Comparison

Osmo Lettertopia vs Math

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Osmo Lettertopia

This app transforms your tablet into a hands-on learning system for children aged 6-10. Players team up to build words, collect magical creatures, and boost spelling and social-emotional skills through collaborative play.

Highlights
  • Team-based word building
  • Collect magical creatures
  • Boost spelling skills
  • Develop social-emotional skills
  • Hands-on learning system
  • Collaborative play
Read full description

Move across the board by building words with letters and collect magical creatures as a team by matching descriptions! TEAM UP FOR EXCITING WORD BUILDING FUN! Boost spelling, word building and social-emotional skills. EXPLORE CORE LEARNING SUBJECTS THROUGH PLAY Designed for children ages 6-10 to build skills through fun collaborative play. TURN SCREEN TIME INTO LEARNING TIME Osmo’s unique technology transforms your tablet into a hands-on learning system! *Play your favourite Osmo Lettertopia on both iPhone and iPad! Use your iPhone with the Osmo Base for iPad and Words tiles - each can be found at playosmo.com. * Please see our device compatibility list here: https://support.playosmo.com/hc/articles/115010156067 *Requires the Osmo Base for iPad and Words tiles. Each sold separately or as part of Osmo Genius Starter Kit. Learn more by visiting www.playosmo.com. ABOUT OSMO -- 21ST CENTURY PLAY AND LEARNING Osmo combines healthy screen time and tangible play to make learning engaging and fun. Every Osmo game uses physical action and reflective artificial intelligence technology for digital learning in the real world. Help your child become more confident, thoughtful, and creative with Osmo.

About

Math

This app offers engaging math learning games for children, focusing on numbers up to 20. It features 15 mini-games with 150 levels designed for progressive learning, covering essential math skills from counting to basic arithmetic. The game adapts to each child's pace and aligns with common core standards.

Highlights
  • 15 captivating mini-games
  • 150 levels for progressive learning
  • Covers addition, subtraction, counting, and more
  • Adapts to child's learning pace
  • Aligned with common core standards
  • No ads
Features
Read full description

The fun game for kids learning math! Try Teach Your Monster: Number Skills free today and unlock the full adventure with a subscription. Subscriptions give you access to all the number games (plus every new update we add!), and can be easily managed or cancelled anytime in your App Store settings. No ads, just evidence-based, teacher-approved, fun monster learning! WHY CHOOSE TEACH YOUR MONSTER NUMBER SKILLS? • Developed by the Usborne Foundation, creators of the acclaimed game Teach Your Monster to Read • Collaboratively designed with early math specialists Bernie Westacott, Dr. Helen J. Williams, and Dr. Sue Gifford • Aligns with the USA's common core standards from Pre-K through to Kindergarten and beyond • Game supports math learning worldwide, emphasising numbers up to 20 • Featuring 15 captivating mini-games with 150 levels tailored for progressive learning • Join Queenie Bee and pals in Number Park: from dodgems to bouncy castles, learn math through play CORE BENEFITS • Tailored Pacing: The game adapts to each child’s progress, ensuring comprehensive understanding. • Curriculum Aligned: Seamlessly blend classroom teachings across the USA with at-home practice. • Engaging Play: Kids adore practicing numbers when every mini-game offers exhilarating math fun. SKILLS COVERED • Addition/Subtraction • The foundations of multiplication • Counting Mastery: Grasp stable order, 1-2-1 correspondence, and cardinality. • Subitizing: Instantly recognise number quantities. • Number Bonds: Understand numbers up to 10, their compositions, and versatile uses. • Arithmetic Basics: Gain proficiency in addition and subtraction. • Ordinality & Magnitude: Know the sequence and relational aspects of numbers. • Place Value: Learn how the order of numbers affects their value • Arrays: Develop the foundations of multiplication • Manipulatives: Use teaching aids familiar from the classroom like fingers, five frames, and number tracks SUBSCRIPTION DETAILS This app includes a free trial and a subscription that unlocks all the fun math games — plus every new update we add in the future! • Subscriptions are charged to your Apple account at confirmation of purchase. • Your plan will automatically renew unless you turn off auto-renew at least 24 hours before the current period ends. • You can manage your subscription or cancel anytime in your iTunes & App Store Account Settings. • Payment for renewal will be charged within 24 hours before the end of the current period, at the price of your chosen plan. • If you start a free trial and then subscribe, any unused trial time will be lost. • Your subscription works across any device signed in with the same Apple ID. Try Number Skills free today — help your monster learn numbers in a fun, friendly way, with no ads! Terms of use: https://teachyourmonster.org/legals Privacy Policy: https://www.teachyourmonster.org/privacy-policy Help and Support: https://help.teachyourmonster.org/ CONNECT WITH US Get updates, tips, and more: Facebook: @TeachYourMonster Instagram: @teachyourmonster YouTube: @teachyourmonster Twitter: @teachmonsters ABOUT TEACH YOUR MONSTER We’re more than just games! As a non-profit, we dream big: blending fun, magic, and expert insights to craft games children love. Collaborating with The Usborne Foundation, we're committed to fostering early years learning for every child. Dive into a world where learning meets play. Download Teach Your Monster Number Skills now!

