Factopus: short lessons on 29 topics, taught by an octopus

Try one right now

Most people get this one wrong

Tap the card for the answer. Fair warning: you will repeat this one to someone today.

Fact of the day · Biology

An octopus has three hearts — and one of them stops beating at a very specific moment. When?

Tap to reveal

Answer

When it swims. The heart that pumps blood to the body quits and only the two gill hearts keep going, which is why an octopus crawls whenever it has the choice. Swimming exhausts it.

The Fact Feed is a whole screen of these, one swipe apart.

What's inside

Six things that make the five minutes work

No 12-week course to abandon in week two. One lesson, one quiz, and Facto handing you the next thing with whichever arm is free.

Never longer than 15 minutes

Long enough to teach one thing properly, short enough to finish on the train. Every lesson has an ending.

1,400+ lessons in the catalog,
5 to 15 minutes each

29 topics, one app

History, Psychology, Finance, Physics, Relationships, Art, and 23 more. Switch your mix whenever you want.

The Fact Feed

Swipeable cards, one fact each. The same thumb motion as the app you're trying to use less.

Quick quizzes

A few questions at the end of each lesson. Nothing is graded and nothing is shared. Getting one wrong is the part that sticks.

Streaks that stick

One reminder a day, a goal you set yourself, and an octopus that high-fives you with three arms at once. Miss a day and nothing bad happens.

Badges & deep dives

Finish a topic and its next level opens, with a badge to show for the work. The badges are more motivating than they have any right to be.

How it works

Three steps, then it runs itself

1

Pick your topics

Pick from 29: History, Finance, Psychology, Astronomy, and the rest. Change the mix whenever you want.

2

Learn in 5–15 minutes

One lesson a day, with worked examples and a short quiz at the end.

3

Keep going

The app remembers where you stopped and starts there tomorrow. A month in, that's about 30 lessons behind you.

Topics

Yes, dog training is in there

29 topics today, and the list keeps growing.

History Relationships Geography Physics Psychology Art Finance Biology History Relationships Geography Physics Psychology Art Finance Biology

Communication Literature Nutrition & Health Astronomy Cinema Music Chemistry Dog Training Communication Literature Nutrition & Health Astronomy Cinema Music Chemistry Dog Training

Inside the app

This is the whole app

Lessons, the Fact Feed, and your progress. That's all of it.

Factopus — a lesson screen with a worked example

Factopus — the daily progress screen with Facto

Factopus — global topics, short lessons, quizzes and the fact feed

Why Factopus

What we do differently

Most learning apps feel like homework you assigned yourself. This one is closer to the part of your phone you open without thinking.

	Factopus	Other apps
Lesson length	✓5–15 min, always	✗Often 30+ min chapters
Breadth	✓29 topics in one app	✗Usually one subject
Fact Feed	✓Scroll that teaches	✗Rarely offered
Ads	✓Zero, ever	✗Varies
Habit design	✓Gentle streaks & goals	✗Streak pressure
Personality	✓A witty octopus	✗Stock illustrations

Questions

Before you download

It will be free to start: you download it and read without paying anything. Factopus Pro opens the full catalog, unlimited quizzes, and detailed progress stats. The price and any trial terms are shown in the app before you confirm anything.

5 to 15 minutes. Nothing in the catalog runs longer: if a topic needs more room, it gets split into two lessons.

Every lesson is written from published sources, checked before it ships, and ends with a quiz. If a sentence doesn't teach anything, it gets cut.

In about 20 seconds, directly with Apple or Google: on iPhone — Settings → your name → Subscriptions → Factopus → Cancel. On Android — Play Store → profile → Payments & subscriptions → Subscriptions → Factopus → Cancel. You keep access until the end of the paid period.

Like all App Store and Google Play subscriptions, Factopus Pro renews automatically unless you cancel at least 24 hours before the period ends. The renewal price and date are always visible in your store account settings.

No. No sign-up, no password, no sign-in with Apple or Google — you open the app and start reading. The trade-off: your progress lives on that device, so it won't follow you to a new phone.

There's no account, so there's no email, name, or password to leak. Your topics and progress sit on your device and under an anonymous identifier on our servers, and one tap in Settings erases all of it. No ads, no analytics SDKs, no tracking, and we never sell data. Payments go through Apple and Google, so your card details never reach us. Full details in our Privacy Policy.

It is made for readers of 13 and up, and it will ship with a 13+ age rating. The tone is playful, but topics like finance, psychology, and history are written for teenagers and adults.

iPhone (iOS 16+) and Android (8.0+).

Facto has eight arms
and nothing to do

Free to start when it lands. Pick a topic, tap one card, and decide for yourself whether five minutes a day is worth it.

Launching soon on the App Store and Google Play.

Free to try. Factopus Pro subscriptions are managed through your App Store or Google Play account — exact pricing and any free-trial terms are shown in the app, in your local currency, before you confirm anything. Cancel anytime. See our Terms and Privacy Policy.