Step 1
Practice that looks like the real exam
Exam-style questions with a written explanation on every one — including why each wrong option is wrong. Nothing on exam day is a format you have not already seen.
Coming soon
Pass the EXANI-II — without the last-minute cramming
petso is a study app that makes daily practice stick: exam-style questions, a spaced-repetition plan, and a pet that grows every time you study.
- Questions like the real exam
- A daily plan that adapts to you
- Streaks you will actually keep
No account, no card, no email needed.
- The admission exam used by hundreds of universities across Mexico
- 500+ practice questions at launch
- Free to start — Plus for deeper practice
What's on the EXANI-II
petso covers every section with exam-style practice.
- Mathematical thinking
- Reading comprehension
- Indirect writing
- English (diagnostic)
Try one — a sample question
Question 1 of 3
And this is how you review — flip a flashcard
Card 1 of 3
How it works
Three steps, and no cramming.
Fifteen minutes a day. The plan decides what you see.
Step 2
A plan that knows what you would forget
Every question you answer comes back just before you would forget it, scheduled by FSRS — the same spaced-repetition scheduler Anki uses. Less time studying, more of it staying.
Step 3
The reason you come back tomorrow
Your pet grows every time you study. Showing up is the only part left to you — the plan decides the rest.
The research
None of this is our clever idea.
Two findings have held up in classrooms for decades. Most study apps use one. petso is built on both.
Retrieval
Being asked beats being shown.
Answering a question builds memory faster than rereading the explanation. It is why every session asks before it tells, and why the explanation only appears after you have committed to an answer.
Spacing
Gaps beat cramming.
The same half hour spread over three weeks is remembered far longer than one evening of it. It is why reviews come back to you on a schedule instead of when you happen to feel like it.
Scheduled by FSRS — the same spaced-repetition scheduler Anki uses.
A pet, not a guilt trip.
Your pet grows when you study. It never dies, never shames you, and one missed evening does not undo a month — pick it up tomorrow and nothing is lost.
Download the appNo account, no card, no email needed.
Coming soon
EXANI-II prep is on the way
We're building petso for EXANI-II. Tell us you're interested — it's how we decide which exam to build first.
I'm interestedpetso is an independent study app. It is not affiliated with, or endorsed by, any exam authority.