Comparison

Sumdog vs Polymath

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

Head to head
About

Sumdog

This app offers personalized math and spelling practice for children aged 5-14 through engaging games and adaptive learning. It uses diagnostic tests to tailor learning journeys and provides virtual rewards to motivate students. Parents can set up accounts for home use or connect to school-assigned work.

Highlights
  • Personalized adaptive learning
  • Engaging single and multiplayer games
  • Thousands of standards-aligned questions
  • Virtual coin rewards system
  • 3D avatar and house personalization
  • Diagnostic assessment
Features
Read full description

Make learning fun with Sumdog! Sumdog delivers highly engaging personalized practice for math and spelling, both in-school and at home. Suitable for children aged 5-14, our adaptive learning games and online rewards motivate children to learn and encourages regular practice. When children first use Sumdog, we run a short diagnostic test to provide a snapshot of their learning and areas for development. Our adaptive learning engine then uses the outcomes of the diagnostic to ensure each child’s starting point on Sumdog is at the right level. From this point, our sophisticated adaptive algorithms create a personalized learning journey based for each child based on their progress. - Over 30 engaging single and multiplayer games - Thousands of standards-aligned questions designed to consolidate and extend in-class learning - Virtual coin rewards to motivate children to learn - A 3D avatar, house and garden for children to personalize “I never thought an online program could do so much in such short bursts of time.” D. Hendershot, West Elementary, Kansas, US. Account set-up If your child has an account from school: Your child can log in with their details from their school. They’ll then be able to access any work that has been set by their teachers. If your child does not have an account from school: In the Sumdog app, parents can purchase a family plan covering up to 3 children. Once you’ve done this, you’ll create logins for your child to use the app. This gives them access to Sumdog’s games, and thousands of math, spelling and grammar questions. Subscription details: Your subscription starts with a free trial period and then changes to a subscription from $8.99 per month. No commitment period. Download the app and get started today! The amount will be deducted automatically every month via your Apple account. As long as the "Automatic renewal" feature is not disabled via the Apple account settings on your device, the subscription will automatically renew every month no later than 24 hours before your subscription period expires. Sumdog Terms: https://learn.sumdog.com/en-us/about-us/terms-of-use Sumdog Privacy: https://learn.sumdog.com/en-us/about-us/privacy-policy

About

Polymath

This app makes learning math fun for kids by allowing them to unlock worlds and interact with characters as they improve their skills. It offers personalized learning paths and weekly progress reports for parents.

Highlights
  • Personalized math learning algorithm
  • Unlockable game worlds
  • In-world character interaction
  • Weekly parent progress reports
  • Adaptive learning pace
  • Builds math confidence
Read full description

Want to learn maths while having fun? Polymath is a fun world where kids love to practice maths! Kids can unlock worlds and talk to in-world characters as they level up their maths skills. Polymath is perfect for kids who excel at maths and those who struggle, Polymath builds confidence in every child. Polymath is the only maths app that teaches at the pace your child learns whilst also making maths fun. Here’s how Polymath is loved by kids around the world: - It’s personalised: our algorithm learns how your child learns and gives them the questions they’re ready to see, when they’re ready! - It’s fun and engaging: learning should be fun and maths can be too hard for too many kids, our mission is to change that! Polymath is also dedicated to our PARENTS! We believe parents are SO important when it comes to children’s education journeys. That’s why you'll get weekly reports on your child's learning where you can see how your child is progressing, and help support them. Help your child build a love of mathematics today! Read the terms of use here https://polymath.how/terms Read the privacy policy here https://polymath.how/privacy

Screenshots

Sumdog4 screens
Polymath4 screens

Verdict

The call

The clearest difference is rating: Polymath at 5.0 against Sumdog's 4.2. Polymath also leads on review sentiment (100% vs 64%). Sumdog's advantage is ads (none vs shown) and ratings volume (1.6K vs 2). On price, in-app purchases, monetization model and device support 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. Sumdog sells 1 in-app purchase, starting at $8.99 per month and Polymath sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Polymath holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Sumdog has 1.6K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 64% of Sumdog's written reviews are positive against 100% of Polymath's.

UpkeepUpdate frequency

Sumdog ships an update every 2 months, Polymath every 4 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Sumdog versus Polymath: the parameters behind the verdict, then further details
ParameterSumdogPolymath
PriceFreeFree
Rating4.2 (1.6K ratings)5.0 (2 ratings) — better
Positive reviews63.7% of reviews100.0% of reviews — better
Number of ratings1.6K — better2
Update frequencyEvery 2 months — betterEvery 4 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size135 MB29 MB
Age rating4+4+
DeveloperSumdog Ltd.Celadon AI Limited

Customer experience

Sumdog

All ratings1,556 ratings
Positive78.3%
Neutral4.9%
Negative16.8%
Written reviews361 reviews
Positive63.7%
Neutral10.5%
Negative25.8%

Polymath

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Sumdog

Reported bugs

4 issues
  • Flower Defenders game not working properly
  • Goalz game not registering shots correctly
  • Sudden logout issues
  • Incompatibility with certain devices or browsers

Requested features

5 requests
  • Add more free games
  • Bring back old 2D games
  • Allow interaction with house and garden items
  • Improve multiplayer functionality
  • Add more customization options for avatar and house

Polymath

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Sumdog

Subscriptions1
  • Family Membership7 Days trial$8.991 Month
1 purchases

Polymath

Subscriptions1
  • Polymath+17 Days trial$4.991 Month

Questions

Is Sumdog free?
Sumdog is free to download, with in-app purchases available.
Is Polymath free?
Polymath is free to download, with in-app purchases available.
Which has better reviews, Sumdog or Polymath?
Polymath is rated higher. Sumdog averages 4.2 out of 5 from 1.6K ratings, while Polymath averages 5.0 from 2 ratings.
Do Sumdog or Polymath have ads?
Polymath shows ads; Sumdog does not.
Which is updated more often, Sumdog or Polymath?
Sumdog ships an update every 2 months, and Polymath every 4 months. Most recently, Sumdog was updated on November 6, 2026 and Polymath on November 3, 2026.

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