The corpus · live data

Explore the data

Every word ranked. Every form tracked. Every sentence real. Browse the vocabulary architecture that drives lesson assembly.

He paid a
flying
visit

This is the corpus behind Kivvs.

A learning system with no decks to build — every session assembles itself from this data, sorted according to usage and tailored according to your skills and progress.

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The phonemic engine

Sound. Tracked. Contrasted.

Every phoneme mapped across the corpus. Every minimal pair ranked by how often native speakers use those words. The sound architecture that drives pronunciation training.

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This is what we mean by engineered.

No AI. Not a word list. Not a topic pack. Not a card deck. A living map of the language — ranked, tracked, and ready to teach. Every session draws from this corpus. Every lesson is assembled live.