Pricing
No subscription. Just corrections. Buy red pens once and spend them per text — leftovers never expire, and new accounts start with 6 red pens, enough for a first full correction. · Deutsche Version
Starter
10.00€
30 red pens
0.33 € per red pen
Lehrer
30.00€
120 red pens
0.25 € per red pen
Schule
60.00€
300 red pens
0.20 € per red pen
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.