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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Excel add-in for querying tables with SQL, scripting workbooks in C# and building custom Excel functions.

Since 2016

Free plan · Data and spreadsheets · Developers

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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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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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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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A kid-friendly front end for your own Plex library, with PIN-locked settings, rating filters and screen time limits for parents.

Since 2026

One-off payment · Family and parenting · 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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Records every AI agent decision in a signed, tamper-evident log so teams can show regulators what their AI did under the EU AI Act.

Since 2026

Free plan · Developer tools · Developers

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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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An app for learning Japanese with an AI tutor, speaking roleplays, kanji, quizzes and a personal study plan.

Since 2026

Free plan · Courses and learning · Individuals and families

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iPhone app that locks the apps you pick during hours you set ahead, allowing a few planned short opens.

Since 2026

Free plan · Focus and productivity · Individuals and families

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A language app that translates words offline, saves them to your own tagged word list and helps you review them with flashcards.

Since 2025

Courses and learning · Individuals and families

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Chore app for children 4 to 12 where jobs and routines earn points, screen time or cash, no bank account or card required.

Subscription · Family and parenting · 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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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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Turns notes, PDFs or images into flashcards you can study online, share by link or print.

Since 2025

Free · 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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Hover over Chinese text in any Mac app to see pinyin, meanings and sentence breakdowns, and save words as flashcards.

Since 2026

Free plan · Courses and learning · Individuals and families

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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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A reading app for language learners that imports books, articles and videos, translates words and sends vocabulary to Anki.

Since 2026

Free · Courses and learning · Individuals and families

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A reading and study app that lets you clip from books and papers, link the clips in mind maps and review them as cards.

Courses and learning · Individuals and families

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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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Phone app that hides Reels, Shorts and TikTok-style feeds while leaving your DMs, stories and friends' posts alone.

Since 2025

Focus and productivity · Individuals and families

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Screen time app that rewards time away from your phone with points, streaks and challenges against friends and family.

Health and habits · 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

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Helps you set an iPhone Screen Time passcode you will not remember, held behind a wait timer to curb phone use.

Since 2026

Free plan · 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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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 Mac app that logs which apps and sites you use on a timeline and can block distractions during work sessions.

Since 2025

One-off payment · Time tracking · Individuals and families