51+ iOS apps & games curated and reviewed
The best unnecessary knowledge apps and games on iPhone average 4.5★ across 51+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $0.99 | 3.7★ (7) | No | No | Jul 2026 |
| 2 |  | Free | 4.8★ (6) | Yes | Yes | May 2026 |
| 3 |  | Free | 5.0★ (1) | No | Yes | Jul 2026 |
| 4 |  | Free | 4.7★ (47) | Yes | Yes | Jul 2026 |
| 5 |  | Free | 4.9★ (31) | No | Yes | Jul 2026 |
| 6 |  | Free | 5.0★ (1) | No | Yes | May 2026 |
| 7 |  | Free | 4.3★ (10) | No | Yes | Jul 2026 |
| 8 |  | Free | — | Yes | Yes | Jul 2026 |
Discover thousands of fascinating and often surprising facts across 18 diverse categories. Save your favorites and learn trivia that has even appeared on popular game shows. Expand your general knowledge with this engaging educational app.
Discover a vast collection of over 2,100 intriguing and often amusing facts across 18 diverse categories. Learn about everything from internet passwords to medical terms and historical trivia. Save your favorite facts for easy access.
Create and explore a personalized encyclopedia with custom entries on any topic. Discover new information through a unique random exploration module, expanding your knowledge base and satisfying curiosity.
This reading and learning app uses extremely short, fragmented content to help users quickly gain knowledge across all industries. Its unique no-category, random reading mode encourages exploration beyond familiar topics, breaking cognitive barriers and enriching conversation. Content is refined for easy understanding and practical application.
This app transforms your curiosity into bite-sized learning experiences. Get instant micro-courses on any topic, complete with visuals and summaries. Learn something new in just a few minutes, perfect for busy schedules.
This AI-powered learning companion helps you capture, summarize, and retain important ideas. It uses smart review intervals to ensure knowledge sticks, fostering deeper understanding for lifelong learners. Turn consumed information into lasting comprehension.
Explore the vast knowledge of Wikipedia directly through a dedicated application. Search for articles, learn new things daily, and access unbiased information curated by a global community. It serves as an excellent educational companion for seeking truth and expanding understanding.
This app delivers concise, practical knowledge across various topics in an engaging format. It allows users to read, debate, comment, and search for information, making learning feel light and addictive. Users can build and share their own knowledge libraries, with fresh content updated multiple times daily.
Discover a new interesting fact daily with verifiable references. This app delivers curated educational content to expand your knowledge base every 24 hours.
Discover over 2,000 bizarre, funny, and utterly absurd facts and trivia. Scroll through an endless feed of pointless knowledge, random wisdom, and quirky insights perfect for quick entertainment during breaks or commutes.
An incremental game where your character learns facts, conducts research, and boosts their IQ. Progress continues even when offline, offering hundreds of upgrades and a prestige system. Discover over 700 real-world facts across eight subjects.
This app helps you retain information by periodically sending you notifications of facts you've saved. It's designed to combat forgetting and improve general knowledge through spaced repetition.
Discover surprising facts and explore bite-sized details offline. Create and organize personal photo cards in a sleek gallery. This app offers a unique way to learn and document your discoveries.
This app transforms idle moments into learning opportunities with AI-generated knowledge cards. Its swipe-to-learn interface makes acquiring new insights effortless and personalized, building a personal vault of saved facts.
This app is a gamified platform for sharing information, aggregating news, videos, and opinions from diverse sources. It aims to foster the free exchange of knowledge.