Calm beats the clock
XtraMath is built around a beat-the-clock timer, which many kids find stressful. NumFox has no countdown and no buzzer: a wrong answer simply comes back later. It still measures recall speed quietly in the background, so you get fluency data without making your child race.
Mastery you can actually read
Instead of a single score, NumFox gives you a weekly report of which fact families are mastered, practicing or still learning, by operation. You see that the 6s and 7s are locked in but the 8s are not, rather than a vague pass or fail.
More than math
XtraMath focuses on arithmetic. NumFox includes six worlds, math plus numbers, words, reading, grammar and chess, so one daily habit covers far more ground, and one subscription covers up to 5 children.
Where NumFox is different
- No timer-based pressure
- Per-fact mastery report, not a single score
- Six learning worlds, not math alone
- Fully bilingual, English and Spanish
- One price for up to 5 children, 7-day free trial
Is NumFox a drop-in replacement for XtraMath?
For daily math fact practice, yes, and it adds reading, words, grammar, numbers and chess. The difference is the calm, no-timer approach and a much clearer view of what your child has mastered.
Is NumFox free like XtraMath?
NumFox is a paid subscription with a 7-day free trial and no card to start. One plan covers up to 5 children, and every plan includes all six worlds.
Does NumFox still build speed?
Yes. It measures recall time quietly to tell automatic facts from effortful ones, without putting a stressful clock in front of your child.