Make the steps click.
Move through one clear idea at a time. Tap to advance and revisit a step whenever you need.
SMALL STEPS. SHARPER SKILLS.
Turn “I can’t do that in my head” into
“Let me try.” Build stronger math skills
with clear steps and quick daily practice.
Always ad-free · Learn at your pace · Practice offline in the app
What’s 35 × 11?
Split the digits. Leave a little room.
No download. Just a moment of discovery.
LESS GUESSING. MORE “GOT IT.”
Go beyond remembering an answer.
See how to get there, then build the
confidence to do it on your own.
Move through one clear idea at a time. Tap to advance and revisit a step whenever you need.
Start with untimed practice. Build accuracy and learn from each worked solution.
Ready for a challenge? Try a 60-second round and work toward your own best score.
SMALL STRATEGIES. USEFUL EVERY DAY.
Learn a simple mental math strategy for multiplying two-digit numbers by 11, including when to carry.
Learn the strategyCalculate squares such as 35 squared and 85 squared using one small multiplication and a predictable ending.
Learn the strategyUse the gaps from 100 to simplify calculations like 97 times 96. Understand place value and carrying.
Learn the strategyMORE LEARNING. ZERO DISTRACTIONS.
Start with free lessons and practice.
Unlock advanced difficulty and mixed
timed challenges with Premium.
Planned US launch pricing. Final prices, taxes,
and purchase terms appear in Google Play.
MONTHLY PREMIUM
A little more flexibility.
Renews monthly until canceled.
Manage your subscription in Google Play.
LIFETIME PREMIUM
Own it forever. Zero ads. Pay once.
Lifetime access to NumberStride Premium.
Purchase and restore through Google Play.
GOOD QUESTIONS.
The Android app is being prepared for release. Explore the lessons here and join the launch list for an email when it is ready. iOS is planned for later.
Students building arithmetic confidence, with parents and educators supporting their practice. Begin with untimed exercises and move to speed challenges when ready.
The app practices calculation skills that can support school math competitions. It complements broader preparation in reasoning, algebra, and geometry. NumberStride is not affiliated with an exam or competition organizer, and does not guarantee results.
Core Android lessons, practice, and local progress work without an account or internet connection. Internet is needed for Google Play purchases and purchase verification. The website’s email reminder is optional and separate from app progress.
No. Free and Premium learning are both ad-free. Premium adds advanced difficulty and mixed timed challenges.
Purchases will take place inside the Android app through Google Play. Joining the website launch list is free, does not reserve a price, and does not create a subscription.
YOUR NEXT STEP STARTS SMALL.
Be there for the NumberStride Android launch.
For parents and educators supporting a learner.
No payment. No app account. Just a launch reminder.