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Fix the mistakes you repeat.

For every mistake, AI finds the pattern, explains why, and builds the practice to fix it.

  1. 1A mistake in battle
  2. 2AI finds the pattern
  3. 3Targeted practice
  4. 4Mistake fixed

Source

Ayer fui a la biblioteca.

Your answer

I go to library yesterday.

Error patterns

  1. 1

    Past events need the past tense: with yesterday, it's went, not go.

  2. 2

    Countable nouns need an article: the library.

After practice

I went to the library yesterday.

Practice 4/4 · original sentence fixed

One match is 5 sentences — free lets you practice 2 weak spots a day, Pro unlocks them all.

Ultraland Pro

US$59.88US$29.99/yr

That's US$2.50 a month

  • Unlimited targeted practice — train every weak spot until it's gone
  • Custom banks: practice your own word lists
  • Unlimited word training sessions
  • Pro stats: weak topics, hardest words, progress trends
  • Double gold from wins, tasks, and daily prizes
  • Word Dex: up to 4× the daily XP cap

Also includes: a Pro badge on leaderboards, match history export, and early access to new features.

Billed US$29.99 per year

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US$29.99 /yrBilled US$29.99 per year