Master the deck.
Cold, every time.

Mnemonica and Aronson, built in.

StackDrill trains you on a memorised deck with memory hooks and six drill modes — Card→Position, Position→Card, Neighbours, Sequence, ACAAN cuts, and hands-free.

Download on the App Store

iOS 15+ · iPhone & iPad · £4.99 one-time

From cold to cold-deck

Pick your stack

Mnemonica and Aronson are built in and ready to go. Or add any custom stack in your own order.

Learn the hooks

Major System position pegs give each number a concrete image; card images help you reconstruct the deck visually. Every association is editable.

Drill until it's automatic

Card→Position, Position→Card, Neighbours, Sequence, ACAAN cuts, hands-free. Weighted selection quietly resurfaces your weak cards.

Built for the deck you already memorised

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Two stacks built in

Mnemonica and Aronson, ready to drill with no setup.

✏️

Fully custom stacks

Running a different order? Add any stack you've memorised, in your own sequence.

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Major System pegs

Every position gets a concrete image, so numbers stop being abstract.

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Editable associations

Don't like a hook? Change it. Every card-to-image link is yours.

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Six drill modes

Card→Position, Position→Card, Neighbours, Sequence, ACAAN cuts, hands-free.

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Weighted resurfacing

Cards you get wrong come back more often — quietly, with no settings screen to manage.

Ready to know your deck cold?

Download StackDrill — one-time purchase, no subscription, no account.