NoaLingua Tools
Free tools for studying a language
Small utilities that open without an account
NoaLingua’s free tools run entirely inside the page. The dual subtitle maker pairs two subtitle files by their timing and saves one bilingual file; the study time calculator turns a routine into hours and shows its arithmetic. Neither needs an account or sends what you enter to a server.
Subtitles
Dual subtitle maker
Merge two subtitle files into one bilingual .srt, .vtt, .ass or Anki file, paired by timing rather than by line number.
Open the subtitle maker →Planner
Language study time calculator
Turn minutes, sessions and weeks into a total plan, then divide the time between input, review and speaking.
Open the calculator →Prefer evidence to planning? Explore the open Language Data Index or choose a concrete routine from the study-path library.