With two or three children at KS3, cost and admin multiply fast, so the real comparison isn't just teaching quality — it's how each tool handles more than one child. Some charge per child regardless, some let a household share capacity, and the difference can be significant across a school year.
What changes once there's more than one child?
A single-child household can pick whichever tool teaches best. A multi-child household also has to weigh: does the price scale linearly per child, does each sibling need a separate account and login, and does one child's needs (say, extra maths support) come at the expense of a sibling who needs a different subject. These aren't small details — they often decide whether a tool survives past the first term.
How do the main options handle multiple children?
| Tool | Per-child cost | Sibling accounts |
|---|---|---|
| Seneca Learning | Free per child | Separate free accounts, no shared cost |
| CENTURY Tech (home plan) | ~£8.33/month per child | Separate accounts |
| General AI assistants | One household subscription can be shared informally | No child-specific accounts by design |
| aitutors.me | Seat-pool model — one household subscription, seats allocated across children and subjects | One account, multiple children, flexible allocation |
Sparx Maths and Third Space Learning's "Skye" are provided through school and don't involve a household-level subscription decision at all, since access comes free via the school regardless of how many children attend it.
What does a "seat-pool" model actually mean?
Rather than charging a flat fee per child regardless of use, aitutors.me sells access as a household pool of (child × subject) seats — so a parent buying, say, three seats can allocate them as two subjects for one child and one for another, and reassign them between terms as needs shift. This matters for multi-child families specifically because children's needs at KS3 are rarely identical or constant: one may need daily maths support while a sibling only needs occasional English help, and a flat per-child fee doesn't reflect that unevenness.
Are free tools a better fit for larger families purely on cost?
On pure cost, yes — Seneca Learning is free regardless of how many children use it, and CENTURY Tech's home plan, while not free, scales at a fixed rate per child rather than requiring any single larger commitment. For families managing three or more children's KS3 revision on a tight budget, stacking free tools is a completely reasonable strategy, even if it means more separate logins to manage.
When does a paid, curriculum tool make more sense for a bigger family?
When a family wants a single coherent picture across children — one dashboard, one named human Coach, one place to see how each child and subject is doing — rather than juggling several free accounts. The EEF's research notes that smaller effective group sizes improve support quality; a seat-pool model tries to deliver something similar to individualised attention for several children without the linear cost of paying full price per child.
Frequently asked questions
Do AI tutoring tools charge more for a second or third child?
It varies. Some, like CENTURY Tech's home plan, charge a fixed amount per child. Others, like aitutors.me, use a household seat-pool that can be allocated flexibly across children and subjects rather than charging strictly per head.
Can siblings share one AI tutor account?
Most purpose-built tools give each child their own profile so progress tracking stays separate, even under one household subscription. Sharing a single login between children usually breaks progress tracking and isn't recommended.
Is it cheaper to use free tools for multiple children instead of a paid subscription?
Often, yes, in pure cost terms — Seneca Learning is free per child with no household cap. The trade-off is more separate accounts to manage and less unified visibility across children compared with one household subscription.
What is a seat-pool pricing model?
It's a household-level subscription where a fixed number of (child × subject) access seats can be assigned and reassigned across a family's children, rather than each child needing a separate full subscription regardless of how much they use it.
How much does aitutors.me cost for a family with multiple children?
Each subject seat is £360 per 4-month term, and a household's seat pool can be split across children and subjects as needs change — it isn't a flat per-child add-on fee.
For a household-level seat-pool that flexes across multiple children and subjects, see aitutors.me.