No moat. Still in business.

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Make your own flashcard decks and review them on a spaced repetition schedule in the browser.

Since 2015

Free plan · Courses and learning · Individuals and families

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Desktop data analysis app where you ask about your data in plain English and get Python code, charts and notebooks run on your computer.

Since 2017

Data and spreadsheets

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Adds pauses, daily limits and schedules to distracting apps and websites so people scroll less, paid for by donations.

Free · Focus and productivity · Individuals and families

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Keeps chosen iPhone apps locked until you reach a daily step, push-up or workout goal.

Since 2024

Free plan · Health and habits · Individuals and families

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Mac screen recorder and editor for product demos and tutorials, with auto zoom, captions and AI voiceovers.

Free plan · Video and audio · Creators and writers

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Records which apps and websites you use on your computer or phone so you can see where your time goes, stored locally.

Free · Time tracking · Individuals and families

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Lets developers share live progress of scripts and jobs through a link, via an API or a tqdm replacement.

Uptime and monitoring · Developers

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Parents paste approved YouTube links into a separate shelf for each child, with no search or recommended feed.

Since 2026

Free · Family and parenting · Individuals and families

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A note app for desktop and phone that records and transcribes, then answers questions using your own notes.

Since 2026

Notes and knowledge · Individuals and families

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Runs versioned SQL and Python database migrations with dry runs, history checks and rollbacks, for Python teams.

Since 2026

Free plan · Developer tools · Developers

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Gets and renews free Let's Encrypt SSL certificates on cPanel shared hosting without command line work.

Free plan · Security and passwords

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Point any domain at any URL with automatic HTTPS, path rules and hit analytics, no server to run.

Free plan · Website builders

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An iPhone app that takes Japanese learners from beginner to fluent with one new sentence per flashcard and spaced review.

Since 2015

Courses and learning · Individuals and families

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Note app for students that builds flashcards, quizzes and summaries from notes and PDFs with spaced repetition.

Since 2021

Free plan · Courses and learning · Individuals and families

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A browser extension that saves and highlights words you look up on web pages, then drills them with flashcards.

Since 2020

Free plan · Courses and learning · Individuals and families

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A study app for students with spaced repetition flashcards, made from notes and PDFs, and scheduled around your calendar.

Free plan · Courses and learning · Individuals and families

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Blocks distracting apps and sites on iPhone, iPad and Mac with schedules, daily limits and synced rules.

Since 2024

Focus and productivity · Individuals and families

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Spreadsheet that links to databases and files and lets AI write the formulas, Python and charts for you.

Since 2023

Data and spreadsheets

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Flashcard app for iPad and iPhone where students draw, type or add images to cards and review them with spaced repetition.

Since 2024

Courses and learning · Individuals and families

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Locks your phone, apps or accounts until a set time, then sends the unlock code so you cannot give in early.

Since 2024

Free plan · Focus and productivity · Individuals and families

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Students turn class notes or a PDF into a practice test that marks itself and explains each question they got wrong.

Since 2024

Free plan · Courses and learning · Individuals and families

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Flashcard app that uses spaced repetition so learners review hard cards more often, with sync between devices.

Courses and learning · Individuals and families

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Helps students sort courses, tasks, class schedules, flashcards and files into colour-coded folders.

Free · Focus and productivity · Individuals and families

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Flashcard maker that schedules reviews by spaced repetition, with dictionaries and text to speech for language learners.

Since 2024

Free plan · Courses and learning · Individuals and families

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Stops you opening distracting apps, sites and keywords on phone and browser, with profiles set by time, place or Wi-Fi.

Free plan · Focus and productivity · Individuals and families

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A Mac app that blocks social and video sites during the work hours you set, across every browser.

Since 2024

One-off payment · Focus and productivity · Individuals and families

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Blocks chosen apps on a schedule or timer and scores daily phone habits to help people cut screen time.

Subscription · Focus and productivity · Individuals and families

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Puts a short pause in front of social media apps and sites so people open them less and cut their screen time.

Focus and productivity · Individuals and families

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A private mood journal for iPhone and Mac that logs gratitude, sleep and screen time in a couple of minutes a day.

Since 2026

Health and habits · Individuals and families

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Android and iOS app that asks you to finish a small task, like a quick sum, before opening apps you spend too much time on.

Since 2026

One-off payment · Focus and productivity · Individuals and families

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An iPhone browser for Instagram, TikTok, YouTube and others that hides reels and suggested feeds but keeps messages.

Since 2026

Focus and productivity · Individuals and families

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Learn Japanese or Korean by tapping words in YouTube videos, manga and books, with flashcards that track what you know.

Since 2025

Free plan · Courses and learning · Individuals and families

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Learn English words from books you are reading, with ready-made flashcards, quizzes and a word bank.

Since 2025

Free plan · Courses and learning · Individuals and families

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iPhone home screen widgets that list your chosen apps as plain words, so the phone feels closer to a dumb phone.

Free plan · Focus and productivity · Individuals and families

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Reads your Anki flashcards aloud through headphones and grades your spoken answers, with an AI tutor for follow-up questions.

Since 2026

Free plan · Courses and learning · Individuals and families

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Turns PDFs and notes into flashcards you can review and edit, then export to Anki, Mochi or SuperMemo.

Since 2026

Subscription · Courses and learning · Individuals and families

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Fixes the mixed content and insecure content warnings a WordPress site shows after it moves to HTTPS.

Website builders

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iPhone launcher that trims your home screen to the apps you need and puts small tasks in front of the addictive ones.

Focus and productivity · Individuals and families

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An iPhone app that locks distracting apps until you tap an NFC tag or scan a QR code you keep somewhere else.

Since 2025

Free · Focus and productivity · Individuals and families

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A phone app that sets time limits on social apps and gets in your way once your time runs out, to curb doomscrolling.

Since 2025

Free · Health and habits · Individuals and families

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Save new words from what you read or watch, get AI definitions and examples, then review them with FSRS flashcards on Apple devices.

Since 2025

Free plan · Courses and learning · Individuals and families

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A language app where a partner or friend fills in words, audio and sentences for you to study, on iPhone and Android.

Since 2025

Courses and learning · Individuals and families

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Pools GPUs and CPUs from many cloud providers and your own servers so developers can run large data jobs in one place.

Since 2026

Developer tools · Developers

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A flashcard app that makes study cards from your PDFs, articles and photos and schedules reviews so you remember them.

Since 2026

Free plan · Courses and learning · Individuals and families

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Students upload slides or notes and get practice quizzes and spaced-repetition flashcards made from them.

Since 2025

Free plan · Courses and learning · Individuals and families

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Turns a screen recording into a guide people click through step by step, which you can embed on a site or share as a link.

Since 2026

Free plan · Customer support · Software companies

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Paste a YouTube link or upload a transcript and get an Anki flashcard deck made by AI, ready to import.

Since 2025

Free plan · Courses and learning · Individuals and families

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Chrome and Firefox extension that turns pages grey on a schedule, with site exceptions, to curb doomscrolling.

Since 2025

Free · Focus and productivity · Individuals and families