The story behind this search is almost always the same. Your child spent a school year with a silent penguin named JiJi, came home talking about puzzles instead of worksheets, and for once didn't fight math practice. Then summer arrived, or a school switch, or you simply wanted more of a good thing at home — and you hit the wall: ST Math is sold to schools. It isn't really a consumer product a family can just go buy.
That wall is genuinely frustrating, because ST Math earned the loyalty. MIND Education built something unusual: a K-8 program that teaches math concepts through visual puzzles with no words and no numbers in the early stages. For visual learners, and for kids still building English, that design removes a tax most math software quietly charges. Wanting it at home is a reasonable thing to want.
Full disclosure before we go further: we make Infinilearn, one of the alternatives below, so we have a horse in this race. Nothing on this list is an exact clone of ST Math — as far as we can tell, nothing available to families is — so instead of pretending otherwise, we'll be specific about which part of the ST Math experience each option actually replaces.
What Makes ST Math So Hard to Replace
Most math software asks a child to read a question, decode what it wants, and produce an answer. ST Math inverts that: the early puzzles contain no words and no numerals at all. The concept — equivalence, proportion, spatial structure — is the puzzle. A student can't lean on memorized procedures or test-taking instincts, because there's nothing to plug into. They have to reason about what's actually happening on the screen.
That's why two groups of kids thrive on it disproportionately. Visual thinkers finally meet math in their native format instead of through paragraphs. And English language learners get to demonstrate mathematical reasoning without their reading level standing between them and the math. If your child is in either group, you've seen the effect firsthand, and it's worth trying to preserve. We've written more about this style of learner in our guide to math games for visual learners.
One practical note before you shop for substitutes: ask your child's teacher whether the school's ST Math license includes any home access, and whether it continues over the summer. Policies differ school to school, and a two-minute email is cheaper than everything below. If the answer is no — and for families who've left the school, it will be — read on.
What Visual-Puzzle Learning Builds — and What It Doesn't
Before picking a replacement, it helps to be honest about what the puzzle-first approach was and wasn't doing, because the best home setup usually needs two pieces, not one.
- What it builds: conceptual understanding — the "why" underneath the procedure. A child who has wrestled a concept into place visually tends to recognize it later in symbolic form, and tends not to make the category errors that come from memorizing steps without meaning.
- What it doesn't build: fluency and notation. Math class, from about 6th grade on, is conducted in symbols and words. Under Common Core, one-step equations arrive in 6th grade, two-step equations in 7th, and linear functions in 8th — and every test, worksheet, and word problem presents them in written form. A child can deeply understand balance and equivalence from puzzles and still freeze when asked to solve 3x + 5 = 20 on paper, simply because they haven't practiced the written version enough times for it to feel routine.
Neither half is optional. Concepts without fluency collapse under time pressure; fluency without concepts collapses the first time a problem looks unfamiliar. ST Math supplied the first half at school. Your home setup should keep some of that visual reasoning alive and add the standards-aligned reps that make it usable in class.
The Closest Things a Family Can Actually Get
1. DragonBox (Algebra 5+ and 12+)
Best for: Algebra intuition through pure puzzles · Price: About $8 one-time per app · Format: Mobile puzzle app
If you want the thing that feels most like ST Math, this is it. DragonBox teaches the logic of equation-solving through puzzle mechanics first, sneaking real algebraic structure in before the notation shows up. Kids who would groan at "solve for x" happily play their way into the same reasoning, and the moment the game reveals that they've been doing algebra all along is genuinely great.
The honest limits: the content is finite — this is a one-time purchase you'll finish, not an ongoing practice program — and it's mobile only. Think of it as a brilliant few-week intuition sprint, not a replacement for daily practice.
Pros: The closest match for ST Math's puzzle-first, concept-before-notation philosophy; about $8 as of this writing; no subscription. Cons: Finite content that ends; mobile only; covers algebra intuition specifically rather than the full grade-level curriculum.
2. Desmos and GeoGebra
Best for: Watching middle school math ideas move · Price: Free · Format: Visual math tools, not games
These are the free workhorses of visual math. They aren't games and won't motivate anyone on their own — they're tools, the way a whiteboard is a tool. But for making concepts visible, they're superb. Have your 8th grader graph y = 2x + 3 in Desmos, then change the 2 and watch the line tilt: that's slope, taught the ST Math way, in thirty seconds. GeoGebra does the same for geometry — angles, transformations, area — with shapes a student can drag and reshape.