Screenshots

Osmo Lettertopia4 screens
Math4 screens

Verdict

The call

The clearest difference is rating: Math at 4.5 against Osmo Lettertopia's 3.3. Math also leads on review sentiment (48% vs 6%) and ratings volume (8K vs 75). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Osmo Lettertopia sells 2 one-off in-app purchases and Math sells 3 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Math holds the better App Store score, 4.5 against 3.3. That said, the two scores are not equally well evidenced: Math has 8K ratings behind it against 75, so its average is the more settled of the two. Written reviews point the same way: 6% of Osmo Lettertopia's written reviews are positive against 48% of Math's.

UpkeepUpdate frequency

Osmo Lettertopia ships an update every 3 months, Math monthly. The most recent releases landed on November 4, 2026 and November 7, 2026 respectively.

Scorecard4 real differences · 6 level
Osmo Lettertopia versus Math: the parameters behind the verdict, then further details
ParameterOsmo LettertopiaMath
PriceFreeFree
Rating3.3 (75 ratings)4.5 (8K ratings) — better
Positive reviews5.6% of reviews47.8% of reviews — better
Number of ratings758K — better
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size277 MB226 MB
Age rating4+4+
DeveloperTangible PlayTeach Your Monster

Customer experience

Osmo Lettertopia

All ratings75 ratings
Positive56.0%
Neutral4.0%
Negative40.0%
Written reviews18 reviews
Positive5.6%
Neutral22.2%
Negative72.2%

Math

All ratings7,736 ratings
Positive87.0%
Neutral6.4%
Negative6.7%
Written reviews69 reviews
Positive47.8%
Neutral10.1%
Negative42.0%

Bugs and requests

Osmo Lettertopia

Not enough reviews yet to summarise bugs or requests.

Math

Reported bugs

3 issues
  • Unable to progress past certain levels
  • Sound issues and complete loss of audio
  • Login and account problems

Requested features

3 requests
  • Add more advanced math levels
  • Improve sound and stability
  • Allow parents to set starting levels

In-app purchases

2 purchases

Osmo Lettertopia

One-time2
  • 3-day trial of LettertopiaFree
  • Unlock Lettertopia$24.99
3 purchases

Math

Subscriptions3
  • Number Skills: Monthly7 Days trial$8.991 Month
  • Number Skills: Yearly$49.991 Year
  • Number Skills: Annual7 Days trial$69.991 Year

Questions

Is Osmo Lettertopia free?
Osmo Lettertopia is free to download, with in-app purchases available.
Is Math free?
Math is free to download, with in-app purchases available.
Which has better reviews, Osmo Lettertopia or Math?
Math is rated higher. Osmo Lettertopia averages 3.3 out of 5 from 75 ratings, while Math averages 4.5 from 8K ratings.
Do Osmo Lettertopia or Math have ads?
Neither Osmo Lettertopia nor Math shows ads.
Which is updated more often, Osmo Lettertopia or Math?
Osmo Lettertopia ships an update every 3 months, and Math monthly. Most recently, Osmo Lettertopia was updated on November 4, 2026 and Math on November 7, 2026.

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