Resources

Tools and videos.

Free resources Spencer built or curated. No sign-up required.

Tools

Free tools.

Practical tools Spencer built for language learners. Free to use.

Tool
The Fluency Formula Dictionary^™
A free offline pop-up dictionary for 10 languages. Hit a hotkey to look up any word as you read, save it with your own example sentence, and export a ready-to-study flashcard deck. Mac and Windows.
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Tool
The Silent Phase Calculator^™
A Fluency Formula-designed tool to help you decide whether to start speaking on day one or wait until you have enough immersion to actually output your target language.
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The Freeze Test^™
You understand far more than you can say. Two questions and a 20 second test show you the exact gap between what you recognize and what you can actually pull out of your head under pressure.
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Language Learning Method Audit^™
Answer three honest questions about how you study right now, and it tells you whether your current method is actually moving you toward fluency, or quietly wasting your time, and names the one leak to fix first.
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Fluency Timeline Calculator^™
Tell it your target language, your hours so far, and how much you can study each day. It puts a real month on conversational fluency, and shows what happens to the date when you turn the daily time up.
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Fluency Sprint Planner^™
Pick the date you want to be fluent by. It works backward from it to show how many hours a day you actually need to put in to get there, and tells you straight if the date needs to move.
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Spencer's most-referenced videos on language acquisition, the system, and what actually moves the needle.

The lazy method that got me fluent insanely fast
How I got fluent by doing the opposite of what most courses tell you. The case for input, low pressure, and trusting your brain to wire the language on its own.
The weird way USA military linguists learn languages crazy fast
What the U.S. military's elite language school gets right that 99% of self-learners miss. Pulled apart and rebuilt for anyone learning at home.
The easy way to learn languages 10x faster
The whole Fluency Formula system in one video. Why most learners are studying when they should be acquiring, and what to do instead.
Language learning is broken (but here's how to fix it)
The reason most language apps and classrooms leave you stuck at intermediate forever, and the small shift that fixes it.