Because they're tools rather than curricula, they work best with a small prompt from you or a teacher: a "what happens if…" question to chase. Used that way, they're the best free preservation of ST Math's see-it-first spirit.
Pros: Completely free; genuinely excellent visualizations of slope, graphing, and geometry; no account hoops. Cons: No game, no progression, no motivation built in — a self-directed student or an involved parent is required.
3. Infinilearn
Best for: Grades 3-9 · Price: Free (optional premium) · Format: Fantasy RPG
Ours — so weigh this entry accordingly. Infinilearn takes a different route to the same destination. Where ST Math is puzzle-first, Infinilearn is game-first: a browser-based fantasy RPG where students explore 15 zones, run quests, and fight bosses, and every attack, spell, and ability is powered by solving a real math problem matched to Common Core standards for grades 3-9. The motivation comes from the game being worth playing; the math is the fuel.
What it shares with ST Math is the refusal to make practice feel like a worksheet, plus real adaptivity: the engine tracks accuracy topic by topic, and weapon attacks pull problems from a student's weakest subjects, so a 7th grader shaky on proportional relationships simply meets more proportion problems mid-battle, without anyone assigning anything. The full game is free — every zone, every quest, all grades 3-9 math, no ads, nothing paywalled. The free parent dashboard shows accuracy by topic for one child, which is how you'll know whether the visual concepts from ST Math are converting into standards-level performance.
Pros: Free full game; adaptive practice aimed at actual gaps; safe multiplayer (preset phrases only, no open chat); runs in a browser on any Chromebook or laptop. Cons: Problems are multiple choice, not wordless visual puzzles — this is standards practice with game motivation, not conceptual discovery; grades 3-9 only; browser-based with no native mobile app; newer and smaller than the incumbents.
4. Khan Academy
Best for: Free instruction for every topic · Price: Free · Format: Video lessons plus mastery practice
Khan Academy is the best free instruction available, full stop — a nonprofit library of video lessons and mastery practice for every grade. But be clear-eyed about the format shift: it's video-led, not visual-puzzle. A teacher explains while drawing; your child watches and then practices. That's watching someone else reason, which is a different cognitive act than the puzzle-solving ST Math built its reputation on. Some ST Math kids take to it; the ones who loved figuring things out themselves often find it flat.
Pros: Free, comprehensive, well-sequenced; the natural source of instruction when a concept is brand new. Cons: Requires self-motivation; lecture-shaped rather than discovery-shaped; not a game.
A Home Recipe That Approximates the ST Math Effect
No single product on this list is ST Math, but a combination gets surprisingly close, and most of it is free:
- Run DragonBox as a sprint: it's about $8 and finite, so treat it like a great book — an intense few weeks of algebra intuition, especially valuable the summer before 6th or 7th grade.
- Use Desmos or GeoGebra when a concept is the problem: any time your child says "I don't get why," reach for the visual tool before the explanation. Graph it, drag it, break it.
- Cover the daily reps with a game they'd choose: concepts stick when they're used. A free practice game — ours or another from our roundup of the best free math games for middle school — turns the reps into something that happens without a fight.
- Keep some math off-screen and visual: a $5 whiteboard goes a long way. Draw bar models for fraction and ratio problems, sketch area models for multiplication, and graph a story ("the pizza place charges $8 plus $1.50 per topping") as a line. This is the ST Math instinct — represent it before you calculate it — and it needs no license at all.
One more situation worth naming: some families arrive here because the school program they're trying to continue is DreamBox rather than ST Math — the other adaptive program parents mostly meet through a school purchase. That's a different product with a different failure mode (it sells home subscriptions, but its interface skews young for middle schoolers), and we've covered it separately in our guide to DreamBox alternatives.
The Bottom Line
ST Math is special because it teaches concepts visually, wordlessly, and without shortcuts — and it's frustrating because families mostly can't buy it. The good news is that the experience decomposes into parts you can replace: DragonBox for puzzle-driven algebra intuition, Desmos and GeoGebra for free visual exploration, Khan Academy when new concepts need teaching, and a free standards-aligned practice game for the daily reps that turn understanding into performance.
Remember what the puzzles were and weren't doing: they built the why, and your middle schooler still needs the fluency and notation that class runs on. Pair one visual-thinking tool with one practice tool, keep sessions short and regular, and check in three weeks whether the topics that were shaky have moved. That combination — not any single app — is the real ST Math alternative.