behind every algorithm.Ask anything
18,276,000+ students already use Astra4.73 on iOS
Computer science tutorStudy computer science with AI
Learn computer science with Astra AI through a personal plan, clear context and targeted practice for exam-ready mastery.
App of the DayFeatured by Apple
Have an exam coming up?
Give me everything you're studying from.
Loved by students. Trusted by parents. Built to teach computer science.
Students, parents and teachers use Astra every day for computer science homework, problem sets and exams. It explains the method behind every answer, so you can reason through the next problem yourself.
- Students
- 18,276,000
- Parents
- 192,000
- Teachers
- 264,000
Astra AI in numbers
Computer science explained step by step, 24/7
Learn
Understand the logic behind every algorithm.
From logic and sets to graphs and complexity, Astra explains the key ideas first, then shows you the method behind them.
Clear, direct answers
Key ideas first.
Recap last.
The method, not the result
Not just the result.
The method.
Use the right function
Pick the right function for the job.
Connect ideas
Connect ideas across units.
How to study computer science with Astra AI
Ask about discrete math, algorithms, data structures or complexity, or paste notes from class. Astra answers quickly with clear, step-by-step explanations, short examples and a recap. Big ideas are split into simple pieces, so you learn the method and not just the result.
Use the right function for the job, from Problem Solver to Work Checker, then finish with targeted practice, get instant feedback, track your mastery and always know the next best step.
Practise
Practise until it clicks.
Understanding comes from doing. Work through real problems, with feedback on every answer.
A plan built around your exam.
Photos of your notes
Practise and check yourself.
Smart Text
Flashcards
Repetition
Quiz
Podcast
Exercise
Chat
Knowledge Gaps
True / False
Stuck? Ask for a hint.
Tutor is listening
Ask, speak or take a photo
Track your progress.
Learning timeLast 7 days
17 min
8 min
12 min
5 min
14 min
2 min
MonTueWedThuFriSatSun
What do parents and students say about Astra AI?
Real words from students and parents who learn with Astra AI.
“Dude, I was really sick and missed a whole week right when they started a new unit. I opened Astra AI just for fun, typed ‘explain this thing,’ and it walked me through everything from zero to done. Like… what?! I went back and didn’t feel behind at all. Guess who won’t need tutoring for a while? 😴😴”
Liam (Student) ⭐⭐⭐⭐⭐
“Just wanted to drop some feedback about Astra AI! It’s been a huge help for my little sister and three of her classmates! 👏💪 Also… it helped me too, I passed my uni exam with it!! And some people say Astra isn’t for real results. 😏🤣”
Maya (Student) ⭐⭐⭐⭐⭐
“Lowkey amazing, it lets you think for yourself but still gives super clear explanations. As a parent, it helped me explain things to my kid and actually help during study time.”
Chloe (Parent) ⭐⭐⭐⭐⭐
“Tried the AI tutor, free version only and it’s legit. Explanations are super simple, and when something wasn’t clear it broke it into tiny steps. Pretty sure I’m upgrading this week. Huge potential. Thanks!”
Jay (Student) ⭐⭐⭐⭐⭐
“Astra AI completely changed how I study. I used to grind for hours and still feel lost. Now I get clear steps, quick checks, and a plan I can actually follow. Less stress, more wins. I finally feel ready for exams.”
Ava (Student) ⭐⭐⭐⭐⭐
“I got this for my two younger kids and they were like Mom this explains everything. He can’t just copy homework anymore because it makes him pause and think about the next step. Honestly that’s the best part.”
Sarah (Parent) ⭐⭐⭐⭐⭐
“Astra helped on every test this year. When I hit a question where my brain just froze it guided me through and I could finish with confidence. Highest scores I have ever had. Respect.”
Ethan (17) ⭐⭐⭐⭐⭐
“Quick update. Both kids use it and say everything is finally clear. The teacher even called to say he participates more. He reads the explanations in advance and remembers better in class. Looks like we are saving on tutoring this year.”
Emily (Parent) ⭐⭐⭐⭐⭐
“This honestly saves my life with school work. I was never the best at studying and this explains things in a way that finally sticks. Feels like having a calm tutor in my pocket.”
Ryan (Student) ⭐⭐⭐⭐
“Quick note from a previously skeptical mom. We got this for our daughter last month and this Thursday she brought home her first top grade. She even studies after school without me asking. Homework gets done and when she’s stuck we read the explanation together. Please thank the whole team.”
Laura (Parent) ⭐⭐⭐⭐⭐
“I used to open a book and just stare. This breaks big problems into small steps and gives hints without spoiling the answer. The daily checklist keeps me moving. I actually look forward to my study sessions now.”
Jasmine (Student) ⭐⭐⭐⭐⭐
“This was kind of my last shot before a tough uni exam. I used it for three weeks and passed. A couple of answers loaded slowly once or twice but overall it kept me calm and on track. Solid.”
Daniel (Student) ⭐⭐⭐⭐
Study computer science with Astra AI in three steps
From a problem you cannot solve to one you can, in three steps.
1. Ask or paste notes
Ask about any topic, from Big O to spanning trees, or paste notes from class.
2. Learn the method
Get a clear, step-by-step explanation with short examples and a recap, split into simple pieces.
3. Practise and track mastery
Work through targeted problems, get instant feedback and always know your next best step.
Try it on your next problem
Start free and see how Astra explains your next computer science problem.
What does research tell us about AI and student learning?
Research into AI tutoring shows promise, but the way it’s used matters. The important question is what students can understand, remember, and do independently afterwards.
01
The learning happens when they take part.
02
Getting it right isn’t the same as learning it.
03
How AI helps makes a difference.
About this research
These findings come from studies of different tutoring systems and learning activities. They are not results from a study of Astra AI.
Students learned more than twice as much.
In a peer-reviewed randomized controlled trial (Kestin et al., Scientific Reports, 2025), university physics students using a purpose-built AI tutor achieved more than double the learning gains of students in an active-learning classroom - in less time.
Frequently asked questions
Astra AI is an advanced learning tool that uses artificial intelligence to provide personalised study support. It helps you understand complex concepts, offers tailored solutions and encourages independent learning.