Collection is your personal 'what I own' list. Add battle tops and loose parts, set how many of each you own, and see it all in one place. It stays on this device and does not change stats, decks, or battles.
Adding to your collection
On the Parts grid, each tile has an Add button under the name. Tap it to add one to your collection. Once you own at least one, the button becomes a − N + stepper so you can adjust the count without leaving the grid. Battle tops add from the Catalog card (round add button) or from the showcase header (Plus beside the star). Once owned, those toggles show a check; set how many you own on the Collection page.
Open a part's detail to add by exact colorway, or use the Collection section there to set the quantity. The Parts page header also has a Collection button that jumps straight to your list.
The + and − here only change loose spares you added yourself. They never touch copies that come from a battle top.
List and grid views
Both the Battle Tops and Parts tabs have two layouts. Use the toggle in the filter bar to switch between the list and a thumbnail grid. In the Battle Tops grid, each top you own gets a tile: tap it to open the showcase, and use the tile controls to change the quantity or remove it. In the Parts grid, every colorway you own (loose ones and the ones inside your battle tops) gets its own tile: tap the thumbnail to open the part's details on that colorway, and use the tile stepper to adjust loose spares. Each tab remembers its own choice on this device.
Reading the numbers
The summary strip at the top shows two completion gauges that double as the tab switcher. Battle Tops counts the distinct tops you own against the full playable catalog. Parts counts the distinct part molds you own against every mold in the Parts catalog. The percentage under each is how much of that catalog you own. Tap either tile to switch tabs.
The Battle Tops gauge counts battle tops only. Launchers, accessories, stadiums, and sets still appear in the Battle Tops tab with their own quantities, but they do not count toward the gauge or the breakdown below, so the catalog percentage always reads as how many battle tops you own. That is also why the count on the tab, which includes those extras, can be higher than the gauge.
On the Battle Tops tab, the breakdown panel expands into more detail. Distinct is how many different tops you own. Pieces adds up every copy, so duplicates raise pieces but not distinct. The type bar, generation strip, and the product line and brand gauges all count distinct tops rather than pieces, so owning three of one top never skews the shape. Each generation, line, and brand also shows owned against the catalog total for that group.
The Parts tab has its own breakdown panel, with the same Distinct and Pieces meaning: Distinct counts different part molds, Pieces adds up every copy. In place of the type bar and generation strip it shows a kind strip (Blade, Ratchet, Bit, RIB, Lock Chip, Over Blade, Main Blade, Assist Blade), since most kinds carry no battle type of their own. A ratchet-integrated bit counts as RIB, not Bit, matching the /parts filter rail. The line and brand gauges work the same as the Battle Tops tab, except a part mold used on more than one line counts toward each line it appears on.
Favorites
Tap the star on a battle top's showcase or a part's detail to mark it a favorite. Favorites are saved on this device. The Favorites toggle in the filter bar narrows the view to just your starred items, and it stacks with the other filters. It is available in your collection and on the Catalog and Parts pages, so starred items you do not own yet still show up there. Battle tops are starred whole; parts are starred by mold, so every colorway of that part counts as one favorite.
Battle tops bring their parts
When you add a battle top, its parts count toward your collection automatically. On the Parts tab each of those parts lists a row per colorway the top uses, labeled like 'From BX-01' with a count badge. Tap a row to open the part's details focused on that exact colorway.
Parts from a battle top follow that top. To change them, adjust or remove the top itself. Removing a top leaves any loose spares and parts shared with your other tops untouched.
In the grid, a part that comes from a top shows a read-only count with an Unbundle button instead of a stepper. Unbundle takes a copy of that top apart, turning its parts into loose parts you can edit on their own. If you own more than one of that top, the confirm has a stepper to choose how many to unbundle. Any copies you keep stay assembled, parts shared with your other tops stay put, and you confirm first. If more than one of your tops uses the part, you pick which top to unbundle.
Quantities and colorways
Loose parts are grouped by mold, with each colorway listed under it. A part added without a specific colorway shows under the default code for that mold.
Each colorway row has its own stepper (44 by 44) so you can track, say, two of one colorway and one of another. Counts cap at 99 per entry.
Where to find it
Reach your Collection from the Home quick access card, the Parts page header, or global search. Battle Tops and Parts sit on two tabs with live counts. Once a tab holds a few items, it gains a filter bar with search, sort, and filter chips (battle type, product line, and item kind on Battle Tops; part kind, line, and bit type on Parts). Each tab has its own Clear button: Clear tops removes your battle tops (and the parts that come from them), while Clear parts removes only the loose parts you added. Both ask you to confirm first.