encyclopedia of Plagues appears to be a legitimate app. The AppsHunter Legitimacy Score for Encyclopedia of Plagues is 90 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/encyclopedia-of-plagues/id1126982392/reviews.md ### 1/5 — Makes you pay. *2026-10-04* Makes you pay for free information. Just google “Every plague” ### 5/5 — Lots of pandemics, lots of fun reading *2020-04-27* A whole lot of information, a whole lot of plagues. Gives you recent upfront with the free version, and the Black Death, the historical are on the paid version. Pretty much every thing you need to know about plagues. ## Frequently asked questions about Encyclopedia of Plagues ### What is CHI Encyclopedia of Plagues? CHI Encyclopedia of Plagues is an educational app that provides a comprehensive collection of articles and high-definition photos about various plagues throughout history. It is designed to be informative and engaging for users of all ages. ### Can I use CHI Encyclopedia of Plagues offline? Yes, the entire encyclopedia is available offline. This means you can access all articles and photos without an internet connection, making it perfect for use on planes, in cars, or anywhere without Wi-Fi. ### What kind of content does CHI Encyclopedia of Plagues offer? The app offers thousands of hours of articles and beautiful HD photos covering plagues from A-Z, including historical events like the Antonine Plague and diseases like the Zika Virus. The content is organized neatly and written to be easily understood. ### Does CHI Encyclopedia of Plagues have ads? No, CHI Encyclopedia of Plagues does not contain advertisements. The app is free to download and use, with optional in-app purchases. ### How does CHI Encyclopedia of Plagues help users learn? It motivates users to read more by offering a badge collection system. Users can earn badges for reading different articles or collections of articles, gamifying the learning process. ### What devices is CHI Encyclopedia of Plagues available on? CHI Encyclopedia of Plagues is designed to look stunning on both iPhone and iPad. It is also supported on iPod devices. ### How often is CHI Encyclopedia of Plagues updated? The app was last updated on September 2, 2016, to version 1.0.2. Further updates would typically involve adding new content or improving existing features. ### What is the age rating for CHI Encyclopedia of Plagues? CHI Encyclopedia of Plagues has an age rating of 4+. This indicates that the content is considered appropriate for children aged four and older, making it a suitable educational tool for younger learners. ## Version history (last 2 releases) ### 26.10.3 — 2026-10-06 More reliable upgrade options when prices are slow to load or temporarily unavailable. Clearer retry and purchase feedback, with easier recovery when returning to the app. Your chosen articles and eligible purchases remain protected. ### 1.0.2 — 2016-09-02 This app has been updated by Apple to display the Apple Watch app icon. ## Apps similar to Encyclopedia of Plagues | App | Rating | Price | Category | | --- | --- | --- | --- | | [Kids Encyclopedia with AI](https://appshunter.io/ios/app/kids-encyclopedia-with-ai/id1502045040) | — | Free | Education | | [Nabulsi Encyclopedia](https://appshunter.io/ios/app/nabulsi-encyclopedia/id1451629400) | 4.8 (42) | Free | Education | | [Animapedia: Extinct Animals](https://appshunter.io/ios/app/animapedia-extinct-animals/id6746680653) | 4.8 (25) | Free | Education | | [Dog Breed Scanner — DogPedia](https://appshunter.io/ios/app/dog-breed-scanner-dogpedia/id1498410213) | 4.6 (120) | Free | Education | | [Greek Mythology - Gods & Myths](https://appshunter.io/ios/app/greek-mythology-gods-and-myths/id1064411231) | 4.3 (77) | Free | Education | ## More apps by Good Spider, LLC - [Airliners Encyclopedia](https://appshunter.io/ios/app/airliners-encyclopedia/id1036268445) - [Encyclopedia of Animals](https://appshunter.io/ios/app/encyclopedia-of-animals/id1082571138) - [Music Guide & Encyclopedia](https://appshunter.io/ios/app/music-guide-and-encyclopedia/id1122036466) - [Encyclopedia of Cats](https://appshunter.io/ios/app/encyclopedia-of-cats/id1122519824) - [Encyclopedia of Dogs](https://appshunter.io/ios/app/encyclopedia-of-dogs/id1122543308) - [Encyclopedia: Greek Mythology](https://appshunter.io/ios/app/encyclopedia-greek-mythology/id1122556787) All apps by Good Spider, LLC: https://appshunter.io/developer/1487595667 ## Related topics [epidemic](https://appshunter.io/ios/topics/epidemic) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-09.*