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Independently evaluated by ImpactEd
4.8 / 5.0 teacher rating
2,700+ UK schools
Established in 2010

Evidence-based maths fluency practice

Sumdog is the adaptive maths platform independently proven to deliver statistically significant attainment gains, with the strongest progress for SEN and lower-attaining pupils.

Start your free 30-day trial        See the evidence

Children-playing-sumdog-in-class

Trusted by schools and trusts across the UK

The evidence ImpactEd-logo (1)

Not promises. Proof.

In a study across 14 English primary schools and 499 pupils, Sumdog delivered statistically significant improvements in maths attainment. 

2x

more SEN pupils meeting expected standard. From 28% to 59% in three terms.

100%

of teachers report positive pupil engagement across all ability levels.

50–60%

homework completion up from near zero, according to teachers in the study.

"Pupils with SEN, lower-attaining pupils, and those with lower self-esteem were the ones mostly benefiting from the use of Sumdog."

ImpactEd Efficacy Report

September 2025

Built for your reality

Every classroom has 30 different levels. Now you can reach all of them.

"I can't personalise practice for every learner."

Sumdog adapts automatically to each pupil's level in real time, during the same activity. Lower-attaining pupils get appropriately challenging questions. Higher-attaining pupils stay stretched. No grouping. No extra planning.

"My SEN pupils disengage from maths entirely."

Sumdog's game-based practice creates a low-pressure environment where struggling learners willingly participate. Teachers report that pupils who previously refused maths work now ask to use Sumdog voluntarily.

"I need to evidence progress but I don't have time for reports."

Sumdog auto-marks everything. View class-level and pupil-level insights instantly. Spot gaps, track progress, and evidence impact for leadership and Ofsted without a single spreadsheet.

How Sumdog works

Set it up in minutes. See results in days.

Adaptive practice that closes gaps

Every question is matched to each pupil's level. The platform identifies knowledge gaps and targets them automatically with no teacher intervention required.

Adaptive learning engine · Diagnostic testing

Learn through play

39 curriculum-aligned games keep pupils practising willingly in class and at home. Homework completion jumps from near-zero to 50–60%.

Game-based practice · Anti-rush accuracy system

Instant insight, zero marking

See exactly where your class stands. Identify who's struggling, with what topic, and plan interventions all from one clear dashboard.

Auto-marked reporting · Class and pupil-level views

Curriculum-aligned from day one

Questions map directly to the National Curriculum and White Rose Maths scheme. Set tasks by topic, term, or year group in seconds.

Full Year 1-6 coverage · White Rose Maths alignment

For SENCOs & inclusion leads

The strongest gains go to those who need them most.

The ImpactEd study found that Sumdog's impact was disproportionately positive for SEN and lower-attaining pupils. In Term 1, 71.8% of SEN pupils were working below expected standard. By Term 3, that dropped to 41.4% - and the proportion working at or above expected standard nearly doubled.

  • Adaptive difficulty means every pupil works at their own level without knowing it 

  • Game-based format reduces maths anxiety (statistically significant decrease for boys)

  • Pupils who are reluctant towards traditional maths work willingly engage with Sumdog

  • Teachers can step content back to earlier year groups for individual pupils

  • No stigma: the whole class plays the same game, but at different levels

"When we can put work in front of her with Sumdog to let her know that yes, she can succeed, her face lights up because she knows she can do it."

Maths Lead

& Year 4 Teacher

For MAT & LA leaders

One platform. Every school. Consistent evidence.

Sumdog scales seamlessly across classes, schools, and trusts. Central reporting gives leadership visibility into maths fluency progress without relying on individual teacher reports.

📈 Central dashboard

Monitor usage, accuracy, and attainment progress across every school in your trust or authority.

🔄 Consistent practice

Every pupil gets curriculum-aligned fluency practice regardless of their school setting. 

📋 Evidence for governance

Every pupil gets curriculum-aligned fluency practice — regardless of which school they attend.

Hear from real Sumdog users

30 days free. Up and running in minutes.

Join 2,700+ schools already using Sumdog. No credit card. Just evidence-backed maths fluency practice your pupils will engage with.
 
Free for 30 days · Set up in under 5 minutes · See the impact