Coding practice your whole class actually does.
Every student gets problems matched to their level, with hints that teach rather than tell. Teachers see who is moving and who is stuck, and the college gets records it can file.
Free for one class for one month. Runs in the browser on lab PCs, laptops and phones.
Needs you this week
- 3courses: Python, C and C++
- 7,100+problems, each checked on our servers
- 440+small skills, seven stages per course
- 0installs: a browser is enough
Lab hours end. Practice usually doesn't happen.
- Students stall at the same places.
- Loops, pointers, recursion. By the time it shows up in an exam, the class has moved on.
- Big problem sets scare beginners.
- A list of 50 questions with no order tells a nervous student nothing about where to start, so many don't.
- Teachers can't see who is struggling.
- Checking every student's code by hand doesn't scale past a few submissions a week, and copied answers look like real ones.
Every student climbs at their own pace.
Each course is split into small skills. Every skill is a ladder of ten rungs that gets harder step by step. Cintax watches how each answer goes and picks the next problem to match.
- Rungs 1–4
Just the new idea
Short problems that use only what was just taught, so the first wins come fast.
- Rungs 5–7
Mixed with earlier skills
The new idea combined with ones they already know. Students start planning steps on their own.
- Rungs 8–10
Small real problems
Marks, bills, train timings, with the edge cases that catch people out.
- Always
Nothing above their level
A problem never needs something the student hasn't met yet. Every one is checked for this before anyone sees it.
Hints in three steps
From the idea to the detail that trips people up. None of them gives away the code.
Shows the exact line
Their output next to the expected output, with the wrong character marked. No bare "Wrong answer".
expected Average: 150.00
An AI tutor that won't solve it
It points to where to look, so the student still writes the fix themselves.
Notes and common mistakes
Every problem lists the slips students usually make, and Python skills come with one-page notes to download.
Built around a teacher's week.
Set up a class in minutes, set work by skill, and spend lab time on the students who need you.
Upload your class list
Roll numbers and names from Excel or CSV. Students join with one class link, which you can share in the class WhatsApp group, and Cintax matches them to your list.
Set an assignment
Pick a stage or a skill and a due date. It appears on every student's home screen.
See who needs you
Students stuck on the same problem, students who haven't practised in a week, and answers that were mostly pasted.
Open any student's work
Every check, every hint and AI review used, and how long they spent. Effort is visible, not just right answers.
Download the record
A lab record PDF and an Excel summary for each assignment, ready for internal assessment.
| Roll no | Name | Status | Solved |
|---|---|---|---|
| 23CS041 | Aarav Nair | Finished | 24 |
| 23CS042 | Diya Joshi | Finished | 31 |
| 23CS043 | Farhan Khan | Stuck | 12 |
| 23CS044 | Ishita Sen | In progress | 18 |
| 23CS045 | Rohan Kumar | Most pasted | 22 |
| 23CS046 | Tanvi Shah | Not joined | – |
One view for the whole college.
Teachers see their own sections. HODs, principals and the placement cell see what they need, without asking anyone for a spreadsheet.
Compare sections side by side
- Which sections are practising, and which have stalled
- Set up departments, sections and teachers yourself
- Give each teacher their own classes
A one-page college report
- Overview of every department in one place
- A PDF report with your college's logo to share or file
- View-only access, so nothing changes by accident
A shortlist in one click
- Filter by department, program, year and skills
- See who is strong at what, and who practised recently
- Export the shortlist to Excel for a drive
| Rohan Kumar · CSE | Recursion, arrays |
| Diya Joshi · IT | Strings, DP |
| Aarav Nair · CSE | Graphs |
No ads and no selling data. Read how we look after student data.
Each problem is run against its tests on our servers and checked by a second, independent answer before students see it.
Talk to the people who build Cintax on WhatsApp or email. We reply within a day.
Three courses, each from zero to placement level.
Each class is set up for one language. Every course has seven stages, and each stage builds only on the ones before it.
- 128 skills
First steps
Output, variables, input, operators and a first look at strings.
- 227 skills
Decisions and repetition
if, for, while and nested loops. Where most beginners first get stuck.
- 331 skills
Collections
Lists, tuples, sets, dictionaries and deeper string work.
- 425 skills
Functions and thinking
Writing functions, recursion, errors and the standard library.
- 524 skills
Real programs
Classes, generators, working with data, testing and debugging.
- 641 skills
Problem-solving patterns
The patterns behind placement and interview questions.
- 715 skills
Advanced patterns
Sorting, graphs, trees, strings, dynamic programming and maths.
Teaching a different stage this semester? Set the assignment from that stage. Students can still go back to earlier skills whenever they need to.
Works the way your campus does.
On any phone
Students practise on the bus or at home. A slow connection is fine.
Nothing to install
No compilers on lab PCs and no admin rights. Code runs on our servers.
Problems they relate to
Marks, rupees, train timings, cricket scores. Familiar, but never needed to solve the problem.
Fair practice
Pasted answers are flagged, and every check is recorded, so marks reflect real work.
Plans that follow your semester.
Syllabuses change every semester, so plans run for six months at a time. You pay for the students who use Cintax, not for the whole college.
Free pilot
Try it with one class before you decide anything.
FreeNo card, no commitment
- Full student access for one class
- Teacher dashboard and records
- A weekly check-in with us
Semester
For the classes and labs you choose this semester.
Per student, per semesterPrice depends on how many students
- Python, C or C++ for each class
- All teacher accounts included
- Lab records, Excel and PDF reports
- Help setting up every class
Campus
For every department, with views for HODs, principals and placements.
Per student, per semesterLower rate for more students
- Everything in Semester
- HOD, principal and placement views
- College report PDF with your logo
- Help setting up every department
Every college's price is agreed in a short call or on WhatsApp, and it stays the same for the whole semester. Learning on your own? Students can practise free.
Questions colleges ask.
Which languages can our students practise?
Python, C and C++. Each class is set up for one language, so a C lab practises C. Students can switch to another language on their own at any time; progress is kept separately for each language.
Do students need to install anything?
No. Students write and run code in the browser, on lab PCs, laptops or phones. Their code runs on our servers, so you don't need compilers or admin rights.
Is it only for computer science students?
No. Every course starts from the very first line of code and assumes no background, so it suits any course or year that teaches Python, C or C++, from first semester to placement preparation.
Does it replace our syllabus or labs?
No. It's the practice between classes. Teachers keep teaching as they do now, set assignments from the skills they've covered, and use the records for internal assessment.
How do you stop students copying answers?
Every problem has hidden tests, so only working code passes. Answers that were mostly pasted are flagged for the teacher, and every check, hint and AI review is recorded.
How is the price worked out?
Per student, per semester, for the students who actually use Cintax. The rate depends on how many students you have, and we agree it with you in a short call. The first month for one class is free.
Try Cintax with one class, free for a month.
Tell us about your college and class. We'll reply within a day to set up a short call.
Or write to hello@cintax.in
- A 20-minute callWe learn your course, language and semester plan.
- We set up your classYour class list, class link and teacher logins.
- Four weeks of practiceStudents practise; you see the class every week.
- We review it togetherYou see the results and decide.