Pricing
No subscription. Just corrections. Buy red pens once and spend them per text — leftovers never expire, and new accounts start with 12 red pens, enough for four base corrections. · Deutsche Version
Test
9.00€
24 red pens
0.38 € per red pen
≈ 4 full corrections or 8 base corrections
Try it with one whole class
Recommended
Teacher
24.00€
90 red pens
0.27 € per red pen
≈ 15 full corrections or 30 base corrections — one school year for 1 teacher
Red pens never expire, spread them as you need
School
69.00€
300 red pens
0.23 € per red pen
≈ 50 full corrections or 100 base corrections — a department or year-level team
Share across the staff room, invoice on request
One‑time purchase, no renewal, no hidden conditions. Payment via Stripe Checkout. If an analysis fails, the red pens flow back automatically.
What a correction is made of
Transcription and correction are always included. You only pay for analysis depth and number of pages.
Tuba correction
Transcription + correction + error analysis, first 2 pages
3 red pens
Error analysis
Table of every error with type and a short explanation.
included
Feedback
What worked, what to work on next.
+1
Grading
Points awarded against your own criteria.
+1
Evaluation
Personal closing note for the writer.
+1
Extra page
from the third page of a submission
+1
Examples
1 page · error analysis
3 red pens
1 page · all modules
6 red pens
5 pages · all modules
9 red pens
Refunds on failed analyses
If the AI analysis fails server‑side, the deducted red pens are refunded automatically and appear in your transaction log immediately. In rare cases a refund is queued for manual review — you are notified in‑app accordingly.