Jnaana: Sharpen your mind
Quiz, Riddle, Chess, Sudoku
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Jnaana — Knowledge, Sharpened.
"Jnaana" means knowledge and wisdom. It's also the name of the app that turns everything you know, everything you're about to learn, and every puzzle you can't resist into one place worth opening daily.
This isn't trivia for killing five minutes on the bus. Jnaana is built for people who actually like being right — and for people who like a good mental workout: 2,000+ quiz questions across Geography, History, Science, Technology, Sports, Finance, Literature, and Entertainment, skewed toward medium-difficulty questions that make you think, not guess. Alongside that: read-aloud riddles for family time, 5,000 real chess checkmate puzzles, and quick 6×6 sudoku grids.
Features:
Quiz — pick one or more categories, start a quick round of 5 to 20 questions
Get an explanation the moment you answer
Riddle Time — read riddles aloud with your kid, no score, no timer, just fun
Chess Puzzle — find checkmate in one move, from 5,000 real game positions
Sudoku — quick 6×6 grids across easy, medium, and hard
Share your results on WhatsApp to brag
Challenge friends live, 1:1 — in quiz, chess, or sudoku
Track your progress and streaks across every mode
Unlock medals as you go
Support Jnaana with an optional tips.
The developer, Sadananda Kamath, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Contact Info
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Sadananda Kamath
- Size
- 51.9 MB
- Category
- Trivia
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Infrequent
Contests
- In-App Purchases
Yes
- Tip: big thanks $3.99
- Tip: a meal $1.99
- Tip: a coffee $0.99
- Copyright
- © 2026 Jnaana. Sharpen your mind, one quiz at a time.