§ 00  ·  introduction

Understand
exactly why
you lost points.

StemyAI reads your rubric, your professor's feedback, and your submission — then returns evidence-locked explanations, personalised lessons, and a clear path to improvement. See how →

14,302
analyses today
142 ms
median latency
+ 8.4 pt
avg monthly gain
CALC · PSET 07 · EVIDENCE REPORT2026.05.23
grade
87/ 100+ 5 prev
confidence96%
three rubric items reviewed
rubrictap a line →
ai explanationcited · rubric R3

The outer function sin(u) requires multiplying by du/dx = 2x. You skipped the inner derivative — a common slip on composite functions; we'll queue a 3-minute drill.

your work
d/dx[sin(x²)] = cos(x²)
expected
2x · cos(x²)
prescribed lesson
Chain rule · decomposing composite functions
3 min · queued
Begin
evidence-locked · cited to source142 ms
*  a note

Built for students who want to improve — not just pass. We won't write your essay. We'll show you why your last one only earned a B−.

StemyAI — 2026
§ 01the problem

Your teacher gave you feedback.
You still don't know what to do.

prof. okonkwo  ·  pset 07  ·  82/100

"−6, see rubric. Watch the chain rule. Also: units?"

what this doesn't teach you

Generic AI chatbots guess. Tutors aren't there at 1 am. Office hours are days away.

StemyAI closes the gap between what your professor wrote and what you actually need to learn — line by line, citation by citation.

§ 02how it works

Three steps. No magic.

Upload, analyse, improve. Roughly ninety seconds from start to lesson queued.

01step 01 / 03

Upload

Drop your rubric, your professor's feedback, and your submission. PDF, photo, or paste.

  • 01rubric.pdf
  • 02feedback.png
  • 03submission.pdf
02step 02 / 03

Analyze

StemyAI builds an evidence-locked breakdown. Every claim cites the exact rubric line and your exact passage.

  • 01R3 → −6 pt · chain rule
  • 02R5 → −4 pt · simplify-first
  • 03R7 → −3 pt · units
03step 03 / 03

Improve

Personalised micro-lessons, persistent error tracking, and a grade forecast that actually moves.

  • 01lesson · chain rule · 3 min
  • 02flashcards · 12 cards
  • 03+ 8.2 pt forecast
§ 03modules

The operating system for getting better at STEM.

Eight modules, all included on every plan. The signature one is the genome — it watches everything you miss across courses and surfaces the one concept most likely to move your grade this week.

01
Evidence-locked grading
Every AI claim is bound to a rubric line and a passage in your submission.
02
AI tutor chat
Ask follow-ups in context. The tutor sees your work, not a blank prompt.
03
Micro-lessons
3–5 minute targeted lessons, generated for the exact concept you missed.
04
Error genome tracking
A growing map of your weak spots — across assignments, courses, semesters.
05
Smart flashcards
Auto-built from your missed concepts. Spaced repetition, not busywork.
06
Grade predictions
Forecast your trajectory and which assignments actually move the needle.
07
Smart suggestions
One study move per week. The one most likely to raise your grade.
08
Privacy-first
Your work is yours. End-to-end encrypted. Never used to train models.
08 modules · all includedlast revised  ·  2026.05.23
§ 04the difference

Not a chatbot. A learning system.

other AI toolsStemyAI
Guesses based on your prompt
Reads your actual rubric
No rubric, no citations
Every claim cited to source
Forgets your weaknesses
Tracks your error genome
Same answer for everyone
Personalised to your gaps
Optimised to keep you chatting
Optimised for your grade
Encourages copy-paste
Builds durable understanding
§ 05from students

Skeptical? So were they.

"I went from staring at '−6 see rubric' for twenty minutes to knowing exactly what concept I missed in twelve seconds. The cited rubric lines are the whole game."

Maya R.
Sophomore  ·  MIT · 18.02
C+ → A−
grade

"It doesn't just give answers. It tells me why I think the way I think, and then quietly fixes it."

Jordan S.
Senior  ·  AP Physics C
B → A
grade

"The error genome thing is wild. It noticed I keep missing edge cases in recursion across three different psets. Nobody else noticed."

Priya K.
Junior  ·  UCLA · CS 31
B− → A−
grade
§ 06pricing

Priced like a textbook. Works like a tutor.

Free
$0/ forever

The basics, free for every student.

Start free →
  • 3 analyses / month
  • Evidence-locked breakdowns
  • Basic micro-lessons
  • Error tracking (30 days)
Recommended
Pro
$15/ month

The full STEM learning OS for serious students.

Start 7-day Pro trial →
  • Unlimited analyses
  • AI tutor chat (in-context)
  • Full micro-lesson library
  • Persistent error genome
  • Smart flashcards & forecasts
  • Priority processing
Institution
Custom

For schools, departments, learning centres.

Talk to us →
  • SSO + LMS integration
  • Cohort analytics
  • Custom rubric models
  • On-prem option
  • Dedicated success manager
all prices in USD  ·  vat where applicablecancel any time
§ 07questions

Reasonable doubts, answered.

No. We won't draft your essay or solve your pset. We explain what the rubric expected, what you actually wrote, and how to close the gap.
§ 08  ·  begin

Stop guessing.
Start understanding.

Free forever. No credit card. Cancel any time. The first analysis takes ninety seconds — less than a snack break.

no credit card STEM-specific AI cancel any time