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I tested Duolingo, Babbel, and Rosetta Stone with 100 Students for 6 Months. Only 3% became fluent.

We recruited 100 adult language learners and tracked them for six months across three of the market’s most promoted language apps: Duolingo, Babbel, and Rosetta Stone. The marketing claims were bold. “Achieve fluency in months,” they promised. What we discovered was starkly different from the narrative you see in app store reviews and marketing materials. […]

We tested 10 subtitle apps with 100+ videos: accuracy rates, hidden limitations & when free tools fail you

The uncomfortable truth: CapCut failed on 34% of videos featuring regional accents. Veed.io’s processing time tripled with background noise. And InShot’s subtitle alignment collapsed on podcasts with multiple speakers. We spent 4 months testing 10 subtitle apps across 142 real-world videos to expose what generic reviews hide. The real problem with “free subtitle apps”: what generic […]

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