Set it once. We match every box to their age and move it up a level on their birthday. Change your mind any time from your account.

Tell us their birthday once. Every month we send 2–3 puzzles matched to their age, and the box automatically moves up a level as they grow: toddler → kids → big kids. Pause, skip or change the level any time from your account.

2–3 brain teasers graded 3–5, never a repeat, with a sealed solutions envelope. Difficulty ramps up the longer you subscribe. Choose your starting level.

One puzzle for the kids, one for the grown-ups and one everyone does together. Tell us the kids' ages and we match the rest.
Your child's birthday is saved on the subscription. Each month when we pack, we check their age and pack the matching level. At 4, 8 and 13 the box moves up on its own.
Yes. From your account you can set the level manually if they're ahead or behind, and switch back to automatic later.
Add a second Grow Box, or pick the Family Box and we'll match both ages in one box.
Any time, no calls. Use the manage link above and it takes effect from the next box.