Faultory
In-depth reviewFaultory provides interactive, evidence-based investigations into real events, engineering failures, scientific discoveries, and historic systems. Users can examine evidence, think through causes, and explore case files covering topics like the Tacoma Narrows Bridge, discovery of pulsars, and Apollo 13, all saved directly in the browser.

Faultory, as it opens in a browser tab.
Not sure how to add Faultory to your home screen? Step-by-step for Chrome, Safari, Firefox and Edge — it takes about ten seconds, and there is no app store involved.
Own Faultory? Have us re-run this measurement — we open it in a real browser, wait for the service worker, and send you what it cached.
How to install Faultory as a PWA
Screenshots
Why we recommend Faultory
Faultory stands out as an exceptional tool for critical thinking and learning, offering 'playable, sourced investigations' that encourage users to 'examine the evidence and think through the causes.' Unlike passive reading, it presents 'real events' with 'competing explanations' and allows users to load 'records' to 'watch the recorder write its signature.' The depth of content is impressive, with '84 open investigations' covering diverse topics from the 'Tacoma Narrows Bridge' to the 'Discovery of pulsars.' Its commitment to an ad-free experience with 'no account' required and progress saved 'in your browser' prioritizes user experience and focus on the material. The integration of 'real photographs' and 'illustrative signatures' further enhances the immersive and educational value.
Best use cases
Best for: individuals interested in developing critical thinking skills by dissecting complex real-world events. Students and lifelong learners seeking engaging, interactive content on engineering failures, scientific breakthroughs, or historical systems. Educators looking for supplementary materials that promote active learning and evidence-based reasoning. Anyone who wants to 'Investigate why' rather than just read what happened, with progress saved locally without needing an account.
Honest limitations
Faultory is not designed for collaborative work or real-time data analysis. While it offers printable worksheets for 'The Investigator’s Field Kit' (available on Gumroad), the core interactive investigations are experienced individually. It is also not suitable for those looking for a traditional textbook or a platform for generating their own investigations directly within the app, as its focus is on curated, pre-existing case files. Offline access is not explicitly supported by the provided information.
Are you the maker of Faultory? Claim this listing →
Is Faultory yours? Add the “Listed on” badge
Optional, and it changes nothing about the listing. Paste it in your README or your site’s footer.
[](https://pwa.directory/directory/faultory)
<a href="https://pwa.directory/directory/faultory"><img src="https://pwa.directory/badge.svg" alt="Listed on pwa.directory" width="167" height="20"></a>
Similar to Faultory
Learn math, science, and CS through interactive problem-solving. Beautiful visualizations for concepts from probability to neural networks. A thinking-first learning platform. Courses build from one idea to the next rather than from lectures, so progress depends on solving rather than watching.

An interactive periodic table of the elements presented as a clean web app. Users can explore the elements in a simple visual layout, making it a quick reference for chemistry students, teachers, and anyone curious about the building blocks of matter.
Interactive coding screencasts where you can pause and edit the instructor's code. Learn front-end development in a format you can't find anywhere else — truly hands-on learning.
Calculate in a notebook and share — from everyday math to engineering. Use variables, functions, and units and see results immediately. Add comments, copy calculations to apps like Word or Excel, or share them through an editable link. Calculate thermodynamic fluid properties with the integrated CoolProp library.
The issue tracker built for high-performance software teams. Blazing fast keyboard-first interface, Git integration, and project roadmaps. The tool engineering teams actually enjoy using. Nearly every action has a keyboard shortcut, which is why teams describe it as faster than the tracker it replaced.
Explore, test, and share original optical illusions with clear explanations. This PWA provides a collection of motion, geometric, brightness, and color illusions, along with interactive options. Users can also learn the science behind illusions and take tests. Designed for education and entertainment.
You built it. Let’s get it found.
Submit it to the directory and reach developers and users looking for exactly this.
Standard submission is free →