Imprint: Learn Visually 12+

Read faster. Remember more‪.‬

Polywise, Inc.

    • Free
    • Offers In-App Purchases



Imprint (formerly Lucid) is your visual guide to the world's most important knowledge.

- Master essential topics in psychology, philosophy, history, finance, leadership, business, health, science, technology and more.

- Understand complex concepts quickly, with elegant visuals that clarify key ideas and help you stay focused.

- Take challenging daily quizzes that help you retain what you've learned.

- Save and review the insights and visuals that matter most to you.

- Complete a chapter in two minutes or less, in bite-sized sessions throughout your day.

- Explore our rapidly expanding catalog, featuring:

- Philosophy and the Meaning Life with Professor John Kaag
- Bitcoin and Blockchains
- Becoming a UX Designer
- The History of the United States Government

- The Freudian Mind: Id, Ego, Superego
- mRNA Vaccines and the Future of Immunity
- The Imprint Guide to Gerrymandering

- Sapiens by Yuval Noah Harari
- Atomic Habits by James Clear
- The Beginner's Guide to the Stock Market by Matthew Kratter

...and much more!



Imprint offers an auto-renewing yearly subscription and an auto-renewing monthly subscription which allows you full access to all of the content in our catalog for as long as you maintain an active subscription.

These prices are for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on your country.

Payment will be charged to the credit card connected to your iTunes account at the time of initial subscription purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. Your account will be charged for renewal within 24 hours prior to the end of the current period end date, and the cost of the renewal will be listed. You can manage your subscription and auto-renewal can be turned off by going to your Account Settings after the purchase.

Read more about our Privacy Policy here:

Read more about our Terms of Service here:

What’s New

Version 4.1.2

Bug fixes and performance improvements

Ratings and Reviews

4.8 out of 5
21.5K Ratings

21.5K Ratings

piclifeonisland ,

I find myself craving time with this app

I’ve always laughed at the “I never write reviews, but…” reviews. Well here’s karma, because it’s my turn. I don’t write many reviews (at all) but I am so happy with Lucid that I had to. The content is first-rate, the visuals and storyboarding work well for my ADHD self, the format is intuitive, the layout clean, the quizzes incredibly helpful, and like one review said… this has replaced my doom-scrolling of social media with valuable learning and growth. I crave this app. And I love it’s iPad friendly, too… makes reading so much more enjoyable. Side note: help is fantastic… I reached out over synching issues and the response was A+ from a genuinely helpful and concerned team. This is a great way to get the key concepts from the most relevant titles of our time… and if one really hits a home-run with you… it’s quite the test drive before you buy the full book. I can’t begin to count how many apps I delete after the trial period, so this is out of my norm… my trial period is up tomorrow… and I’m all-in for the full version. Test Lucid and really dive in… you’ll be glad you did.

Musicus1685 ,

frustrating screen orientation on iPad

I absolutely love what this app does but I can’t believe that in 2023 you can’t allow the screen to reorient on the ipad, which means it’s for iPhone and not for iPad. Many of us do our reading on our iPad but because the app doesn’t allow the screen to re-orient when I use my iPad in the horizontal position like a laptop (which is 100 percent of the time), I have to hold my iPad vertically or prop it up. I find myself deciding not to do my imprint readings at coffee shops, etc. because this is extremely awkward and the iPad gets quite heavy if I have to hold it that way for long and impossible if I’m juggling coffee, etc.

When you make the next update, can’t you please add a genuine ipad version so that I can use it? Seriously, on most iOS development apps, this is literally accomplished by clicking on a checkbox before compiling. As I say, I love the app but if you can’t put out an iPad friendly version then I am going to end my subscription once the freebie week is over. Once that happens, I won’t be back as there are other more iPad friendly options out there. I really would like Imprint the best if it weren’t for this limitation that is basically developer imposed.

nj kim ,

Help Perspective

I'm not a social media junkie but in todays world yes we need some of the technologies to do our jobs keep up with loved ones etc. But the simple fact is it was called the Boob tube as far back as I can remember! Now we have a Boobtube on our wrists on our computers we literally have these walking talking devices that can go everywhere. We rob ourselves of the simple things n life like nature, being in it, listening to the birds. This is a perfect way to learn different interests and get something back from your time on whatever device your on. I always have said that education is our most powerful tool, any day I can learn something new even a new word of the day is a good day! Being a nurse I know the capabilities our brains can accomplish and it's so far more powerful but we don't even use a fraction of it. I say well if God gave it to me I should use it like it's any other part of my body, stretch it expand it this app does just that !

App Privacy

The developer, Polywise, Inc., 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 Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Purchases
  • Identifiers
  • Usage Data

Data Linked to You

The following data may be collected and linked to your identity:

  • Purchases
  • Contact Info
  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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