calc84.online is a free in-browser TI-84 Plus CE graphing calculator for students preparing for SAT, AP, and IB exams — no download, no account, no install.
What's included:
- TI-84 Plus CE emulator (full graphing calculator)
- TI-30XS MultiView emulator (SAT/ACT/AP/IB approved)
- Error fix guides: Validating OS loop, graph not showing, TI Connect CE issues
- AP Statistics guides: normalcdf, invNorm, LinReg, hypothesis testing
- Embeddable iframe for teachers and tutoring websites
Free AI VIN decoder for any US-titled vehicle. Paste a VIN, get a printable report in ~30s: specs, open NHTSA safety recalls, maintenance data (oil, tires, fluids), and an AI buying summary with a 1–10 score.
What's different: it handles EVs correctly (battery info, not oil specs), never invents data it doesn't have, and ships an MCP server so Claude can decode VINs in-chat. Free embeddable widget too. Built on free official government data.
