IXL vs. Khan Academy vs. Prodigy: Which Actually Works?
IXL, Khan Academy, and Prodigy are the three platforms that come up in every homeschool math conversation. They are all popular. They all have millions of users. And they are all fundamentally different.
Here is what each one actually does — not the marketing, but the reality when your child sits down to use it.
Signs your current platform isn't working
Before diving into comparisons, check whether this applies to your situation:
- Your child can "do math" on the app but cannot solve the same problems on paper
- They have been using the platform for months with little measurable progress
- They get frustrated or anxious when the platform introduces new material
- You suspect they are clicking through problems without understanding
- They rely on hints, guessing, or pattern-matching rather than actual reasoning
If two or more of these ring true, the platform is not teaching — it is just testing. Keep reading.
IXL: The practice machine
What it is: A massive bank of practice problems organized by grade and topic. Think of it as an infinite worksheet generator with instant feedback.
What it does well:
- Comprehensive coverage — every standard at every grade level
- The SmartScore system gives a clear mastery metric
- Diagnostic tools help identify skill gaps
- Detailed reporting for parents
Where it falls short:
- No teaching. IXL assumes your child already knows the concept. If they do not, they just get the same problems wrong repeatedly. There are no explanations, no visual models, no scaffolding.
- The SmartScore can be punishing. Getting a problem wrong drops your score more than getting one right increases it. Kids who are learning (and naturally making mistakes) feel punished for trying.
- Visually sterile. It looks like homework. For kids who already resist math, this does not help.
- No adaptive teaching. It adapts the difficulty of practice problems but does not adapt how it teaches. If your child does not understand fractions, getting easier fraction problems does not fix the problem.
Best for: Kids who already understand a concept and need to build fluency. Supplementing an existing curriculum with practice. Parents who want detailed progress reports.
Not great for: Kids who need concepts taught or explained. Kids with math anxiety. Primary instruction.
Cost: Subscription — approximately $10-20/month depending on plan.
Khan Academy: The free lecture hall
What it is: Video instruction covering every math topic from kindergarten through college. Each video is followed by practice problems.
What it does well:
- Free. Completely free. This matters.
- Sal Khan is a genuinely good explainer
- Comprehensive coverage from K through calculus
- Mastery-based progression within each unit
- The "mastery challenges" provide spaced review
Where it falls short:
- Passive learning. Watching a video is not the same as doing math. Kids can watch a 10-minute video on fractions and feel like they understand — until they try a problem.
- One teaching approach. If Sal's explanation does not click for your child, there is no alternative approach. No manipulatives, no visual models, no different angle.
- Minimal engagement for young kids. The platform is designed for motivated self-learners. A 6-year-old is not going to sit through a video lecture.
- Overwhelming navigation. Finding the right starting point for your child requires significant parent involvement.
Best for: Self-motivated older students (10+). Supplementing specific concepts a child is struggling with. Budget-conscious families who need a free option.
Not great for: Young learners (K-2). Kids who need interactive, hands-on approaches. Primary math instruction without significant parent involvement.
Cost: Free.
Prodigy: The game that teaches (sort of)
What it is: A fantasy RPG game where kids answer math problems to advance, battle monsters, and collect items.
What it does well:
- Kids love it. The game mechanics are genuinely engaging. Most kids will voluntarily play Prodigy when they would never voluntarily do math worksheets.
- Grade-aligned content
- Adaptive difficulty within the game
- Some reporting for parents
Where it falls short:
- The game IS the product, not the math. Kids spend most of their time navigating the world, collecting items, and managing their character. The actual math is a brief interruption between game activities.
- No real teaching. When a child gets a problem wrong, there is no explanation. They just... move on with an easier problem.
- The free version is limited. Most of the engaging game features require a paid membership. The free version feels like a bait-and-switch.
- Math anxiety in disguise. The time pressure and battle mechanics can create a "quick, guess something!" mentality rather than careful thinking.
- Grade-level, not skill-level. It follows grade-level standards, not your child's actual level. A child with gaps will encounter problems they are not ready for.
Best for: Getting a reluctant child to engage with math at all. Supplementary practice in a format kids enjoy.
Not great for: Primary instruction. Building deep understanding. Kids who get absorbed in games and skip the learning.
Cost: Free with limited features. Premium membership approximately $5-10/month.
Key Insight: All three platforms are popular because they solve a parent problem (keeping kids busy with math). But popularity is not the same as effectiveness — the question is whether your child is actually learning.
The Practice-vs-Teaching Problem
The fundamental issue with all three platforms is the same: they are practice tools, not teaching tools.
- IXL gives you problems but does not teach concepts
- Khan Academy teaches via passive video but does not adapt to your child
- Prodigy gamifies practice but does not explain anything
This works if your child already understands the concept and just needs repetition. It does not work if they are learning something new, have gaps, or need a different approach.
Key Insight: The biggest mistake parents make is using a practice tool when their child needs a teaching tool. More practice on a concept a child does not understand just produces more frustration.
The 5 Signs of a Real Teaching Tool
A tool that actually teaches math — not just tests it — should:
- Teach before testing. Introduce concepts with visual models and scaffolding before asking kids to solve problems independently.
- Adapt the teaching, not just the difficulty. If a child does not understand fractions, they do not need easier fraction problems — they need a different approach to teaching fractions.
- Place kids at their actual level. Not their grade level. Not where the curriculum says they should be. Where they actually are.
- Build understanding, not just answers. Visual models, manipulatives, and multiple representations — not just "pick the right answer."
- Review automatically. Space practice over time so concepts stick, without requiring parents to schedule review.
This is the approach Lumastery takes. It starts with a placement assessment to find your child's actual level, teaches concepts with visual models (ten frames, arrays, fraction bars), adapts daily based on performance, and handles spaced review automatically.
Can you use multiple tools?
Yes — and many families do. A common combination:
- Primary instruction: A structured curriculum (Singapore, Math-U-See) or an adaptive system (Lumastery)
- Practice/fluency: IXL for targeted skill practice
- Review/support: Khan Academy for revisiting concepts via video
- Engagement: Prodigy for days when motivation is low
The key is knowing what each tool does and does not do, and not expecting a practice tool to replace teaching.
Key Insight: You do not have to choose just one platform. The most effective approach is pairing a real teaching tool for primary instruction with practice tools for fluency and engagement.
The best math tool for your child is the one that matches what they actually need right now. If they need practice, IXL works. If they need free video explanations, Khan is excellent. If they need motivation, Prodigy helps.
If they need a complete system that teaches, adapts, and tracks mastery — without requiring you to be the math expert — that is what Lumastery is built for. A good first step is finding where your child actually is: the free placement test takes about 5 minutes and maps their skills across every strand.