PennPaper

Products from the same category with overlapping descriptions or details. They are not reviewed alternatives; compare features and current plans before choosing.

Product
Screenwise: Unlock screen-time with math Learn-to-Play! - Kids unlock screen-time by learning math
Calculators.org Learn Math, Have Fun
STEM on graphs Math Learning App That Adapts to Your Level
mathpal Don't just get the answer. Understand the math.
Start With Math A math learning path that finds gaps and fixes them.
Tiger Math Tiger Math is an ad-free math learning app for kids ages 6–12, with 8 topics, story mode and offline practice on iOS, Android and macOS.
APRANOVA Learn. Build. Practice. Become Industry-Ready.
CodeToAnim Step-by-step visual code tracer for LeetCode & DSA

Selected by category and available use-case details. A topic match does not establish equivalent features.

Product
Parcourse Create courses from YouTube videos you already watch
Exposure All the opportunities you need , in one solid place
Ponderspace A space for the things you're curious about
Study Twin An AI-Based tutor for students with some extra-features.
Nagvex platform for execution and powp Learn, collaboration, creation,grow
Tiếng Anh 365 Hệ thống học tiếng Anh thông minh với AI

Added to this directory in the past 30 days. Dates refer to the directory listing, not the product launch.

Product
botguage.com Stop agent failures before they ship.
NameThatCountry.NOW Explore world country facts and geography games for kids
Engineer Atlas Find the Best Engineering Tools
Edyssey Learn any language through real AI conversation

Profiles grouped by topic. This does not confirm an offer, availability or a connection to this profile.

Profile
Wolfgang Messner Professor, Consultant, Author, Speaker
Zeb Larson Freelance writer with a PhD in history.
Thomas Taistra Venture Capital | Strategy Consulting | New York University | Harvard University

Shows and channels grouped by topic. A recommendation does not mean this profile was featured or endorsed.

Show
Well Sourced by Kelly Jensen Newsletter
Strange and Wondrous: Notes from a Science Historian Newsletter
The Strategy Files Newsletter · LaToya Allen

Retold founder accounts from startups in the same category, each linked to the original.

Story
Drip's Leadpages deal was a 13-month acquisition, not a revenue chart Rob Walling used Startups for the Rest of Us episode 298 to describe Drip's sale to Leadpages as a long strategic acquisition, and he kept purchase price and recurring revenue off the record.
Pat Flynn's first product month was $7,906.55, a year and a half after the study blog Pat Flynn says he was laid off as an architect in 2008, then sold a LEED-exam ebook into traffic he had already built; October's $7,906.55 was the first month with his own product, not the first month the site existed.
Tiago Forte scaled Building a Second Brain as live cohorts, then stopped teaching them himself A 2022 Disco case study describes Tiago Forte taking Building a Second Brain to a fifteenth cohort and thousands of learners by iterating live, then his January 2023 post says he taught 16 cohorts and would not teach the
Ship 30 for 30 started as a $50 Slack challenge, not a later AI newsletter Dickie Bush says Ship 30 for 30 began in November 2020 when he asked about 500 followers to write daily, had 50 people in Slack six days later, and later wrote with Nicolas Cole that they had taught 10,000-plus students

Subcategories in the same part of the directory, with the number of listed products.