Field Guide: Micro Lessons
The stuff worth knowing
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Most facts go in one ear and out the other. Field Guide is built so they don't.
Each lesson takes two or three minutes and follows a simple loop proven to build memory: you predict an answer first, you get taught one clear idea, then you're quizzed on it. Guessing before you learn is the trick that makes it stick.
Then spaced review brings each lesson back days later, right before you'd forget, so it moves into long-term memory instead of fading by tomorrow.
WHAT'S INSIDE
Hundreds of lessons across science, history, money, health, art, engineering and more
A predict → teach → check loop that's actually fun
Spaced review that schedules itself
A streak to keep you honest
Clean, calm, no-fluff design. No ads, no clutter.
Browse by subject, get a fresh lesson each day, or hit Random and learn something new right now.
Field Guide works fully offline, and new lessons arrive automatically.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Choose your level — every lesson now comes in High School, College, and PhD versions. Plus a cleaner way to browse by subject.
The developer, 4fives Entertainment, LLC, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 4fives Entertainment, LLC
- Size
- 9.5 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 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+
- Copyright
- © 2026 4fives Entertainment, LLC