Comparison

Feynman WTF vs Sift Science

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

Head to head
About

Feynman WTF

Read full description

Finding great research shouldn’t feel like digging through an academic jungle. Feynman makes discovering cutting-edge science as easy as scrolling social media—minus the doomscrolling. Our app brings you daily research papers from arXiv, each one summarized in just 60 words. No jargon. No fluff. Just the key insights, delivered in a feed that respects your time and fuels your curiosity. Whether you're a student, researcher, or just a curious mind, Feynman helps you: Explore smarter: Browse papers across AI, physics, math, and more—handpicked and summarized by AI. Save time: Cut through academic clutter. Every summary is bite-sized and to the point. Stay sharp: Swap endless scrolling with daily doses of insight. Bookmark & personalize: Save your favorites and tailor your feed to topics you love. Built for the mobile generation. Backed by real research. Inspired by Feynman's love of clarity and curiosity. Join the club. Scroll smarter. Think deeper. Feynman is your shortcut to the best minds on arXiv—compressed for your brain. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.termsfeed.com/live/0ece6d3b-97bb-403c-a992-0ca298425796

About

Sift Science

Features
Read full description

Sift helps researchers cut through scientific information overload. Most research feeds maximize volume. Sift maximizes relevance. Create personalized science feeds tailored to your exact interests using intelligent keyword optimization and customizable filtering. Instead of scrolling through hundreds of irrelevant papers, Sift surfaces the research that matters most to you. Built for researchers who want a faster, more focused way to stay current with the scientific literature. Features Personalized Research Feeds Create custom feeds based on keywords, topics, publications, or research interests. Sift continuously filters new literature to deliver highly relevant papers directly to your feed. Keyword Lab Optimize and refine keywords before creating a feed. Test combinations, evaluate article volume, and tune your feeds to achieve the right signal-to-noise ratio for your workflow. AI-Powered Abstract Analysis Instantly understand a paper’s core findings, methods, novelty, and significance with structured abstract analysis designed for rapid scientific discovery. Full Paper Analysis Go beyond abstracts with full-paper analysis that distills complex research into clear insights, highlights key contributions, and identifies important findings across the entire paper. Explore Landmark Research Discover influential and landmark papers across a wide range of scientific disciplines through the Explore page. Bookmarks & Reading Lists Save important papers from any feed or discovery surface to revisit later. Research Alerts Stay updated as new papers matching your interests are published. Easy Feed Creation Import publications and quickly generate personalized feeds based on your existing research profile and scientific interests. Designed for Researchers Whether you are an academic researcher, clinician-scientist, graduate student, or industry professional, Sift helps you spend less time filtering papers and more time engaging with the research that matters. Subscription Information Sift requires a subscription to access app features. A 7-day free trial is available for new users. Subscription features include: Up to 5 personalized feeds Unlimited abstract analyses Up to 30 full-paper analyses Keyword Lab access Bookmarks Alerts Explore access Additional premium research tools Subscriptions automatically renew unless canceled at least 24 hours before the end of the current billing period. You can manage and cancel subscriptions in your App Store account settings. Data Sources Sift indexes publicly available scientific metadata and research information from sources including PubMed and OpenAlex. Availability of full-text content may vary depending on publisher access and licensing. By downloading this app, you agree to Apple's Standard License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Feynman WTF4 screens
Sift Science4 screens

Verdict

The call

The clearest difference is update cadence: Sift Science at every 2 days against Feynman WTF's weekly. Feynman WTF's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.6). On price, ads and in-app purchases 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. Feynman WTF sells 2 in-app purchases, starting at $10.00 per month and Sift Science sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Feynman WTF ships an update weekly, Sift Science every 2 days. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 3 level
Feynman WTF versus Sift Science: the parameters behind the verdict, then further details
ParameterFeynman WTFSift Science
PriceFreeFree
Update frequencyWeeklyEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better18.6
Further details — not scored
Size37 MB83 MB
Age rating4+4+
DeveloperVrushal KapadnisShobel LLC

In-app purchases

2 purchases

Feynman WTF

Subscriptions2
  • Pro Monthly$10.001 Month
  • Pro Yearly$99.991 Year
2 purchases

Sift Science

Subscriptions2
  • Sift Premium Monthly7 Days trial$4.991 Month
  • Sift Premium7 Days trial$39.991 Year

Questions

Is Feynman WTF free?
Feynman WTF is free to download, with in-app purchases available.
Is Sift Science free?
Sift Science is free to download, with in-app purchases available.
Do Feynman WTF or Sift Science have ads?
Neither Feynman WTF nor Sift Science shows ads.
Which is updated more often, Feynman WTF or Sift Science?
Feynman WTF ships an update weekly, and Sift Science every 2 days. Most recently, Feynman WTF was updated on October 24, 2026 and Sift Science on October 8, 2026.

Other comparisons