Your language classes in one place.
- AI in every plan
- No credit card needed
Past simple
Lessons. Sections and exercises inside every lesson: gap fills, matching, word order, quizzes, writing, spoken answers and more.
A simplified demo: the real app does much more.
See Letros in action.
Six features, one by one, in under three minutes.
01 Everything for your lessons in one place.
- Classes, courses and homework in one place
- Live lessons: see each student's answers as they type
- Instant auto-check, three tries per answer
- Class view with every student's progress and mistakes
- Voice comments on homework and a progress report for parents
- Clear interface, no training needed
02 AI builds exercises in seconds.
- From a photo, screenshot, PDF or Word file
- Or just describe what you need
- AI picks the exercise type and fills in the answers
- Saved at once, edit any exercise afterwards
- Included in every plan, no credits to buy
- Assign it to a class or print it as a PDF worksheet
18 exercise types
- Fill in the gaps
- Word choice
- Drag and drop
- Matching
- True or false
- Quiz
- Sort into columns
- Word order
- Vocabulary
- Teacher-reviewed writing
- Article / text
- Pictures and words
- Flashcards
- Mystery boxes
- Type it in
- Arcade games
- Targets
- Brawl Tactics
Tap a word on the left, then its pair on the right.
03 AI checks written work.
- Written homework comes back with every mistake marked and explained
- Writing Checker reads handwritten essays from a photo
- Scores against Cambridge criteria, A2 Key to C2 Proficiency
- Spanish, French, German, Portuguese and Italian essays against DELE, DELF, Goethe, CAPLE and CELI levels
- Results in about 20 seconds
- A2 Key
- B1 Preliminary
- B2 First
- C1 Advanced
- C2 Proficiency

04 Quest: the lesson becomes a game.
- The class plays as one team on a map
- The team moves forward by doing the lesson's exercises well
- Made for teen groups; turn it on for any class that could use a game
05 Share courses.
- Share a course privately: a personal link for one teacher
- Or open it to everyone who has the link
- Download your own courses as a ZIP with a printable PDF for each lesson
- Pictures and audio included: your materials stay yours
06 Games for the class.
- A race through the town with a question at every barrier
- Maze, word catch, targets and mystery boxes from any word list
- Share a game with a 4-digit code: the class plays on one leaderboard
For private teachers
Your own workspace for classes, courses and homework. You create logins for your students, so they sign in without an email address. Your timetable shows every lesson of the week.
For language schools
Invite your teachers with a link. Each teacher runs their own classes and sees their students' logins and passwords, so a forgotten password never stops a lesson. One school timetable shows every teacher's lessons.
Pricing
Free for teachers during our launchEvery plan has every feature. Students never pay.
Courses on another platform, in PowerPoint or PDF? We move them all to Letros for free: write to hello@letros.app.
For private teachers
Free
Up to 4 students
$0forever
Teacher
Up to 50 students
$12/mo
Writing Checker: 20 essays a day on Free, 100 on Teacher
For schools · unlimited teachers
Up to 20 students
$29/mo
Up to 50 students
$54/mo
Up to 100 students
$79/mo
Up to 200 students
$119/mo
Up to 300 students
$159/mo
All prices are in USD per month, plus VAT where applicable · Writing Checker: 100 essays a day per teacher
More than 300 students? Write to hello@letros.app and we'll put together a plan for you.
Ready for tomorrow's lesson?
