Comparison

Sumdog vs NPCAT

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

NPCAT

Features
Read full description

This app is the Nicholas Postgate Catholic Academy Trust's own parent engagement and communication app and it is designed to enhance communication between the school and parents of our students. Benefits of this app for parents of students at the Nicholas Postgate Catholic Academy Trust include: - Receive push notifications and in-app messages from the School. - Keep important School information available away from the clutter of email. - View the school calendar and noticeboard, with information relevant to you and your child. - Access important School information via The Hub. - Keep up to date with your children's activities via the Newsfeed. - Clear and visible Notice updates for important School events. - Paperless communication. Registration: To use the Nicholas Postgate Catholic Academy Trust app, you will need an account which will be provided by your child's school.

Screenshots

Sumdog4 screens
NPCAT4 screens

Verdict

The call

The clearest difference is in-app purchases: NPCAT at none against Sumdog's 1. Sumdog's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads 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. NPCAT asks for nothing beyond the download.

UpkeepUpdate frequency

Sumdog ships an update every 2 months, NPCAT every 3 months. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.

Scorecard2 real differences · 8 level
Sumdog versus NPCAT: the parameters behind the verdict, then further details
ParameterSumdogNPCAT
PriceFreeFree
Rating4.2 (1.6K ratings) — better—
Positive reviews64.0% of reviews—
Number of ratings1.6K — better—
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size134 MB139 MB
Age rating4+4+
DeveloperSumdog Ltd.Weduc UK Ltd

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

NPCAT

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Sumdog

Subscriptions1
  • Family Membership7 Days trial$8.991 Month
None

NPCAT

No in-app purchases

Questions

Is Sumdog free?
Sumdog is free to download, with in-app purchases available.
Is NPCAT free?
NPCAT is free to download, with no in-app purchases.
Do Sumdog or NPCAT have ads?
Neither Sumdog nor NPCAT shows ads.
Which is updated more often, Sumdog or NPCAT?
Sumdog ships an update every 2 months, and NPCAT every 3 months. Most recently, Sumdog was updated on September 22, 2026 and NPCAT on September 19, 2026.

Other comparisons