Blog
Practical guides, app notes, and small things worth learning.
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Chad vs Romania flag: how to tell them apart
Chad and Romania both use blue, yellow and red vertical stripes. Compare the flags side by side and learn when the shade of blue is a useful clue.
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How to resize a video without cropping
Keep the whole frame when changing video size. Compare fitting, padding and stretching, with a worked 1920x1080 to 1080x1920 example.
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How to crop a horizontal video to 9:16 on Android
Turn a landscape clip into vertical video: choose a 9:16 crop, keep your subject in frame, and understand what happens to resolution before you export.
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Learn Polish vocabulary as a Russian or Ukrainian speaker
A practical Polish vocabulary routine for Russian and Ukrainian speakers: useful phrases, false friends to check, and ways to practise beyond recognising a word.
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Average vocabulary size by age: what the research measures
Compare vocabulary estimates by age, understand word families versus lemmas, and see why children's word counts cannot be compared directly with adult test scores.
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How many words does a B2 speaker know?
B2 has no official word count. Learn what vocabulary estimates measure and how to choose words for practice.
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Native speaker vs learner vocabulary
Compare vocabulary estimates for native speakers and learners. Check the counting units, understand text coverage and find words to practise.
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How to learn all the flags of the world (that actually stick)
196 flags sounds impossible until you stop cramming and start spacing them out. Here's the method that works, plus a free flags quiz to test yourself right now.
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How to unblur a photo on Android (free, without uploading it)
Blurry photo you wish you could save? Here's what 'unblur' can and can't do, when AI actually helps, and how to sharpen a shot in your browser right now.
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Two new apps dropped (and nobody got hurt)
Fresh from the capybara labs: Logic Math: IQ Riddles and Cropzen, a no-nonsense video crop & trim tool. Two more reasons your home screen looks suspiciously calm.
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How many English words does the average person know?
One study estimated 42,000 lemmas for a 20-year-old native speaker. See why that differs from word-family counts and what your own test can tell you.
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Hello, world!
We're Dope Capybara, a tiny indie mobile studio shipping calm, useful and slightly weird apps. Here's the elevator pitch.