This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
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
Hey PH! 👋
I built this because students kept showing up to AP exams unfamiliar
with their TI-84. The calculator is expensive (~$100+), easy to forget
at home, and hard to practice with outside of class.
calc84.online runs the full TI-84 Plus CE in the browser using the
open-source ading2210/ti84pce-html5 (MIT license). I also built a
TI-30XS MultiView emulator from scratch for students who use the
more affordable scientific calculator option.
The error fix guides came from analyzing 100+ Reddit posts about
TI-84 problems — turns out "Validating OS" and "graph not showing"
are the two most common issues with almost no good fixes online.
Would love feedback from teachers or students who use graphing
calculators regularly!
how accurate is the emulator compared to an actual TI-84, especially with the more obscure functions like the finance solver or piecewise expressions during exams?
Felt just like my old TI-84 from high school, even down to the key clicks. Loved that the TI-30XS is right there for SAT mode so I'm not fumbling between tabs.
genuinely impressed that the embeddable iframe works cleanly on the page itself without me even having to dig for it. makes sharing with my tutoring students way less friction than digging through a doc.
About calc84.online on Product Hunt
“Free TI-84 & TI-30XS calculator in your browser”
calc84.online was submitted on Product Hunt and earned 4 upvotes and 4 comments, placing #96 on the daily leaderboard. 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
calc84.online was featured in Education (78.8k followers) on Product Hunt. Together, these topics include over 30.1k products, making this a competitive space to launch in.
Who hunted calc84.online?
calc84.online was hunted by Rose. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how calc84.online stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Rose