Pros
- Free courses matched to UK exam specifications
- Teachers can set self-marking homework at no cost
- Knowledge gaps view shows which topics each student is weak on
- School plans sync classes from SIMS, Arbor and Bromcom
Cons
- AI-marked exam questions and whole-school reports need a paid plan
- Free tier limits how many assignments can run at once
- Content is built around UK exams, so less useful elsewhere
- School prices are quote only
Features
- Assignments
- Self-paced practice
- Adaptive learning
- Analytics
- AI feedback
- AI assistant
- SIS sync
- Single sign-on
- Gradebook
Seneca is a UK revision and homework platform for students from Key Stage 2 to A Level. Students work through short courses written against UK exam specifications, answering questions as they go, and the platform marks every answer and brings back topics they got wrong. Teachers can set that work as homework and see who did it and what they struggled with. The core courses and teacher tools are free, and schools can pay for extra exam practice, AI marking and reporting.
Who it’s for
Seneca fits UK secondary schools first, especially science, humanities and languages departments preparing students for GCSE and A Level. It also covers KS3, IGCSE, International A Level, IB Diploma, BTEC and the 11+, and has free KS2 courses for primary. A history teacher who wants Year 11 to revise the Cold War over half term can set the matching course in a couple of minutes and check completion on the Monday.
If you teach outside the UK system, the fit is weaker. The courses follow UK specifications and exam boards, so an American or Australian teacher would spend time hunting for content that roughly matches their curriculum. For a general practice tool that works across systems, Khan Academy is a better start.
What it does well
The free tier does more than most. A teacher creates a class, invites students, and sets assignments on any course on the platform. Seneca marks the work automatically, and the class dashboard has tabs for students, assignments, grades and knowledge gaps. The knowledge gaps tab is the most useful part. It shows which topics individual students keep getting wrong, and a teacher can set a targeted assignment to just those students.
The courses are short and active. Students read a small chunk, then answer questions in several formats, and the platform repeats material they got wrong. Paid student modes add Smart Learning Mode, Wrong Answer Mode and Cram Mode for the weeks before exams. The iOS and Android apps let students revise on a phone on the bus.
Paid school plans add the things heads of department ask for. Seneca’s school pages describe three tiers. School Sync covers MIS integration, single sign-on, linked parent accounts and a gradebook. School Premium adds exam-style questions with AI marking, sync with named systems including SIMS, Arbor and Bromcom, and department and senior leader reports. Premium AI+ adds unlimited use of Seneca’s AI tutor, called Amelia, plus revision prediction tools. Seneca’s help centre says premium reports can break down usage by subject, class, teacher and student, including Pupil Premium and SEN groups, which matters when SLT asks whether disadvantaged students are doing the homework.
Parents get a view too. With linked parent accounts on a school plan, they can see what has been set, whether it is finished, and which topics their child is weak on.
Where it falls short
The free and paid split can confuse students. Many will hit a locked Premium course or mode and assume the school expects them to pay. Tell families clearly what the school covers and that the free courses are enough for set homework.
Seneca’s question formats test recall well but rarely ask for extended writing unless the school pays for exam questions. A Year 13 English literature student gains less from it than a Year 10 biology student learning definitions and processes. Treat it as a knowledge tool, not a substitute for essay practice and teacher feedback.
The free teacher tier also caps how many standard assignments can run at the same time, according to Seneca’s help centre, so a teacher juggling several classes may hit that limit.
Pricing
Students and teachers can use the free courses and core homework tools without paying. Families can buy an individual Premium plan. Seneca does not publish prices for its school plans on its website as of November 2026, and pricing is quoted per school after a demo. The School Sync package offers a free trial.
Privacy and data
Seneca’s privacy policy says that when a school provides student data, Seneca acts as a processor and the school is the controller. Its student guide to the policy says data is stored in the European Union, in Dublin, with 256-bit AES encryption, and that the company holds Cyber Essentials accreditation. Seneca lists the data it collects from students as email, name, year group and school.
The general privacy policy says Seneca may use data to deliver relevant website content and advertisements and to measure their effect, and that it asks for opt-in consent before sharing personal data with third parties for marketing. It also says data may be used to improve its products, algorithms and models, without naming AI providers. Ask Seneca for its data processing agreement and sub-processor list, especially for the AI features. Our student data privacy checklist lists the questions to ask.
Verdict
Seneca is one of the best free revision tools a UK secondary teacher can set as homework, and the knowledge gaps view gives real information for planning. Paid school plans make sense once several departments use it and leaders want MIS sync and reports. Schools outside the UK exam system, and teachers who mainly need extended writing practice, should look elsewhere in our learning apps rankings.
Plans compared
Free
Free
- Free courses
- Self-marking homework
- Knowledge gaps view
School Sync
Quoted
- MIS integration
- Single sign-on
- Linked parent accounts
- Gradebook
School Premium
Quoted
- Everything in School Sync
- Exam questions with AI marking
- Department and senior leader reports
Premium AI+
Quoted
- Everything in School Premium
- Unlimited AI tutor use
- Revision prediction tools
Prices as checked for this review on 7 Nov 2026. Check the vendor's site for current prices.
Frequently asked questions
Is Seneca free?
Seneca has a free plan. Paid plans add more features or school-wide tools, and the pricing section of this review explains what each plan includes.
What devices does Seneca work on?
Seneca works on the web, in a browser, iOS and Android.
Where can schools use Seneca?
Seneca is sold mainly to schools in the United Kingdom.
How does SchoolStack rate Seneca?
We score Seneca 8.3 out of 10. It ranks #6 of 16 in our learning apps ranking. It ranks #6 of 20 in our quizzes and assessment ranking.
What are the best alternatives to Seneca?
The highest-rated alternatives in our learning apps ranking are Khan Academy (8.9), Duolingo (8.6) and Sparx Maths (8.5). See all Seneca alternatives.