Patch Notes — Explain to a Caveman

v2.0.0 PRERELEASE 2 July 17, 2026 Latest

The Store is open. Spend your hard-earned Sparks: grab the Elements bundle to unlock the four elemental themes, or a Streak Freeze to save your flame on a day you slip. Dark and Light themes are free for everyone — and you can try any theme on before you buy.
Mastery Map is live. Seven unit bars that fill from your real answer history (accuracy × how much you've covered), plus an exam-readiness score weighted the way the actual AP exam is. See exactly what you've nailed and what still needs work.
Set a streak goal. Pick a target — 7, 14, 30, or 60 days — hold to lock it in, and the ring fills toward it as you show up. Hit it and a one-time XP + Sparks bonus lands.
A bigger, realer question bank. The dailies now pull from a hand-written, reviewed bank of genuine AP Human Geo questions scheduled out for weeks — deeper (and sneakier) than the early placeholder questions.
The Social Hub. Set a username, add friends, and climb a leaderboard you can flip between Friends, your Class, and Everyone. Teachers can run verified classes with join codes, and last week's #1 wears a 👑 crown all week.
Clubs. Nudge a friend to go do their daily — but only once you've done yours. The option pops up right after you finish today's question. No more clubbing people over a thing you skipped!
The notification bell. A new bell in the top bar gathers your news, invites, and clubs in one place. Big updates greet you when you log in, waiting invites get a little nudge, and you can tap any item to read it in full or accept it right there.
Plus a pile of fixes and polish: streaks now correctly drop to zero when you stop showing up, the leaderboard ranks by total XP, friend search works from the first letter, and locking in a streak goal sets off a full-screen flame burst.

v2.0.0 PRERELEASE 1 July 10, 2026

The Daily Challenge is live. One real AP Human Geography question a day, right on the home page. Pick an answer, lock it in, and get the full "why" behind the correct choice.
Streaks are real now. Answering the daily — right or wrong — keeps your streak burning. Showing up counts; the caveman respects consistency.
Fresh feature icons. The hub tiles traded their emojis for hand-made icons that tint themselves to match whichever theme you're using.
Your profile's week strip now fills in with real answer history, day by day.
Behind the scenes: the site's wording can now be tuned live, so typos have a much shorter life expectancy.
Why prerelease? The question bank is still small while more questions get written and reviewed. Expect the dailies to get deeper (and sneakier) from here.

v1.3.0 July 7, 2026

New home base. The site now opens on a hub page with everything ETAC can do — the Explain tool moved to its own page and both Character and Study mode launch straight from a tile.
Sign in with Google. Your progress now has somewhere to live: a status bar (HUD) on every app page shows your name, level, XP, Sparks, and daily streak.
Profile page. Level ring, lifetime stats, your caveman collection, theme picker, and previews of mastery + badges — tap your avatar anywhere to open it.
Sneak peeks. Mastery Map, Store, Class & Friends, and Exam Cram each have a preview page now, so you can see what's coming (and vote for what lands first via feedback).
The theme picker on app pages moved into the HUD's ⋮ menu; the four elemental themes work everywhere, including all the new pages.
Study Mode can now be linked to directly (explain.html?mode=study) — that's how the hub's Study tile lands you there.

v1.2.1 June 10, 2026

Fixed the "new patch notes" red dot so it slides into the patch-notes link when the bottom nav opens, instead of clinging to the corner of the pill.
Study Mode now hides the character picker — it never changed the study-guide output anyway.
Added a subtle "clear" button by the access-code status so you can forget a saved code.
The bottom-nav home icon now bulges out when the menu expands, and the home-page helper text reads a little more naturally.
Friendlier empty state with a bobbing bone, a gentle entrance animation for explanations, and a touch of caveman idle/hover charm.
Accessibility: honors your system "reduce motion" setting, announces results more cleanly to screen readers, raises low-contrast text, and adds ⌘/Ctrl+Enter to explain.
Under the hood: a shared site.js trims duplicated code across pages, and the version number now lives in just one place.

v1.2.0 May 22, 2026

New navigation menu near the bottom of the screen, featuring home, patch notes, roadmap, and a new feedback shortcut
The page you're currently on lights up in the nav menu with the active theme's accent color, so you can tell where you are without thinking about it!
Custom concepts and characters now get an AP-HuG / school-appropriateness check before they're sent to the model. This is to reduce unrelated content generation and keeping the tool safe to use for all students. Anything actually on-topic still works the same as before.
New Feedback button on the about and roadmap pages too, in case you want to send a thought without opening the nav. Goes to a short feedback form. You can put your ideas, bug reports, questions, or just roast my hard work I guess...
Version number moved out of the bottom nav and into the footer credit line on every page ("Made by Laitham · class of '29 · v1.2.0").

v1.1.0 May 17, 2026

New Roadmap page showing what's being worked on, what's coming next, and ideas under consideration.
The version + patch notes link is now a centered pill at the bottom of every page (and includes the roadmap link). Easier to find.
A small red dot appears next to "patch notes" whenever there's a new release you haven't read yet. It clears the moment you open this page.
Daily usage limit is now tracked per device instead of per IP — fixes the shared-school-network bug where one Chromebook could eat another's daily quota.
Usage counter no longer resets when the backend goes idle, so the 10/day cap is now actually 10/day.

v1.0.0 May 14, 2026

Initial release of Explain to a Caveman.
Character Mode: explain any AP Human Geo concept in the voice of a chosen character (Caveman, Pirate, Wizard, Grumpy Dragon, Startup Founder, and more).
Study Mode: a clean Definition / Why it matters / Real-world example.
Four elemental themes (Fire, Air, Water, and Earth), each with its own gradient and accent color. Click the element you want in the top right to switch.
Custom concept and character entry, plus "Surprise me" for random combinations.
Streaming explanations that appear character-by-character in real time.
References the official College Board AP Human Geography CED and a class case studies examples.
Subtle version badge and patch notes link in the bottom right corner.
Daily usage counter in the top-left showing free uses remaining.
About section featuring how to use, what was involved, and the awesome creator behind it all.