YOUR DATA
Your record, in your own file.
What was practiced, when, and which problems went wrong — saved as JSON on your device. No lock-in: back it up anywhere, and let any AI read it to plan what comes next.
How it works →Custom drills by Eidendo
One page that fits today.
A4 practice sheets where you decide the what, the how much and the how hard — in a conversation with your AI.
MAIN ROUTE · AI + MCP
Ask your usual AI for today's page
Connect StudyRiver MCP to an AI agent like Claude Code or Codex and just say "20 multiplication facts and one logic puzzle". The AI is your coach; StudyRiver typesets the A4 problem sheet and its answer sheet — monochrome, made for home printers.
Claude CodeCodexClaude DesktopAny MCP client
Setup guide (3 min) →
WEB APP
Works without an AI, too.
Pick skills and minutes on screen and get the PDF. No account; records stay on your device, with JSON export and import.
Open the web app β →Own the learning loop.
Don't just generate problems — keep the results, and let them shape the next page.
- 1. Ask your AIDecide content, amount, difficulty
- 2. Print on A4Problem sheet + answer sheet
- 3. Record resultsJust the numbers that went wrong
- 4. Own it as JSONReview with any AI, plan the next step
MathLIVE
Addition, subtraction, multiplication, division — 23 skill steps with carrying/borrowing constraints and vertical forms.
Generate →
Logic & MazesLIVE
Grid rules, rotation, odd one out, paper folding, cube nets, block counting, missing pieces, symbol math — plus printable mazes.
Generate →
MazePLAY
Play the mazes from our videos. Guide the mouse to the cheese.
Play →
LogicYouTube
Explore the StudyRiver Logic channel.
Watch →
PDYouTube
Watch StudyRiver PD on YouTube.
Watch →
StatYouTube
Explore the StudyRiver Stat channel.
Watch →
OddYouTube
Explore the StudyRiver Speed Odd channel.
Watch →