See the gaps without keeping a spreadsheet.
A type set lays out one slot for every coin a series needs: every year, every mint mark, every variant. My Coin Stack fills the slots you already own and leaves the rest showing, so what you're still hunting for is never a question you have to reconstruct.
Slots fill themselves
You never drag a coin into a slot. Each slot matches against your Collection on coin type, year, mint and variant, so the way to add a coin to a set is simply to add the coin. The slot flips from Needed to Owned on its own the next time progress calculates.
Progress you can see across every set
Each set carries a progress ring with owned, missing and total counts. Sets group themselves into In Progress and Completed, and one that reaches 100% earns a trophy badge, which after four years hunting a 1916-D you have earned.
Binder view, or a list
Switch between a list of sets and a binder-style grid that lays the coins out the way an album would. Search by year, name, mint or country, sort by how complete each set is, and group by country.
Missing only, then go find it
A Missing only toggle strips a set down to the gaps. Tap any needed slot to see what it wants and add it to your wishlist, so the coin you're hunting is recorded the moment you notice it's absent.
At a glance
- Set filling
- Automatic, matched from your Collection
- Views
- List, binder grid, missing-only
- Wishlist
- Add a needed slot straight to your wishlist
- Availability
- Free on every plan
Looking for step-by-step instructions? The support site has the full guides →
Try it on your own collection.
Free in any browser, with no card required. Your data is yours to export whenever you want it.