Outfox

Last updated 22 August 2026

Outfox is adaptive SAT and ACT practice, built as a daily game. It gives high school students a short, structured practice session each day, chooses questions based on how they have actually performed, and brings back the ones they got wrong until they stick.

What a session is

A session is a short set of questions, usually around fourteen, in three parts: a few warm-up reviews of questions you have seen before, a focused block on the skills you are working on, and a fast lightning round worth double points.

You start each session with five hearts. A wrong answer costs one. Running out does not end the session. Outfox switches into review mode instead, and the questions you missed come back as review items that cost nothing. The intent is to keep you practising rather than punish you for being wrong.

Correct answers earn XP, harder questions earn more, and answering several in a row earns a combo bonus. Practising on consecutive days builds a streak.

How it adapts

Outfox keeps an Elo-style rating for each skill, the same idea used to rank chess players. Every skill starts at 1000 and moves up or down with each answer, by more when the result is surprising.

Three things decide what you see next, weighted roughly half, a third, and a fifth:

• Difficulty fit. Outfox aims just below your current rating on that skill, so you succeed often enough to keep going.
• Accuracy. Skills you get wrong more often come up more often.
• What is due. Questions you have answered correctly return on a widening schedule, after 1 day, then 3, 7, 16, and 35. Get one wrong and it resets to the start.

The result is that Outfox spends your time on what you are weakest at, rather than on what you already know.

Test mode

Outfox includes six timed section simulations, run under real time pressure:

• SAT Reading and Writing, 24 questions in 28 minutes
• SAT Math, 20 questions in 32 minutes
• ACT English, 18 questions in 13 minutes
• ACT Reading, 16 questions in 14 minutes
• ACT Math, 18 questions in 18 minutes
• ACT Science, 14 questions in 17 minutes

From your practice history, Outfox produces a projected score range for the SAT and the ACT.

Those projections are estimates, not predictions. They are calculated from how you have done inside Outfox and nothing else. They are not a forecast of your real test result, which depends on the day, the test form, and much that no practice app can see.

Who it is for

Students aged 13 and up preparing for the SAT or the ACT. Outfox works on its own, or alongside friends in a crew, where you can see each other's weekly progress.

What Outfox does not do

Outfox does not guarantee that your score will improve. No practice app honestly can. What it can do is make sure the time you spend goes on the questions you are most likely to get wrong.

There are no ads in Outfox, and no advertising or analytics software of any kind. What it collects and why is set out in the privacy notice.

Availability

Outfox is live at outfox.lohco.ai.

Sign-in is limited to invited test users right now. Google is reviewing the app's sign-in verification, and until that finishes only accounts we have added can sign in. You can open the page either way, but sign-in will fail if your account is not on the list.

We are not putting a date on when that changes. When verification completes, anyone with a Google account will be able to sign in, and this page will say so.