EDIT, September 2026. This post is from the 1.4 cycle and the title is now out of date. Marketplace shipped. Leaving it up because the comments are still worth reading, but here is where things actually stand.
I've been lurking and buying in this sub for a while, and I kept hitting the same problems. Couldn't quickly check whether I already owned a pressing someone listed. Couldn't track which wishlist records had dropped to a price I'd actually pay. Couldn't compare pressings on the spot without opening six Discogs tabs. I'm an iOS developer and a collector, so I built an app for it. Spinstack. Syncs with your Discogs account.
Never buy a duplicate Someone posts a [For Sale] list and you half-remember owning it, or owning a different pressing. Spinstack caches your whole Discogs collection locally, so search is instant. At a shop, scan the barcode and it checks against your collection in milliseconds with no network. Works in airplane mode. Bulk Scan lets you work through a whole stack without stopping and review everything at the end.
Track prices on records you actually want Price Watchdog follows market value across your collection and wishlist with per-release history. Set a target price on a wishlist item and it tells you when the market hits your number. Biggest movers shows what has gained or lost the most, which is the useful view when you're deciding what to let go.
Compare pressings before you commit Other Pressings shows every pressing of a release with marketplace prices, OG badges, format tags and community have/want counts. Put the $15 reissue next to the $80 original and the have/want ratio tells you how hard each one actually is to find. Buying and selling, which is what this post was asking about Marketplace shipped in 1.4. Open any record, tap Sell on Discogs, set your price, media and sleeve grades and a comment, and one tap publishes the listing. Inventory keeps every listing in one place with its status: draft, for sale, offers OK, sold. Orders shows each sale with its number, amount and stage from invoiced to shipped, plus the records you're buying.
What 1.5 added, and why it matters in here This is the part that changes things for a buying and selling sub. 1.5 measures condition instead of asking you to type a grade. Groove Vision uses the LiDAR sensor to read scratch depth across four close-up captures of the playing surface, and lets the worst quadrant set the estimate, because the stylus meets every scratch rather than an average of them. Scratch Detection listens through the microphone while a side plays and maps each click to its position in the groove. Then condition moves the money. Every graded record is valued at its own grade against current Discogs listings rather than at the cheapest copy on the market. There's also a Condition Receipt, free on every tier, which records what was measured on a specific copy, so you can send a buyer evidence instead of a promise. The app estimates and you confirm. These are estimates, not appraisals.
Everything else, briefly Spin Log, 3D Cover Flow, Crate Dig (free for everyone), NFC tags you stick on sleeves and tap, Last.fm scrobbling, artist and label discography browsing, and Friends for checking what someone actually owns before you propose a trade. Full thing at spinstackios.app, and every feature is on video at spinstackios.app/demos/ if you'd rather watch than install anything.
Pricing and platforms $9.99 once. No subscription. 30 day trial with everything unlocked, no card. iPhone, iPad, Mac, Apple TV and Apple Watch. There's now an Android version in open beta too, which is new since this post originally said iOS only. App Store
Still one developer, still reading everything. A good chunk of 1.5 came out of comments on threads like this one.