Pricing
Generating charts is free. A plan gives you clean files without limits and a preview without the watermark, and Pro adds the editor, AI and the API. By the week, month or semester, no auto-charges.
One file — one export
An export is a download of a clean file without the watermark. A lab with 30 functions is one export, and the same file in another format (Word, PNG, SVG, a structogram, a poster) doesn’t count again.
Free
$0
To try it out and submit your first lab.
- Generating and previewing charts — unlimited, watermarked
- Clean exports a month: 1
- Telegram bot: your first chart in a group is free
Student
PopularFor all the labs and coursework of a semester.
- Unlimited clean exports — every format
- Preview without the watermark — just a small rombik.app mark in the corner
- Charts in Telegram: send code to the bot, get the file back. Works in your class group too, even if the chat has no plan of its own
- Export history and re-downloads
Pro
When the chart has to match your teacher’s requirements.
- Everything in Student
- Chart editor: your own labels, Yes/No, “Figure N”, manual edits
- AI generation from a description — when there’s no code
- API, CLI and MCP — from agents, scripts and Claude/ChatGPT
Gift a plan
Pay for Student or Pro for someone else — the plan goes to their account by email.
A plan for a Telegram chat
One plan for the whole chat: an admin pays — the whole group draws, up to 50 renders a day. Every member makes their first chart for free.
Group · a chat of up to 40 members
Class · a chat of more than 40 members
Buy a voucher here and enter the code in the chat with /redeem — or pay for the plan in the bot itself with /topup.
- One-time payment for a period — no auto-charges.
- Extending adds the new days after the current ones; Pro on top of Student pauses it.
- Unlimited within fair use: up to 300 exports a month on Student, up to 1000 on Pro.
- Didn’t use the plan — we refund the payment (except Pro).
One-time payment via a monobank jar.
Prices are shown in USD before tax. Any VAT or sales tax applicable in your country is added at checkout, so your final total may differ.