Comparison

Knowt vs TheRareLens

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Knowt

This app uses AI to transform your study materials into flashcards and practice tests. It offers efficient note-taking and a spaced repetition system to help you master subjects and prepare for exams.

Highlights
  • AI flashcard creation
  • Note summarization
  • Practice test generation
  • Spaced repetition
  • Free Learn Mode
  • AP exam study guides
Features
Read full description

Discover a new way to study with Knowt, the all-in-one study app trusted by 7 million students. On top of being the #1 Flashcard App with Free Learn mode, Knowt also has unique AI features designed to save you time when studying. With one click, turn your notes into flashcards, or ask our AI to summarize your lecture videos and whip up flashcards on the key info for you. Knowt creates practice tests from any note, pdf, or video to help you prepare for exams. We offer a more efficient way to study, join us and take your learning to the next level with Knowt. What can you do on Knowt? Make flashcards sets: Use our AI flashcard maker to create your own set or grab some from popular sites like Quizlet. Turn your notes into flashcards and practice : Upload your notes and let our AI makes flashcards and practice tests to help you learn the material better. Study with Free Learn Mode : Master your flashcards with unlimited rounds of learn mode or one of our other study modes (Practice Test, Match, Spaced Repetition) Efficient note-taking: Use our AI note-taking feature to take notes faster Spaced Repetition : Nail your tests with our scientifically proven algorithm that helps you remember your flashcards longer Free AP Study Guides : Check out the Exams Tab for free AP exam study guides, flashcards, and practice tests. (We're adding more exams soon!) Explore Free Learning Resources: Choose from millions of digital flashcard sets, class notes, study guides, and pdfs on a wide range of subjects, all created by fellow students. Seamless Sync: All your stuff syncs between the mobile app and website, making it easy to pick up where you left off, regardless of the device you're using. --------- Download the new Knowt App today and take your notes & flashcards wherever you go. Improve your grades and unleash the power of AI to learn better & faster. Terms of Service : https://knowt.com/terms Privacy Policy : https://knowt.com/privacy --------------------------- Join the Knowt Community! Discord: https://knowt.com/discord TikTok: https://www.tiktok.com/@getknowt Instagram: https://www.instagram.com/getknowt --------------------------- We are committed to protecting your personal information and your right to privacy. If you have any questions or concerns about our practices with regard to your personal information, please contact us at contact@knowt.com

About

TheRareLens

Features
Read full description

RareLens: Research Equity for Rare Diseases The Problem Over 7,000 rare and autoimmune diseases exist but fewer than 5% have an approved treatment. Research funding from the NIH often doesn't reflect how many people a disease affects or how severely it impacts their lives. Patients wait years for a diagnosis. Researchers don't know where the biggest gaps are. Advocates don't have the data to make their case. RareLens changes that. Who It's For — Patients and caregivers who want to understand where their disease stands in the research landscape — Scientists and clinicians looking for high-impact, underserved areas to direct their work — Patient advocates building the case for more funding — Students and researchers exploring rare disease epidemiology and health equity How It Works RareLens pulls live data from NIH Reporter, PubMed, and ClinicalTrials.gov to score every disease across two dimensions: • Research Score: how much NIH funding and published science exists for a disease • Patient Burden Score: how prevalent the disease is and how severely it affects quality of life The difference between the two is the Gap Score a single number that tells you exactly how underfunded a disease is relative to the burden it places on patients. Features — Live gap scores and funding trends for rare and autoimmune diseases — Disease profiles with NIH funding history, active clinical trials, and recent publications — Year-over-year funding change tracker to catch emerging shifts in research investment — Bookmark and track the diseases that matter to you — Search any disease, even one not in our catalog and get a full score within seconds The Science Behind It Every score is formula-based, sourced from public government data, and fully reproducible. RareLens was built on a peer-reviewed methodology grounded in NIH Reporter, Orphanet prevalence data, and the Global Burden of Disease Study 2021. This is not a curated list. This is a live, data-driven map of where science is and isn't showing up for patients.

Screenshots

Knowt4 screens
TheRareLens4 screens

Verdict

The call

The clearest difference is in-app purchases: TheRareLens at none against Knowt's 10. Knowt's advantage is chart position (#36 vs unranked). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Knowt sells 9 in-app purchases, starting at $9.99 per 7 days. TheRareLens asks for nothing beyond the download.

Scorecard2 real differences · 9 level
Knowt versus TheRareLens: the parameters behind the verdict, then further details
ParameterKnowtTheRareLens
PriceFreeFree
Rating4.7 (11K ratings) — better—
Positive reviews61.7% of reviews—
Number of ratings11K — better—
Update frequencyWeekly—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
Best chart rank#36 — better—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.415.1 — better
Further details — not scored
Size150 MB42 MB
Age rating4+4+
DeveloperKnowt Inc.Aditi Kishore

Bugs and requests

Knowt

Reported bugs

4 issues
  • Flashcards disappearing or duplicating
  • Incorrect answers marked as correct
  • Freezing on update screen
  • Compatibility issues on certain devices

Requested features

6 requests
  • Split screen support for iPad
  • Ability to manually sort flashcards
  • More formatting options for flashcards
  • Improved AI-generated notes
  • Offline study mode
Show 1 more
  • Customizable audio/visual feedback

TheRareLens

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

Knowt

Subscriptions9
  • Student Ultra Weekly$9.997 Days
  • Student Ultra Monthly3 Days trial$14.991 Month
  • Student Ultra Monthly3 Days trial$19.991 Month
Show 6 more
  • Student Ultra Monthly$24.991 Month
  • Student Ultra Annual$59.991 Year
  • Student Ultra Annual$95.991 Year
  • Student Ultra Annual3 Days trial2 variants$119.991 Year
  • Student Ultra Annual7 Days trial$119.991 Year
  • Student ultra annual3 Days trial$149.991 Year
None

TheRareLens

No in-app purchases

Questions

Is Knowt free?
Knowt is free to download, with in-app purchases available.
Is TheRareLens free?
TheRareLens is free to download, with no in-app purchases.
Do Knowt or TheRareLens have ads?
Neither Knowt nor TheRareLens shows ads.

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